Search: Author: L H. Madkour
THOMSON REUTERS Standard Scientific Research and Essays (SSRE) Table of Content: December Special Issue 2014; Volume 2 Issue 13
Loutfy H. Madkour and ElrobySK Correlation between corrosion inhibitive effect and quantum molecular structure of Schiff bases for iron in acidic and alkaline media Stand. Sci. Res. Essays 2014 2(13): 680-704 [Abstract] [Full TextPDF] (984 KB) Standard Scientific Research and Essays Vol. 2(13), pp. 680-704 December Special Issue 2014 (ISSN: 2310-7502) Copyright © 2014 Standard Research Journals http://standresjournals.org/journals/SSRE/Content/2014/december_special_issue.html http://standresjournals.org/journals/SSRE/Abstract/2014/december_special_issue/Madkour%20and%20Elroby.html
Review article
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Correlation between corrosion inhibitive effect and quantum molecular structure of Schiff bases for iron in acidic and alkaline media *1Loutfy H. Madkour and 2ElrobySK 1
Department of Chemistry, Faculty of Science and Arts, Baljarashi, Al-Baha University, P.O. Box1988 Al-Baha, Saudi Arabia Department of Chemistry, Faculty of Science, King Abdul-Aziz University, P.O. Box 80203 Jeddah 21589 Saudi Arabia
2
*Corresponding E-mail address:
[email protected], Tel. +966 541945518; Fax: +966 77247272
Accepted 14 December 2014
Abstract Quantum chemical calculations using the density functional theory (DFT) have been applied to the five kinds of polydentate Schiff base compounds (PSCs), act as inhibitors for iron in aerated 2.0 M HNO3 and 2.0 M NaOH media. The structural parameters, such as the frontier molecular orbital energy HOMO (highest occupied molecular orbital), LUMO (lowest unoccupied molecular orbital), energy gap ∆E (ELUMO - EHOMO), the charge distribution, the absolute electronegativity (χ), the fraction of electrons transfer (∆N) from inhibitors to iron, the dipole moment (µ), the global hardness (η) and the total energy (Etotal) were also calculated and correlated with their inhibition efficiencies (%IE). The inhibition effects of (PSCs) may be explained in terms of electronic properties. The results showed that the (%IE) of PSCs increased with the increase in EHOMO and decrease in ELUMO - EHOMO. The inhibitor molecules were first adsorbed on the iron surface and blocking the reaction sites available for corrosive attack; and the areas containing N and O atoms are most possible sites for bonding by donating electrons to the iron surface through interaction with π-electrons of the aromatic rings, and the azo methine group. Also, the adsorbed Schiff base molecules interact with iron ions in the corrosive media leading to neutral and cationic iron-Schiff base complexes. Adsorption process is spontaneous, exothermic and obeyed Temkin isotherm and regarded as physical as chemical mechanism. The polarization studied indicated that the inhibitors act as a mixed type inhibitor in HNO3; cause only inhibition of the cathode process in NaOH, and the magnitude of the displacement of the Tafel plot is proportional to its concentration. Models for the inhibition corrosion behaviour were developed based upon statistical analyses of the experimental data. Some thermodynamic and kinetic parameters (Kads, ∆Gads) were estimated. Both experimental and quantum theoretical calculations are in excellent agreement. The inhibition efficiency increase in the order of: PSC_1 > PSC_2 > PSC_3 > PSC_4>PSC_5. Thus, DFT study gave further insight into the mechanism of inhibition action of PSCs. This research might provide a theoretical inhibition performance evaluation approach for homologous inhibitors. Keywords: Corrosion inhibitor, Quantum chemical, DFT method, Schiff bases adsorption, Molecular orbital, Iron electrode, Temkin isotherm
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Loutfy H. Madkour and Zinhome UA Inhibition, kinetic and thermodynamic effects of new Azo derivatives on iron corrosion in acidic and alkaline solutions Stand. Sci. Res. Essays 2014 2(13): 705-724 [Abstract] [Full Text-PDF] (1.2 MB) http://standresjournals.org/journals/SSRE/Abstract/2014/december_special_issue/Madkour%20and%20Zinhome.html Review article
Inhibition, kinetic and thermodynamic effects of new Azo derivatives on iron corrosion in acidic and alkaline solutions *1Loutfy H. Madkour and 2Zinhome UA 1Chemistry
Department, Faculty of Science and Arts, Baljarashi, Al-Baha University, P.O. Box. (1988), Al-Baha, Kingdom of Saudi Arabia 2Chemistry
Department, Faculty of Science, Tanta University, 31527, Tanta, Egypt
*Corresponding author E-mail:
[email protected]; Tel. +966 541945518; Fax: +966 77247272
Accepted 14 December 2014
Abstract This investigation is designed to apply an advanced kinetic-thermodynamic model on the experimental data obtained from acidic and alkaline corrosion of iron using mono- and bis-azo dyes as corrosion inhibitors. The inhibition properties of the tested azo dyes on corrosion of iron in HNO3 and NaOH media were analyzed by gravimetric, thermometric and polarization measurements. The three studied methods gave consistent results. Polarization study showed that all the inhibitors are mixed type in acidic, act mainly as cathodic in alkaline solution. The synthesized azo dye derivatives exhibit good inhibition properties, obeys the Frumkin adsorption isotherm. The large values of the change in the standard free energy of adsorption (∆Goads), equilibrium constant (Kads) and binding constant (Kb) revealed that the reactions proceed spontaneously and result in highly efficient physisorption mechanism and stronger electrical interaction between the double layer existing at the phase boundary and the adsorbing molecules. The inhibition efficiency depends on the number of adsorption oxygen sites (OH and OMe groups), their charge density and π-electron clouds. The inhibition efficiency evaluated via theoretical methods was well accorded with reported experimental ones, following the same order as: naphthyl- ligand >-naphthyl>p-anisdine>p-toluidine >o-toluidine >m-toluidine derivative. This research might provide a theoretical inhibition performance evaluation approach for homologous inhibitors. Keywords: Corrosion, inhibitor, mono- and bis-azo dyes, iron, HNO3, NaOH
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Journal of Geochemistry Volume 2014 (2014), Article ID 451782, 10 pages http://dx.doi.org/10.1155/2014/451782 http://www.hindawi.com/journals/jg/2014/451782/
Research Article
Electro-Thermal and Semiconductivity Behaviour of Natural Sintered Complex Carbonate Ore for Thermo-Technological Applications Loutfy H. Madkour Chemistry Department, Faculty of Science and Arts, Baljarashi, Al-Baha University, P.O. Box 1988, AlBaha, Saudi Arabia Received 9 September 2013; Revised 8 December 2013; Accepted 6 January 2014; Published 5 March 2014 Academic Editor: Miguel A. Huerta-Diaz Copyright © 2014 Loutfy H. Madkour. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract The polymetal (Zn, Pb, Fe, Ca, Mg, Cd, Ba, Ni, Ti, and SiO2) complex Umm-Gheig carbonate ore is subjected to sintering treatment at 573, 773, 973 and 1273 K respectively for four hours. Chemical, spectral, X-ray and differential thermal analyses are applied for the native ore as well as for the samples preheated and sintered. The current versus applied DC voltage (I–V) characteristics, bulk density (Db), percent shrinkage (%S), activation energy (Ea) and energy gap (Eg) are established for the sintered ore. The electrical conductivity(σ), thermal conductivity (K) and thermoelectric power coefficient (α) have been investigated as a function of applied temperature for the sintered ore materials. The electrical conduction is mainly achieved by free electrons near or in conduction band or n-type. As the sintering temperature (Ts) increases the conduction of the ore is also increased due to the recombination process taking place between the electrons and holes. Electrons hopping between Fe2+ and Fe3+ are the main charge carriers. The formation of Fe3O4 at high sintering temperature acts as an active mineralizer, thus inducing an increased degree of crystallinity and a more ordered crystal structure is produced. http://www.hindawi.com/journals/jg/2014/451782/
