Experimental and quantum chemical characterization of the adsorption of some Schiff base compounds of phthaloyl thiocarbohydrazide on the mild steel in acid solutions

被引：117

作者：

Ahamad, I. ^{[1
]}

Prasad, R. ^{[2
]}

Quraishi, M. A. ^{[1
]}

机构：

[1] Banaras Hindu Univ, Inst Technol, Dept Appl Chem, Varanasi 221005, Uttar Pradesh, India

[2] SGB Amravati Univ, Dept Chem, Amravati 444602, India

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2010年 / 124卷 / 2-3期

关键词：

Metals; Corrosion; Electrochemical techniques; Adsorption; CORROSION INHIBITION; SULFURIC-ACID; TRIAZOLE DERIVATIVES; EFFICIENCY; COMPLEXES; COPPER; IRON;

D O I：

10.1016/j.matchemphys.2010.08.051

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Three derivatives of 2-[2-(hydrazinecarbonothioyl)hydrazinecarbonyl]benzoic acid (IL1) have been evaluated as new corrosion inhibitors for the corrosion of mild steel in 1 M HCl solutions using weight loss polarization and electrochemical Impedance spectroscopy (EIS) techniques The adsorption of these compounds has been tested thermodynamically which was found to be of neither a typical physisorption nor a typical chemisorption mode The thermodynamic functions (such as E-a Delta H degrees(ads) Delta S degrees(ads) and Delta G degrees(ads)) of dissolution and adsorption processes have been evaluated The polarization measurements indicated that the inhibitors are of mixed type The adsorption of the compounds was found to obey Langmuir s adsorption isotherm In addition quantum chemical calculations have been made to correlate inhibition efficiencies determined experimentally (C) 2010 Elsevier B V All rights reserved

引用

页码：1155 / 1165

页数：11

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