Fluconazole as an inhibitor for aluminium corrosion in 0.1 M HCl

被引：148

作者：

Obot, I. B. ^{[1
]}

Obi-Egbedi, N. O. ^{[2
]}

机构：

[1] Univ Uyo, Dept Chem, Uyo, Akwa Ibom State, Nigeria

[2] Univ Ibadan, Dept Chem, Ibadan, Nigeria

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2008年 / 330卷 / 2-3期

关键词：

Fluconazole; Aluminium; Corrosion inhibition; Adsorption isotherm; Quantum chemical studies; Austin Model 1 (AM1);

D O I：

10.1016/j.colsurfa.2008.07.058

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The interfacial behavior of fluconazole (FLC) between aluminium and hydrochloric acid has been investigated by using weight loss technique at 30-50 degrees C. The results showed that fluconazole is an excellent corrosion inhibitor for aluminium in acidic medium. Inhibition efficiency increased with increase in the concentrations of fluconazole but decreased with rise in temperature. The adsorption of the inhibitor on the aluminium surface is found to accord with Temkin adsorption isotherm. Some thermodynamic and activation parameters have been calculated and analysed. The mechanism of physical adsorption is proposed from the values of E-a and Delta G degrees(ads)., obtained. The correlation of inhibition effect and molecular structure of fluconazole was then discussed by quantum chemistry study to further provide insight into the mechanism of the inhibitory action. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：207 / 212

页数：6

共 27 条

[1] Piperidin-1-yl-phosphonic acid and (4-phosphono-piperazin-1-yl) phosphonic acid: A new class of iron corrosion inhibitors in sodium chloride 3% media [J].