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1 Thermodynamic behaviour of complex antimonite ore for electrodeposition of metal value ★★★★★ German National Library of Science and Technology (GetInfo) Madkour, L. H. BL OC 1997-01-01
2 Electrolytic separation of lead and its dioxide from carbonate ore residuum ★★★★★ German National Library of Science and Technology (GetInfo) Madkour, L. H. BL OC 1995-01-01
3 Electrolytic extraction of uranium from Egyptian phosphorites ★★★★★ German National Library of Science and Technology (GetInfo) Madkour, L. H. BL OC 1995-01-01
4 Electrolytic recovery of antimony from natural stibnite ore ★★★★★ 5
German National Library of Science and Technology (GetInfo) Madkour, L. H.; Salem, I. A. BL OC 1996-01-01
5 Synthesis and Characterization of 2,2'-Biimidazole Complexes of Oxocations of Molybdenum (VI, V) and Uranium(VI) ★★★★★ German National Library of Science and Technology (GetInfo) Kandil, S. S.; Madkour, L. H. BL OC 1993-01-01
6 Inhibition of the corrosion of 16/14 austenitic stainless steel by oxygen and nitrogen containing compounds ★★★★★ German National Library of Science and Technology (GetInfo) Madkour, L. H.; Ghoneim, M. M. BL OC 1997-01-01
7 Electrodeposition of lead and its dioxide from egyptial carbonate ore residuum ★★★★★ German National Library of Science and Technology (GetInfo) 6
Madkour, L. H.; Society for the Advancement of Electrochemical Science and Technology BL CP 1996-01-01
8 Inhibitory Effect of Some Carbazides on Corrosion of Aluminium in Hydrochloric Acid and Sodium Hydroxide Solutions ★★☆★★ German National Library of Science and Technology (GetInfo) Fouda, A. S.; Madkour, L. H.; Elasklany, A. H. BL OC 1995-01-01
9 Inhibition Effect of Hydantoin Compounds on the Corrosion of Iron in Nitric and Sulfuric Acid Solutions ★★☆★★ German National Library of Science and Technology (GetInfo) Madkour, L. H.; Hassanein, A. M.; Ghoneim, M. M. BL OC 2001-01-01
10 Corrosion Inhibitors for Zinc in 2 M HCl Solution ★★☆★★ German National Library of Science and Technology (GetInfo) Fouda, A. S.; Madkour, L. H.; El-Shafei, A. A. 7
BL OC 1995-01-01
11 Inhibition of the acid corrosion of iron with haloacetic acids ★★☆★★ German National Library of Science and Technology (GetInfo) El-Gaber, A. S.; Madkour, L. H.; El-Asklany, A. H. BL OC 1997-01-01
12 Inhibition of Copper Corrosion by Arylazotriazoles in Nitric Acid Solution ★★☆★★ German National Library of Science and Technology (GetInfo) Madkour, L. H.; Elmorsi, M. A.; Ghoneim, M. M. BL OC 1995-01-01
13 Thermo-physical studies on ilmenite ore for mass production of ceramic capacitors ★★☆★★ German National Library of Science and Technology (GetInfo) Madkour, L. H.; Abou-Sekkina, M. M.; Hemeda, O. M. BL OC 1996-01-01
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Professor Loutfy Hamid Madkour Professor of Physical Chemistry, Saudi Arabia ORCID
0000-0002-3101-8356
Personal Information
Biography Professor LOUTFY HAMID MADKOUR Scopus Author Identifier: 6701732721 Professor of Physical Chemistry, Saudi Arabia ORCID 0000-0002-3101-8356 Prof. LOUTFY HAMID MADKOUR Professor of Physical Chemistry and Electro analytical Chemistry. Scopus Author Identifier: 6701732721 E-mail:
[email protected] Mobile: 002/01008808079 (Egypt). Mobile: 00966/532598878 (Saudi Arabia). Prof. LOUTFY H. MADKOUR graduated as B. Sc. Chem. in 1972 at Cairo University and as M.Sc. Electrometallurgy at Menia University in 1979. In 1982 He obtained his Ph.D.in Physical and Electro analytical chemistry at Tanta University. Prof. Dr. MADKOUR, s special research interests are: Physical chemistry, Electrochemistry, Corrosion, Electrometallurgy, Electro analytical chemistry, Analytical chemistry, Polarography, Electrolytic extraction of heavy metals from natural ores and deposits, electrochemical thermodynamics, and Environmental chemistry. Prof. MADKOUR is serving in different positions in Egypt, Republic of Yemen, Kuwait and Kingdom of Saudi Arabia. Prof. LOUTFY. H. MADKOUR joined now again from 24 Oct. 2012 as Professor for Physical and Electro analytical Chemistry. at Chemistry Department, Faculty of Science and Arts, Baljarashi, Al-Baha University P.O. Box 1988, Al-Baha, Kingdom of Saudi Arabia (KSA) till now. Biography Updated on 16 March 2015 Scholarly. Contributions [Data Provided by Copyright © 2014 SAGE-Hindawi Access to Research. All rights reserved.
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Author profiles Name Madkour, Loutfy H.
Author ID 7003686193
Articles per profile: Madkour LH 9
Total Correct 172 172
Madkour, Loutfy H. (7003686193)
Doc ID
Aminic nitrogen- bearing polydentate Schiff base compounds as corrosion inhibitors for iron in acidic and alkaline media: A combined experimental and DFT studies Madkour, L.H. Elroby, S.K.
8489238966 y 9 (2014)
Electro-Thermal and Semiconductivity Behaviour of Natural Sintered Complex Carbonate Ore for Thermo-Technological Applications Loutfy H. Madkour Journal of Geochemistry Volume 2014 (2014), Article ID 451782, 10 pages http://dx.doi.org/10.1155/2014/451782 http://www.hindawi.com/journals/jg/2014/451782/ http://www.readcube.com/articles/10.1155/2014/451782
Kinetic-thermodynamic studies of substituted mono- and bis- azo dyes as corrosion inhibitors for iron in nitric acid and sodium hydroxide solutions Madkour, L.H. Zinhome, U.A.
Year
Correct
(2014)
8487035933 7
(2012)
y
Inhibition effect of Schiff base compounds on the corrosion of iron in nitric acid and sodium hydroxide solutions Madkour, L.H. Zinhome, U.A.
7995228917 (2010) 7
y
Inhibition effect of hydantoin compounds on the corrosion of iron in nitric and sulfuric acid solutions Madkour, L.H. Hassanein, A.M. Ghoneim, M.M. Eid, S.A.
5724911445 (2001) 4
y
Kinetics of substituted bis- and mono-azo dyes as corrosion inhibitors for aluminium in hydrochloric acid and sodium hydroxide solutions Madkour, L.H. Issa, R.M. El-Ghrabawy, I.M.
0032856958 (1999)
y
Electrochemical Behaviour of 3-Arylazo-1,2,4-triazole Compounds in Aqueous Buffered Solutions Madkour, L.H.
2542539216 (1998)
y
Thermodynamic behaviour of complex antimonite ore for electrodeposition of metal value Madkour, L.H.
0030901703 (1997)
y
Inhibition of the corrosion of 16/14 austenitic stainless steel by oxygen and nitrogen containing compounds Madkour, L.H. Ghoneim, M.M.
0004488922 (1997)
y
Inhibition of the acid corrosion of iron with haloacetic acids El-Gaber, A.S. Madkour, L.H. El-Asklany, A.H. Fouda, A.S.
0001955835 (1997)
y
10
Thermo-physical studies on ilmenite ore for mass production of ceramic capacitors 3342880695 (1996) Madkour, L.H. Abou-Sekkina, M.M. Hemeda, O.M.
y
0343885772 (1996)
y
0030283970 (1996)
y
Electrodeposition of lead and its dioxide from Egyptial carbonate ore residuum Madkour, L.H. Electrolytic recovery of antimony from natural stibnite ore Madkour, L.H. Salem, I.A. Inhibition of copper corrosion by arylazotriazoles in nitric acid solution Madkour, L.H. Elmorsi, M.A. Ghoneim, M.M.
2184450360 8
Electrolytic separation of lead and its dioxide from carbonate ore residiuum Madkour, L.H.
0029429109 (1995)
INHIBITORY EFFECT OF SOME CARBAZIDES ON CORROSION OF ALUMINUM IN HYDROCHLORIC-ACID AND SODIUM-HYDROXIDE SOLUTIONS By: FOUDA, AS; MADKOUR, LH; ELSHAFEI, AA; et al. MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK Volume: 26 Issue: 6 Pages: 342-346 Published: JUN (1995)
(1995)
CORROSION-INHIBITORS FOR ZINC IN 2M HCL SOLUTION By: FOUDA, AS; MADKOUR, LH; ELSHAFEI, AA; et al. BULLETIN OF THE KOREAN CHEMICAL SOCIETY Volume: 16 Issue: 5 Pages: 454-458 Published: MAY 20 (1995)
(1995)
SYNTHESIS AND CHARACTERIZATION OF 2,2'-BIIMIDAZOLE COMPLEXES OF OXOCATIONS OF MOLYBDENUM (VI, V) AND URANIUM(VI) By: KANDIL, SS; MADKOUR, LH SPECTROSCOPY LETTERS Volume: 26 Issue: 3 Pages: 535-550 Published: (1993)
y
(1995
y
(1993)
y HYDRO- AND ELECTROMETALLURGY TREATMENT OF CASSITERITES (greater than S%NO//2 CONCENTRATE). Madkour, L.H. 0024011748 (1988)
11
THE INHIBITION OF THE DISSOLUTION OF ALUMINUM IN HYDROCHLORIC-ACID BY SOME BIACETYLMONOXIME HYDRAZONES By: FOUDA, AEE; ELASKLANY, AE; MADKOUR, LH; et al. ACTA CHIMICA HUNGARICA-MODELS IN CHEMISTRY Volume: 124 Issue: 3 Pages: 377-385 Published: MAY-JUN (1987)
ELECTROREDUCTION OF 4-ARYLHYDRAZONO-1PHENYLPYRAZOLIDIN-3,5-DIONES IN 20-PERCENT ETHANOLIC BR BUFFERS AT MERCURY-ELECTRODE By: ISSA, RM; GHONEIM, MM; ELMORSI, M; MADKOUR, LH JOURNAL OF THE ELECTROCHEMICAL SOCIETY Volume: 134 Issue: 3 Pages: C140-C140 Published: MAR (1987)
CRITICAL MICELLE CONCENTRATIONS OF HEXADECYLTRIMETHYLAMONIUM CHLORIDE IN WATER OVER THE TEMPERATURE-RANGE 25 TO 160-DEGREES-C By: FOUDA, AA; MADKOUR, LH; EVANS, DF INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIOINORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY Volume: 25 Issue: 12 Pages: 1102-1104 Published: DEC (1986)
(1987)
(1987)
(1986)
INHIBITIVE ACTION OF SOME AMINES AND HYDRAZINES TOWARDS CORROSION OF ZINC IN TRICHLOROACETIC-ACID SOLUTION By: FOUDA, AS; MADKOUR, LH BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 5 Pages: 745749 Published: SEP-OCT (1986)
(1986)
ELECTRODEPOSITION OF TIN FROM TINSTONE ORE By: FOUDA, AS; MADKOUR, LH; KHALIFA, ME BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 4 Pages: 504506 Published: JUL-AUG (1986)
(1986)
CORRELATION BETWEEN EFFECTIVENESS OF ALIPHATIC-AMINES AS CORROSION-INHIBITORS AND ELECTRON-DENSITY CALCULATIONS By: FOUDA, AS; MADKOUR, LH; SOLIMAN, MS BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 3 Pages: 358360 Published: MAY-JUN (1986) 12
(1986)
THERMODYNAMIC STUDIES ON SULPHATE ROASTING FOR ZINC ELECTROWINNING FROM CARBONATE ORE. Madkour, Loutfy H.
y 0022721274 (1986)
HYDROMETALLURGICAL AND ELECTROMETALLURGICAL TREATMENT OF CASSITERITE CONCENTRATE. Madkour, Loutfy H.
0022704469 (1986)
y
Electrodeposition of titanium and its dioxide from ilmenite Madkour, L.H. Fouda, A.S.
0022662445 (1986)
y
0022050490 (1985)
y
0021820751 (1985)
y
ELECTROCHEMICAL REDUCTION OF SOME ARYLIDENE DERIVATIVES OF SALICYLIC, OXALIC, SUCCINIC AND METHYL ( 2-HYDROXY PHENIDENE )- BENZOIC HYDRAZIDES IN NONAQUEOUS MEDIUM AT A 0021793615 (1985) MERCURY CATHODE. Ghoneim, M.M. Issa, R.M. Madkour, L.H.
y
RECOMMENDED FLOWSHEETS FOR THE ELECTROLYTIC EXTRACTION OF LEAD AND ZINC FROM RED SEA POLYMETAL ORE. Madkour, Loutfy H. POLAROGRAPHIC REDUCTION OF SOME ARYLIDENE DERIVATIVES OF OXALIC HYDRAZIDE IN BUFFER SOLUTIONS OF VARYING pH. Issa, R.M. Ghoneim, M.M. El-Baradie, H.Y.F. Madkour, L.H.
THE EFFECT OF SOME BETA-DIKETO COMPOUNDS ON THE CORROSION OF ZINC IN HYDROCHLORIC-ACID SOLUTION By: FOUDA, AS; ELASKLANY, AH; MADKOUR, LH (1984) JOURNAL OF THE INDIAN CHEMICAL SOCIETY Volume: 61 Issue: 5 Pages: 425-429 Published: (1984)
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1.
Inhibition effect of hydantoin compounds on the corrosion of iron in nitric and sulfuric acid solutions By: Madkour, LH; Hassanein, AM; Ghoneim, MM; et al. MONATSHEFTE FUR CHEMIE Volume: 132 Issue: 2 Pages: 245-258 Published: FEB 2001 Full Text from Publisher View Abstract Times Cited: 3 (from All Databases)
2.
Kinetics of substituted bis- and mono-azo dyes as corrosion inhibitors for aluminium in hydrochloric acid and sodium hydroxide solutions By: Madkour, LH; Issa, RM; El-Ghrabawy, IM JOURNAL OF CHEMICAL RESEARCH-S Issue: 7 Pages: 408-409A Published: JUL 1999 Full Text from Publisher View Abstract Times Cited: 10 (from All Databases)
3.
Electrochemical behaviour of 3-Arylazo-1,2,4-triazole compounds in aqueous buffered solutions By: Madkour, LH JOURNAL OF CHEMICAL RESEARCH-S Issue: 9 Pages: 514-515 Published: SEP 1998 Full Text from Publisher View Abstract Times Cited: 2 (from All Databases)
4.
Thermodynamic behaviour of complex antimonite ore for electrodeposition of metal value By: Madkour, LH JOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE Volume: 94 Issue: 3 Pages: 620634 Published: MAR 1997 View Abstract Times Cited: 3 (from All Databases)
5.
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Inhibition of the acid corrosion of iron with haloacetic acids By: ElGaber, AS; Madkour, LH; ElAsklany, AH; et al. BULLETIN OF ELECTROCHEMISTRY Volume: 13 Issue: 2 Pages: 62-66 Published: FEB 1997 View Abstract Times Cited: 2 (from All Databases)
6.
Inhibition of the corrosion of 16/14 austenitic stainless steel by oxygen and nitrogen containing compounds By: Madkour, LH; Ghoneim, MM BULLETIN OF ELECTROCHEMISTRY Volume: 13 Issue: 1 Pages: 1-7 Published: JAN 1997 View Abstract Times Cited: 10 (from All Databases)
7.
Electrolytic recovery of antimony from natural stibnite ore By: Madkour, LH; Salem, IA HYDROMETALLURGY Volume: 43 Issue: 1-3 Pages: 265-275 Published: NOV 1996 Full Text from Publisher View Abstract Times Cited: 9 (from All Databases)
8.
Electrodeposition of lead and its dioxide from Egyptial carbonate ore residuum By: Madkour, LH Conference: 5th International Symposium on Advances in Electrochemical Science and Technology Location: MADRAS, INDIA Date: NOV 24-26, 1994 BULLETIN OF ELECTROCHEMISTRY Volume: 12 Issue: 3-4 Pages: 234-236 Published: MAR-APR 1996 View Abstract Times Cited: 1 (from All Databases)
9.
ELECTROLYTIC SEPARATION OF LEAD AND ITS DIOXIDE FROM CARBONATE ORE RESIDIUUM By: MADKOUR, LH INDIAN JOURNAL OF CHEMICAL TECHNOLOGY Volume: 2 Issue: 6 Pages: 343-344 Published: NOV 1995 View Abstract Times Cited: 2 (from All Databases)
10.
INHIBITION OF COPPER CORROSION BY ARYLAZOTRIAZOLES IN NITRIC-ACID SOLUTION By: MADKOUR, LH; ELMORSI, MA; GHONEIM, MM MONATSHEFTE FUR CHEMIE Volume: 126 Issue: 10 Pages: 1087-1095 Published: OCT 1995 11.
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INHIBITORY EFFECT OF SOME CARBAZIDES ON CORROSION OF ALUMINUM IN HYDROCHLORICACID AND SODIUM-HYDROXIDE SOLUTIONS By: FOUDA, AS; MADKOUR, LH; ELSHAFEI, AA; et al. MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK Volume: 26 Issue: 6 Pages: 342-346 Published: JUN 1995 Full Text from Publisher View Abstract Times Cited: 6 (from All Databases)
12.
CORROSION-INHIBITORS FOR ZINC IN 2M HCL SOLUTION By: FOUDA, AS; MADKOUR, LH; ELSHAFEI, AA; et al. BULLETIN OF THE KOREAN CHEMICAL SOCIETY Volume: 16 Issue: 5 Pages: 454-458 Published: MAY 20 1995 12 View Abstract Times Cited: 16 (from All Databases)
13.
SYNTHESIS AND CHARACTERIZATION OF 2,2'-BIIMIDAZOLE COMPLEXES OF OXOCATIONS OF MOLYBDENUM (VI, V) AND URANIUM(VI) By: KANDIL, SS; MADKOUR, LH SPECTROSCOPY LETTERS Volume: 26 Issue: 3 Pages: 535-550 Published: 1993 Full Text from Publisher View Abstract Times Cited: 4 (from All Databases)
14.
THE INHIBITION OF THE DISSOLUTION OF ALUMINUM IN HYDROCHLORIC-ACID BY SOME BIACETYLMONOXIME HYDRAZONES By: FOUDA, AEE; ELASKLANY, AE; MADKOUR, LH; et al. ACTA CHIMICA HUNGARICA-MODELS IN CHEMISTRY Volume: 124 Issue: 3 Pages: 377-385 Published: MAYJUN 1987 Times Cited: 2 (from All Databases)
15.
ELECTRODEPOSITION OF INDIUM By: FOUDA, AS; MADKOUR, LH; AHMED, AI BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 2 Pages: 270-272 Published: MAR-APR 1987 Times Cited: 1 (from All Databases)
16.
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ELECTROREDUCTION OF 4-ARYLHYDRAZONO-1-PHENYLPYRAZOLIDIN-3,5-DIONES IN 20-PERCENT ETHANOLIC BR BUFFERS AT MERCURY-ELECTRODE By: ISSA, RM; GHONEIM, MM; ELMORSI, M; et al. JOURNAL OF THE ELECTROCHEMICAL SOCIETY Volume: 134 Issue: 3 Pages: C140-C140 Published: MAR 1987 Times Cited: 0 (from All Databases)
17.
CRITICAL MICELLE CONCENTRATIONS OF HEXADECYLTRIMETHYLAMONIUM CHLORIDE IN WATER OVER THE TEMPERATURE-RANGE 25 TO 160-DEGREES-C By: FOUDA, AA; MADKOUR, LH; EVANS, DF INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY Volume: 25 Issue: 12 Pages: 1102-1104 Published: DEC 1986 Times Cited: 5 (from All Databases)
18.
INHIBITIVE ACTION OF SOME AMINES AND HYDRAZINES TOWARDS CORROSION OF ZINC IN TRICHLOROACETIC-ACID SOLUTION By: FOUDA, AS; MADKOUR, LH BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 5 Pages: 745-749 Published: SEP-OCT 1986 Times Cited: 2 (from All Databases)
19.
ELECTRODEPOSITION OF TIN FROM TINSTONE ORE By: FOUDA, AS; MADKOUR, LH; KHALIFA, ME BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 4 Pages: 504-506 Published: JUL-AUG 1986 Times Cited: 0 (from All Databases)
20.
CORRELATION BETWEEN EFFECTIVENESS OF ALIPHATIC-AMINES AS CORROSION-INHIBITORS AND ELECTRON-DENSITY CALCULATIONS By: FOUDA, AS; MADKOUR, LH; SOLIMAN, MS BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 3 Pages: 358-360 Published: MAY-JUN 1986 21.
THERMODYNAMIC STUDIES ON SULFATE ROASTING FOR ZINC ELECTROWINNING FROM CARBONATE ORE By: MADKOUR, LH JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY Volume: 36 Issue: 5 Pages: 197-211 Published: MAY 1986 Full Text from Publisher Times Cited: 0 (from All Databases)
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ELECTRODEPOSITION OF TITANIUM AND ITS DIOXIDE FROM ILMENITE By: MADKOUR, LH; FOUDA, AS JOURNAL OF ELECTROANALYTICAL CHEMISTRY Volume: 199 Issue: 1 Pages: 207-210 Published: FEB 25 1986 Full Text from Publisher Times Cited: 3 (from All Databases)
23.
RECOMMENDED FLOWSHEETS FOR THE ELECTROLYTIC EXTRACTION OF LEAD AND ZINC FROM RED-SEA POLYMETAL ORE By: MADKOUR, LH JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY A-CHEMICAL TECHNOLOGY Volume: 35 Issue: 3 Pages: 108-114 Published: 1985 Full Text from Publisher Times Cited: 5 (from All Databases)
24.
THE EFFECT OF SOME BETA-DIKETO COMPOUNDS ON THE CORROSION OF ZINC IN HYDROCHLORIC-ACID SOLUTION By: FOUDA, AS; ELASKLANY, AH; MADKOUR, LH JOURNAL OF THE INDIAN CHEMICAL SOCIETY Volume: 61 Issue: 5 Pages: 425-429 Published: 1984 Times Cited: 5 (from All Databases
Inhibition effect of hydantoin compounds on the corrosion of iron in nitric and sulfuric acid solutions By:Madkour, LH (Madkour, LH); Hassanein, AM (Hassanein, AM); Ghoneim, MM (Ghoneim, MM); Eid, SA (Eid, SA) MONATSHEFTE FUR CHEMIE Volume: 132 Issue: 2 Pages: 245-258 DOI: 10.1007/s007060170134 Published: FEB 2001 View Journal Information JCR® Category
Quartile in Category
18
CHEMISTRY, MULTIDISCIPLINARY
Q3
Abstract The inhibition of corrosion of iron in 2M nitric acid and 2M sulfuric acid solutions by substituted phenylhydantoin, thiohydantoin, and dithiohydantoin compounds was measured using thermometric, weight loss, and polarization methods. The three methods gave consistent results. The polarization curves indicated that the hydantoin compounds act as mixedtype inhibitors. The adsorption of the inhibitors were found to obey the Temkin adsorption isotherm. The higher inhibition efficiency of the additives in nitric with respect to sulfuric acid solution may be attributed to the reduced formation of soluble quaternary nitrogen salts in nitric acid medium, favouring adsorption of the parent additive on the metal surface. The obtained results indicate that the corrosion rate of iron in both acids increases with increasing temperature, both in absence and presence of the tested inhibitors. Kinetic-thermodynamic model functions and Temkin isotherm data an compared and discussed. The synergistic effect of halide anions on the inhibition efficiency of the hydantoin compounds was also investigated.
Keywords Author Keywords:acid corrosion; inhibition; iron; hydantoins; synergistic effect KeyWords Plus:HALIDE-IONS; DISSOLUTION; STEEL
Author Information Reprint Address: Ghoneim, MM (reprint author) Tanta Univ, Fac Sci, Dept Chem, Tanta 31527, Egypt. Addresses: [ 1 ] Tanta Univ, Fac Sci, Dept Chem, Tanta 31527, Egypt
Publisher SPRINGER-VERLAG WIEN, SACHSENPLATZ 4-6, PO BOX 89, A-1201 VIENNA, AUSTRIA
Categories / Classification Research Areas:Chemistry Web of Science Categories:Chemistry, Multidisciplinary
Document Information Document Type:Article Language:English Accession Number: WOS:000167593400005 ISSN: 0026-9247
Journal Information
Table of Contents: Current Contents Connect®
Impact Factor: Journal Citation Reports®
19
Other Information IDS Number: 413CY Cited References in Web of Science Core Collection: 31 Times Cited in Web of Science Core Collection: 3
Kinetics of substituted bis- and mono-azo dyes as corrosion inhibitors for aluminium in hydrochloric acid and sodium hydroxide solutions By:Madkour, LH (Madkour, LH); Issa, RM (Issa, RM); El-Ghrabawy, IM (El-Ghrabawy, IM) JOURNAL OF CHEMICAL RESEARCH-S Issue: 7 Pages: 408-409A DOI: 10.1039/a805608k Published: JUL 1999
Abstract This investigation is designed to apply an advanced kinetic-thermodynamic model on the data obtained from acidic and alkaline corrosion of aluminium using bis- and mono-ate dyes as corrosion inhibitors.
Keywords KeyWords Plus:NITROGEN-CONTAINING COMPOUNDS; ELECTROCHEMICAL-BEHAVIOR; CHLORIDE SOLUTION; ALLOYS; ADSORPTION; STEEL; DERIVATIVES; DISSOLUTION; EFFICIENCY; COPPER
Author Information Reprint Address: Madkour, LH (reprint author) Tanta Univ, Fac Sci, Dept Chem, Tanta 31527, Egypt. Addresses: [ 1 ] Tanta Univ, Fac Sci, Dept Chem, Tanta 31527, Egypt
Publisher SCIENCE REVIEWS LTD, 40 THE FAIRWAY, NORTHWOOD HA6 3DY, MIDDX, ENGLAND
Categories / Classification Research Areas:Chemistry Web of Science Categories:Chemistry, Multidisciplinary
Document Information Document Type:Article Language:English Accession Number: WOS:000082122500002
20
ISSN: 0308-2342
Journal Information
Table of Contents: Current Contents Connect®
Other Information IDS Number: 228DU Cited References in Web of Science Core Collection: 45 Times Cited in Web of Science Core Collection: 10
Electrochemical behaviour of 3-Arylazo-1,2,4-triazole compounds in aqueous buffered solutions By:Madkour, LH (Madkour, LH) JOURNAL OF CHEMICAL RESEARCH-S Issue: 9 Pages: 514-515 DOI: 10.1039/a800519b Published: SEP 1998
Abstract A variety of electroanalytical methods, e.g. DC polarography, cyclic voltammetry and controlled potential coulometry have been employed upon 3-arylazo-1,2,4-triazole derivatives, AAT; substituents affect the reduction potentials but do not alter the reduction pattern.
Author Information Reprint Address: Madkour, LH (reprint author) Tanta Univ, Fac Sci, Dept Chem, Tanta 31527, Egypt. Addresses: [ 1 ] Tanta Univ, Fac Sci, Dept Chem, Tanta 31527, Egypt
Publisher ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD,, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Categories / Classification Research Areas:Chemistry Web of Science Categories:Chemistry, Multidisciplinary
Document Information 21
Document Type:Article Language:English Accession Number: WOS:000077722900016 ISSN: 0308-2342
Journal Information
Table of Contents: Current Contents Connect®
Other Information IDS Number: 151MB Cited References in Web of Science Core Collection: 32 Times Cited in Web of Science Core Collection: 2
Thermodynamic behaviour of complex antimonite ore for electrodeposition of metal value By:Madkour, LH (Madkour, LH) JOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE Volume: 94 Issue: 3 Pages: 620-634 Published: MAR 1997
Abstract This paper outlines the hydrometallurgical processing and the various possible approaches for the recovery of metallic antimony from its antimonite sulphide ore by electrolysis. Thermodynamic calculations have been made to find the optimum conditions for roasting and/or sulphate roasting of Wadi Abu Quraiya antimonite ore. The antimonite ore (Sb2S3) is roasted directly without concentration and large savings in reagent and chemical processes are expected. A suitable roasting temperature of 1200 K for 4 hours has been determined. Metallic antimony is' cathodically electrodeposited with a high current efficiency at current densities of 350 to 500 A/m(2) depending on the composition of leach liquor solutions. The results of the electron microscopy investigation confirmed by metal value data in the ASTM cards are in good agreement with the chemical analysis.
Keywords Author Keywords:antimony sulphide ore; roasting; hydrometallurgical treatment; antimony deposition
Author Information Reprint Address: Madkour, LH (reprint author) TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT.
22
Publisher EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 141 RUE JAVEL, 75747 PARIS, FRANCE
Categories / Classification Research Areas:Biochemistry & Molecular Biology; Chemistry Web of Science Categories:Biochemistry & Molecular Biology; Chemistry, Physical
Document Information Document Type:Article Language:English Accession Number: WOS:A1997WW09200012 ISSN: 0021-7689
Other Information IDS Number: WW092 Cited References in Web of Science Core Collection: 27 Times Cited in Web of Science Core Collection: 3
Inhibition of the acid corrosion of iron with haloacetic acids By:ElGaber, AS (ElGaber, AS); Madkour, LH (Madkour, LH); ElAsklany, AH (ElAsklany, AH); Fouda, AS (Fouda, AS) BULLETIN OF ELECTROCHEMISTRY Volume: 13 Issue: 2 Pages: 62-66 Published: FEB 1997
Abstract The efficiency of chloro, dichloro, trichloro, bromo, and iodoacetic acids as inhibitors for acid corrosion of in-on was studied using polarization technique. A significant retardation of the corrosion rate Is observed in the inhibited HNO3 solution. The rate of corrosion depends on the nature of the inhibitor and its concentration and on the temperature of the system. It was found that iodoacetic acid has a significant inhibiting effect on the corrosion of the metal and protection efficiencies approaching 91% were measured. The inhibitor shifts the free corrosion potential in the cathodic direction and polarizes both the cathodic and anodic half reactions. It was found that the compounds under consideration are chemisorbed on the iron sun-face according to the Frumkin isotherm. The Tafel slope is approximately constant and independent of the concentration of the inhibitor, The thermodynamic parameters of adsorption obtained reveal a strong interaction of these inhibitors on the iron surface.
23
Keywords Author Keywords:corrosion; inhibition and haloacetic acids
Author Information Addresses: [ 1 ] QUAID I AZAM UNIV,FAC SCI,DEPT CHEM,DOHA,QATAR [ 2 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT [ 3 ] EL MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT
Publisher CENTRAL ELECTROCHEM RES INST, ATTN: DIRECTOR, KARAIKKUDI 623 006, INDIA
Categories / Classification Research Areas:Electrochemistry Web of Science Categories:Electrochemistry
Document Information Document Type:Article Language:English Accession Number: WOS:A1997WN20900003 ISSN: 0256-1654
Other Information IDS Number: WN209 Cited References in Web of Science Core Collection: 20 Times Cited in Web of Science Core Collection: 2
Inhibition of the corrosion of 16/14 austenitic stainless steel by oxygen and nitrogen containing compounds By:Madkour, LH (Madkour, LH); Ghoneim, MM (Ghoneim, MM) BULLETIN OF ELECTROCHEMISTRY Volume: 13 Issue: 1 Pages: 1-7 Published: JAN 1997
Abstract Corrosion inhibition by methoionine (MET), citrulline (CIT), alanine (AL), glycine (GLY) and hydroxyproline (HPR) with respect to the dissolution of tungsten stainless steels in hydrochloric acid solution was studied using potentiodynamic,
24
Tafel extrapolation and polarization resistance methods. Polarization curves indicated that the primary passivation potential (Epp) and the transpassive region shift towards more positive potentials in presence of the studied amino acids, i.e. there is more passivation at wide potential range in the presence of amino acid inhibitors. The corrosion parameters are dependent on the percentage of tungsten in the alloy composition as well as the nature of the tested amino acids. The intermetallic compound Fe3W2 may form a galvanic cell with the matrix around the Fe3W2 phase within the matrix that is formed as a dispersed phase.
Keywords Author Keywords:amino acids; inhibition; tungsten stainless steel KeyWords Plus:HYDROCHLORIC-ACID SOLUTION; NITRIC-ACID; COPPER
Author Information Addresses: [ 1 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT
Publisher CENTRAL ELECTROCHEM RES INST, ATTN: DIRECTOR, KARAIKKUDI 623 006, INDIA
Categories / Classification Research Areas:Electrochemistry Web of Science Categories:Electrochemistry
Document Information Document Type:Article Language:English Accession Number: WOS:A1997WN20600001 ISSN: 0256-1654
Other Information IDS Number: WN206 Cited References in Web of Science Core Collection: 16 Times Cited in Web of Science Core Collection: 10
Electrolytic recovery of antimony from natural stibnite ore By:Madkour, LH (Madkour, LH); Salem, IA (Salem, IA) HYDROMETALLURGY Volume: 43 Issue: 1-3 Pages: 265-275
25
DOI: 10.1016/0304-386X(95)00113-U Published: NOV 1996 View Journal Information JCR® Category
Quartile in Category
METALLURGY & METALLURGICAL ENGINEERING
Q1
Abstract Stibnite ore at Wadi Abu Quraiya, situated in the central Eastern Desert of Egypt has been subjected to petrographical, mineralogical, infrared, X-ray diffraction, chemical and spectral analyses. Hydrometallurgical treatment based on leaching with acids, precipitation and electrodeposition of metal values from the ore have been developed. Studies to investigate suitable electrolytic baths for the cathodic deposition of metallic antimony either directly from the leach liquor or in the presence of complexing agents have been carried out, The influence of various factors on the electrodeposition process of the element from its electrolyte solutions is discussed, Advantages of the flowsheet and various approaches depending on convenient electrolytes for the deposition of antimony from the stibnite ore have been investigated. The results of spectrophotometric and chemical analyses revealed that the purity of the metal is > 99%.
Keywords Author Keywords:stibnite; leaching; antimony extraction
Author Information Reprint Address: Madkour, LH (reprint author) TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT. Addresses: [ 1 ] TANTA UNIV,FAC SCI,DEPT GEOL,TANTA,EGYPT
Publisher ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Categories / Classification Research Areas:Metallurgy & Metallurgical Engineering Web of Science Categories:Metallurgy & Metallurgical Engineering
Document Information Document Type:Article Language:English Accession Number: WOS:A1996VM89200020 ISSN: 0304-386X
Journal Information
Impact Factor: Journal Citation Reports®
26
Other Information IDS Number: VM892 Cited References in Web of Science Core Collection: 25 Times Cited in Web of Science Core Collection: 9
Electrodeposition of lead and its dioxide from Egyptial carbonate ore residuum By:Madkour, LH (Madkour, LH) BULLETIN OF ELECTROCHEMISTRY Volume: 12 Issue: 3-4 Pages: 234-236 Published: MAR-APR 1996
Conference Conference: 5th International Symposium on Advances in Electrochemical Science and Technology Location: MADRAS, INDIA Date: NOV 24-26, 1994
Abstract Acid-leach residue resulting from the sulphate roasting of Zn-Pb Egyptial carbonate ore is used for the production of lead, after hydrometallurgical treatments. Studies to investigate various baths for the deposition of lead and lead dioxide have been carried out. The results showed a wide variety of electrolysis, either soluble simple salts, or those containing complex anions and in virtually all cases, very high current efficiencies are obtained. The effects of various factors on the electrodeposition of Pb and PbO2 are discussed. Tn commercial practice, the properties and service requirements dictate the precise electrolyte that should be used since the properties of electrodeposited lead vary with the baths, Mechanism of the electrolytic production of the element and its dioxide is discussed. The results spectrophotometric and chemical analyses revealed that the purity of the metal is > 99%.
Keywords Author Keywords:carbonate ore residuum; hydrometallurgical treatments; lead extraction
Author Information Addresses: [ 1 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT
Publisher CENTRAL ELECTROCHEM RES INST, ATTN: DIRECTOR, KARAIKKUDI 623 006, INDIA
Categories / Classification 27
Research Areas:Electrochemistry Web of Science Categories:Electrochemistry
Document Information Document Type:Article; Proceedings Paper Language:English Accession Number: WOS:A1996UT92200026 ISSN: 0256-1654
Other Information IDS Number: UT922 Cited References in Web of Science Core Collection: 19 Times Cited in Web of Science Core Collection: 0
ELECTROLYTIC SEPARATION OF LEAD AND ITS DIOXIDE FROM CARBONATE ORE RESIDIUUM By:MADKOUR, LH (MADKOUR, LH) INDIAN JOURNAL OF CHEMICAL TECHNOLOGY Volume: 2 Issue: 6 Pages: 343-344 Published: NOV 1995 View Journal Information JCR® Category
Quartile in Category
CHEMISTRY, APPLIED
Q4
ENGINEERING, CHEMICAL
Q4
Abstract Electrowinning work is carried out on the roasted Eastern Desert complex carbonate ore residuum. Lead and its dioxide are electrodeposited from various electrolyte ore baths and the results showed a wide variety of ore electrolyte solutions, either in the form of soluble simple ore salts, or those containing complex ore anions. The optimum conditions and the efficiency of the electrolytic extraction are determined experimentally on the ore leach solutions.
Author Information Reprint Address: MADKOUR, LH (reprint author) TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT.
Publisher 28
COUNCIL SCIENTIFIC INDUSTRIAL RESEARCH, PUBL & INFO DIRECTORATE, NEW DELHI 110012, INDIA
Categories / Classification Research Areas:Chemistry; Engineering Web of Science Categories:Chemistry, Applied; Engineering, Chemical
Document Information Document Type:Note Language:English Accession Number: WOS:A1995RY88900012 ISSN: 0971-457X
Journal Information
Impact Factor: Journal Citation Reports®
Other Information IDS Number: RY889 Cited References in Web of Science Core Collection: 0 Times Cited in Web of Science Core Collection: 2
INHIBITION OF COPPER CORROSION BY ARYLAZOTRIAZOLES IN NITRICACID SOLUTION By:MADKOUR, LH (MADKOUR, LH); ELMORSI, MA (ELMORSI, MA); GHONEIM, MM (GHONEIM, MM) MONATSHEFTE FUR CHEMIE Volume: 126 Issue: 10 Pages: 1087-1095 DOI: 10.1007/BF00811379 Published: OCT 1995 View Journal Information JCR® Category
Quartile in Category
CHEMISTRY, MULTIDISCIPLINARY
Q3
Abstract A study has been made to investigate the effect of some azoheterocyclic dyes of the type 3-arylazo 1,2,4-triazole (AT) on the corrosion of copper exposed to 0.5 M nitric acid solution at different temperatures and at different AT concentrations. Using potentiodynamic polarization and Tafel electrochemical methods, it can be shown that AT compounds are good inhibitors of copper corrosion in HNO3 solution. The kinetic and thermodynamic parameters of the inhibited system were
29
determined. The high inhibition efficiency of these compounds may be due to the adsorption of the additive itself and/or the adsorption of the formed Cu(II)-AT complexes at the polarized electrode interface. Cathodic polarization measurements showed that AT dyes are predominantly cationic inhibitors.
Keywords Author Keywords:ACID MEDIUM; ARYLAZOTRIAZOLES; INHIBITION; COPPER KeyWords Plus:BENZOTRIAZOLE; ALLOYS; CU
Author Information Reprint Address: MADKOUR, LH (reprint author) TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT.
Publisher SPRINGER-VERLAG WIEN, SACHSENPLATZ 4-6, PO BOX 89, A-1201 VIENNA, AUSTRIA
Categories / Classification Research Areas:Chemistry Web of Science Categories:Chemistry, Multidisciplinary
Document Information Document Type:Article Language:English Accession Number: WOS:A1995RZ65400005 ISSN: 0026-9247
Journal Information
Impact Factor: Journal Citation Reports®
Other Information IDS Number: RZ654 Cited References in Web of Science Core Collection: 14 Times Cited in Web of Science Core Collection: 13
INHIBITORY EFFECT OF SOME CARBAZIDES ON CORROSION OF ALUMINUM IN HYDROCHLORIC-ACID AND SODIUM-HYDROXIDE SOLUTIONS By:FOUDA, AS (FOUDA, AS); MADKOUR, LH (MADKOUR, LH); ELSHAFEI, AA (ELSHAFEI, AA); ELASKLANY, AH (ELASKLANY, AH) MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK
30
Volume: 26 Issue: 6 Pages: 342-346 DOI: 10.1002/mawe.19950260612 Published: JUN 1995 View Journal Information JCR® Category
Quartile in Category
MATERIALS SCIENCE, MULTIDISCIPLINARY
Q4
Abstract The dissolution of aluminium in hydrochloric acid and sodium hydroxide solutions in the presence of semicarbazide, thiosemicarbazide and sym.diphenylcarbazide as corrosion inhibitors has been studied using thermometric, weight-loss and polarization methods. The three methods gave consistent results. The higher inhibition efficiency of these compounds in acidic than in alkaline madia may be due to the less negative potential of aluminium in hydrochloric acid solution, favouring adsorption of the additive. The adsorption of these compounds were found to obey Frumkin adsorption isotherm. Cathodic polarization measurements showed that these compounds are cathodic inhibitors and their adsorption in the double layer does not change the mechanism of the hydrogen evolution reaction. The results are analysed in terms of both molecular and cationic adsorption.
Keywords KeyWords Plus:DERIVATIVES; DISSOLUTION
Author Information Reprint Address: FOUDA, AS (reprint author) EL MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT. Addresses: [ 1 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT
Publisher VCH PUBLISHERS INC, 303 NW 12TH AVE, DEERFIELD BEACH, FL 33442-1788
Categories / Classification Research Areas:Materials Science Web of Science Categories:Materials Science, Multidisciplinary
Document Information Document Type:Article Language:English
31
Accession Number: WOS:A1995RF41700009 ISSN: 0933-5137
Journal Information
Impact Factor: Journal Citation Reports®
Other Information IDS Number: RF417 Cited References in Web of Science Core Collection: 12 Times Cited in Web of Science Core Collection: 6
CORROSION-INHIBITORS FOR ZINC IN 2M HCL SOLUTION By:FOUDA, AS (FOUDA, AS); MADKOUR, LH (MADKOUR, LH); ELSHAFEI, AA (ELSHAFEI, AA); ELMAKSOUD, SAA (ELMAKSOUD, SAA) BULLETIN OF THE KOREAN CHEMICAL SOCIETY Volume: 16 Issue: 5 Pages: 454-458 Published: MAY 20 1995
Abstract Inhibiting action of semicarbazide, thiosemicarbazide, sym. diphenylcarbazide towards corrosion of zinc in hydrochloric acid has been investigated. The rate of corrosion depends on the nature of the inhibitor and its concentration. The values of inhibition efficiency from, weight loss, thermometric measurements are in good agreement with those obtained from polarization studies. From the polarization studies, the inhibitors used act as mixed adsorption type inhibitors, increased adsorption resulting from an increase in the electron density at the reactive C=S and C=O groups and N-atoms. The thermodynamic parameters of adsorption obtained using Bockris-Swinkels adsorption isotherm reveal a strong interaction of these carbazides on zinc surface.
Author Information Reprint Address: FOUDA, AS (reprint author) EL MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT. Addresses: [ 1 ] TANTA UNIV,TANTA,EGYPT [ 2 ] SUEZ QANAL UNIV,FAC EDUC,AL ARISH,EGYPT
Publisher KOREAN CHEMICAL SOC, 635-4 YEOGSAM-DONG, KANGNAM-GU, SEOUL 135-703, SOUTH KOREA
32
Categories / Classification Research Areas:Chemistry Web of Science Categories:Chemistry, Multidisciplinary
Document Information Document Type:Article Language:English Accession Number: WOS:A1995RB62400018 ISSN: 0253-2964
Journal Information
Impact Factor: Journal Citation Reports®
Other Information IDS Number: RB624 Cited References in Web of Science Core Collection: 25 Times Cited in Web of Science Core Collection: 16
SYNTHESIS AND CHARACTERIZATION OF 2,2'-BIIMIDAZOLE COMPLEXES OF OXOCATIONS OF MOLYBDENUM (VI, V) AND URANIUM(VI) By:KANDIL, SS (KANDIL, SS); MADKOUR, LH (MADKOUR, LH) SPECTROSCOPY LETTERS Volume: 26 Issue: 3 Pages: 535-550 DOI: 10.1080/00387019308011552 Published: 1993 View Journal Information JCR® Category
Quartile in Category
SPECTROSCOPY
Q4
Abstract 2,2'-Biimidazole complexes of MoO2(+2), MoO2+ and UO2(+2) have been prepared and characterized by elemental analysis, conductance; and H-1 NMR, IR and electronic spectra. Two types of complexes have been identified. Those obtained from slightly acidic solutions have the formulae MoO2(H2bim)Cl2.2H2O 1, UO2(H2bim)(Ac)2 2 and UO2(H2bim)Cl2.2H2O 3; whereas those from alkaline solutions have the formulae Mo2O4(Hbim)2.2H2O 4, and MO2(Hbim)2 (M = Mo(VI) 5, U(VI) 6). The infrared spectra of these complexes show characteristic biimidazole frequencies in the 3200-2500, 1550-1000 and 750 cm-1 regions as well as metal oxygen double bonds in the 900 cm-1
33
region. The stoichiometries of the acetate complex has been confirmed from H-1 NMR signal ratios of biimidazole to acetate protons at 7.3 and 2.3 ppm, respectively. The electronic spectrum of molybdenum(V) complex showed d-d transition band at congruent-to 13,500 cm-1 in accord with that reported for copper (d9) imidazole complexes; as well as peaks due to charge transfer bands at 30,000-26,000 cm-1. Peaks assignable to BIM --> U(VI) were located at congruentto 26,600 cm-1. The most probable structures of these complexes have been suggested.
Keywords KeyWords Plus:RHODIUM(I) COMPLEXES; MOLECULAR-STRUCTURES; CRYSTAL-STRUCTURE; LIGANDS; RESONANCE; ANIONS
Author Information Reprint Address: KANDIL, SS (reprint author) TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT.
Publisher MARCEL DEKKER INC, 270 MADISON AVE, NEW YORK, NY 10016
Categories / Classification Research Areas:Spectroscopy Web of Science Categories:Spectroscopy
Document Information Document Type:Article Language:English Accession Number: WOS:A1993KR90200012 ISSN: 0038-7010
Journal Information
Impact Factor: Journal Citation Reports®
Other Information IDS Number: KR902 Cited References in Web of Science Core Collection: 24 Times Cited in Web of Science Core Collection: 4
THE INHIBITION OF THE DISSOLUTION OF ALUMINUM IN HYDROCHLORIC-ACID BY SOME BIACETYLMONOXIME HYDRAZONES By:FOUDA, AEE (FOUDA, AEE); ELASKLANY, AE (ELASKLANY, AE); MADKOUR, LH (MADKOUR, LH); IBRAHIM, KM (IBRAHIM, KM)
34
ACTA CHIMICA HUNGARICA-MODELS IN CHEMISTRY Volume: 124 Issue: 3 Pages: 377-385 Published: MAY-JUN 1987
Author Information Reprint Address: FOUDA, AEE (reprint author) MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT.
Publisher AKADEMIAI KIADO, PO BOX 245, H-1519 BUDAPEST, HUNGARY
Categories / Classification Research Areas:Chemistry Web of Science Categories:Chemistry, Multidisciplinary
Document Information Document Type:Article Language:English Accession Number: WOS:A1987K445300007 ISSN: 0231-3146
Other Information IDS Number: K4453 Cited References in Web of Science Core Collection: 8 Times Cited in Web of Science Core Collection: 2
ELECTRODEPOSITION OF INDIUM By:FOUDA, AS (FOUDA, AS); MADKOUR, LH (MADKOUR, LH); AHMED, AI (AHMED, AI) BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 2 Pages: 270-272 Published: MAR-APR 1987
Author Information Reprint Address: FOUDA, AS (reprint author) MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT. Addresses:
35
[ 1 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT
Publisher EDITIONS SCIENTIFIQUES ELSEVIER, 141 RUE JAVEL, 75747 PARIS CEDEX 15, FRANCE
Categories / Classification Research Areas:Biochemistry & Molecular Biology; Chemistry Web of Science Categories:Biochemistry & Molecular Biology; Chemistry, Multidisciplinary; Chemistry, Organic
Document Information Document Type:Article Language:English Accession Number: WOS:A1987H297500009 ISSN: 0037-8968
Other Information IDS Number: H2975 Cited References in Web of Science Core Collection: 16 Times Cited in Web of Science Core Collection: 1
ELECTROREDUCTION OF 4-ARYLHYDRAZONO-1-PHENYLPYRAZOLIDIN3,5-DIONES IN 20-PERCENT ETHANOLIC BR BUFFERS AT MERCURYELECTRODE By:ISSA, RM (ISSA, RM); GHONEIM, MM (GHONEIM, MM); ELMORSI, M (ELMORSI, M); MADKOUR, LH (MADKOUR, LH); HAMMAM, E (HAMMAM, E) JOURNAL OF THE ELECTROCHEMICAL SOCIETY Volume: 134 Issue: 3 Pages: C140-C140 Published: MAR 1987 View Journal Information JCR® Category
Quartile in Category
ELECTROCHEMISTRY
Q2
MATERIALS SCIENCE, COATINGS & FILMS
Q1
Author Information Addresses: [ 1 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT
36
Publisher ELECTROCHEMICAL SOC INC, 10 SOUTH MAIN STREET, PENNINGTON, NJ 08534
Categories / Classification Research Areas:Electrochemistry; Materials Science Web of Science Categories:Electrochemistry; Materials Science, Coatings & Films
Document Information Document Type:Meeting Abstract Language:English Accession Number: WOS:A1987G410200520 ISSN: 0013-4651
Journal Information
Impact Factor: Journal Citation Reports®
Other Information IDS Number: G4102 Cited References in Web of Science Core Collection: 0 Times Cited in Web of Science Core Collection: 0
CRITICAL MICELLE CONCENTRATIONS OF HEXADECYLTRIMETHYLAMONIUM CHLORIDE IN WATER OVER THE TEMPERATURE-RANGE 25 TO 160-DEGREES-C By:FOUDA, AA (FOUDA, AA); MADKOUR, LH (MADKOUR, LH); EVANS, DF (EVANS, DF) INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY Volume: 25 Issue: 12 Pages: 1102-1104 Published: DEC 1986 View Journal Information JCR® Category
Quartile in Category
CHEMISTRY, MULTIDISCIPLINARY
Q4
Author Information Reprint Address: FOUDA, AA (reprint author)
37
MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT. Addresses: [ 1 ] UNIV MINNESOTA,DEPT CHEM ENGN & MAT SCI,MINNEAPOLIS,MN 55455
Publisher COUNCIL SCIENTIFIC INDUSTRIAL RESEARCH, PUBL & INFO DIRECTORATE, NEW DELHI 110012, INDIA
Categories / Classification Research Areas:Chemistry Web of Science Categories:Chemistry, Multidisciplinary
Document Information Document Type:Article Language:English Accession Number: WOS:A1986G105000007 ISSN: 0376-4710
Journal Information
Impact Factor: Journal Citation Reports®
Other Information IDS Number: G1050 Cited References in Web of Science Core Collection: 6 Times Cited in Web of Science Core Collection: 5
INHIBITIVE ACTION OF SOME AMINES AND HYDRAZINES TOWARDS CORROSION OF ZINC IN TRICHLOROACETIC-ACID SOLUTION By:FOUDA, AS (FOUDA, AS); MADKOUR, LH (MADKOUR, LH) BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 5 Pages: 745-749 Published: SEP-OCT 1986
Author Information Addresses: [ 1 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT [ 2 ] MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT
Publisher 38
EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 141 RUE JAVEL, 75747 PARIS CEDEX 15, FRANCE
Categories / Classification Research Areas:Biochemistry & Molecular Biology; Chemistry Web of Science Categories:Biochemistry & Molecular Biology; Chemistry, Multidisciplinary; Chemistry, Organic
Document Information Document Type:Article Language:English Accession Number: WOS:A1986E949300015 ISSN: 0037-8968
Other Information IDS Number: E9493 Cited References in Web of Science Core Collection: 20 Times Cited in Web of Science Core Collection: 2
ELECTRODEPOSITION OF TIN FROM TINSTONE ORE By:FOUDA, AS (FOUDA, AS); MADKOUR, LH (MADKOUR, LH); KHALIFA, ME (KHALIFA, ME) BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 4 Pages: 504-506 Published: JUL-AUG 1986
Author Information Reprint Address: FOUDA, AS (reprint author) MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT. Addresses: [ 1 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT
Publisher EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 141 RUE JAVEL, 75747 PARIS CEDEX 15, FRANCE
Categories / Classification Research Areas:Biochemistry & Molecular Biology; Chemistry Web of Science Categories:Biochemistry & Molecular Biology; Chemistry, Multidisciplinary; Chemistry, Organic
Document Information Document Type:Article Language:English
39
Accession Number: WOS:A1986D456600003 ISSN: 0037-8968
Other Information IDS Number: D4566 Cited References in Web of Science Core Collection: 16 Times Cited in Web of Science Core Collection: 0
CORRELATION BETWEEN EFFECTIVENESS OF ALIPHATIC-AMINES AS CORROSION-INHIBITORS AND ELECTRON-DENSITY CALCULATIONS By:FOUDA, AS (FOUDA, AS); MADKOUR, LH (MADKOUR, LH); SOLIMAN, MS (SOLIMAN, MS) BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 3 Pages: 358-360 Published: MAY-JUN 1986
Author Information Reprint Address: FOUDA, AS (reprint author) MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT. Addresses: [ 1 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT
Publisher EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 141 RUE JAVEL, 75747 PARIS CEDEX 15, FRANCE
Categories / Classification Research Areas:Biochemistry & Molecular Biology; Chemistry Web of Science Categories:Biochemistry & Molecular Biology; Chemistry, Multidisciplinary; Chemistry, Organic
Document Information Document Type:Article Language:English Accession Number: WOS:A1986C902300004 ISSN: 0037-8968
Other Information IDS Number: C9023 Cited References in Web of Science Core Collection: 19 Times Cited in Web of Science Core Collection: 3
40
THERMODYNAMIC STUDIES ON SULFATE ROASTING FOR ZINC ELECTROWINNING FROM CARBONATE ORE By:MADKOUR, LH (MADKOUR, LH) JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY Volume: 36 Issue: 5 Pages: 197-211 Published: MAY 1986 View Journal Information JCR® Category
Quartile in Category
BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Q2
CHEMISTRY, MULTIDISCIPLINARY
Q2
ENGINEERING, CHEMICAL
Q1
Author Information Reprint Address: MADKOUR, LH (reprint author) TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT.
Publisher JOHN WILEY & SONS LTD, BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD
Categories / Classification Research Areas:Biotechnology & Applied Microbiology; Chemistry; Engineering Web of Science Categories:Biotechnology & Applied Microbiology; Chemistry, Multidisciplinary; Engineering, Chemical
Document Information Document Type:Article Language:English Accession Number: WOS:A1986C307300001 ISSN: 0268-2575
Journal Information
Impact Factor: Journal Citation Reports®
Other Information IDS Number: C3073 Cited References in Web of Science Core Collection: 17
41
Times Cited in Web of Science Core Collection: 0
ELECTRODEPOSITION OF TITANIUM AND ITS DIOXIDE FROM ILMENITE By:MADKOUR, LH (MADKOUR, LH); FOUDA, AS (FOUDA, AS) JOURNAL OF ELECTROANALYTICAL CHEMISTRY Volume: 199 Issue: 1 Pages: 207-210 DOI: 10.1016/0022-0728(86)87053-X Published: FEB 25 1986 View Journal Information JCR® Category
Quartile in Category
CHEMISTRY, ANALYTICAL
Q2
ELECTROCHEMISTRY
Q2
Author Information Reprint Address: MADKOUR, LH (reprint author) TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT. Addresses: [ 1 ] MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT
Publisher ELSEVIER SCIENCE SA LAUSANNE, PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND
Categories / Classification Research Areas:Chemistry; Electrochemistry Web of Science Categories:Chemistry, Analytical; Electrochemistry
Document Information Document Type:Note Language:English Accession Number: WOS:A1986A246800016 ISSN: 0022-0728
Other Information IDS Number: A2468 Cited References in Web of Science Core Collection: 18 Times Cited in Web of Science Core Collection: 3
42
RECOMMENDED FLOWSHEETS FOR THE ELECTROLYTIC EXTRACTION OF LEAD AND ZINC FROM RED-SEA POLYMETAL ORE By:MADKOUR, LH (MADKOUR, LH) JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY A-CHEMICAL TECHNOLOGY Volume: 35 Issue: 3 Pages: 108-114 Published: 1985
Author Information Reprint Address: MADKOUR, LH (reprint author) TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT, EGYPT.
Publisher BLACKWELL SCIENCE LTD, OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL
Categories / Classification Research Areas:Biotechnology & Applied Microbiology Web of Science Categories:Biotechnology & Applied Microbiology
Document Information Document Type:Article Language:English Accession Number: WOS:A1985AFR1000002 ISSN: 0264-3413
Other Information IDS Number: AFR10 Cited References in Web of Science Core Collection: 18 Times Cited in Web of Science Core Collection: 5
THE EFFECT OF SOME BETA-DIKETO COMPOUNDS ON THE CORROSION OF ZINC IN HYDROCHLORIC-ACID SOLUTION By:FOUDA, AS (FOUDA, AS); ELASKLANY, AH (ELASKLANY, AH); MADKOUR, LH (MADKOUR, LH) JOURNAL OF THE INDIAN CHEMICAL SOCIETY Volume: 61 Issue: 5 Pages: 425-429
43
Published: 1984
Author Information Reprint Address: FOUDA, AS (reprint author) MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT.
Publisher INDIAN CHEMICAL SOC, 92 ACHARYA PRAFULLA CHANDRA RD ATTN:DR INDRAJIT KAR/EXEC SEC, CALCUTTA 700009, INDIA
Categories / Classification Research Areas:Chemistry Web of Science Categories:Chemistry, Multidisciplinary
Document Information Document Type:Article Language:English Accession Number: WOS:A1984TL48300014 ISSN: 0019-4522
Other Information IDS Number: TL483 Cited References in Web of Science Core Collection: 23 Times Cited in Web of Science Core Collection: 5
44
