Corrosion behaviour of API 5LX52 steel in HCl and H2SO4 media in the presence of 1,3-dibencilimidazolio acetate and 1,3-dibencilimidazolio dodecanoate ionic liquids as inhibitors

被引：81

作者：

Lozano, I. ^{[1
]}

Mazario, E. ^{[2
]}

Olivares-Xometl, C. O. ^{[1
]}

Likhanova, N. V. ^{[3
]}

Herrasti, P. ^{[2
]}

机构：

[1] Benemerita Univ Autonoma Puebla, Fac Ingn Quim, Mexico City 23354, DF, Mexico

[2] Univ Autonoma Madrid, Fac Ciencias, Dept Quim Fis Aplicada, E-28049 Madrid, Spain

[3] Inst Mexicano Petr, Programa Ingn Mol, Mexico City 07730, DF, Mexico

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2014年 / 147卷 / 1-2期

关键词：

Adsorption; Corrosion; Chemisorption; Electrochemical techniques; HYDROCHLORIC-ACID SOLUTION; ORTHO-SUBSTITUTED ANILINES; MILD-STEEL; SULFURIC-ACID; CARBON-STEEL; POLY(ETHYLENE GLYCOL); STAINLESS-STEEL; ALUMINUM; DERIVATIVES; ADSORPTION;

D O I：

10.1016/j.matchemphys.2014.04.029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two ionic liquids, 1,3-dibencilimidazolio acetate (DBImA) and 1,3-dibencilimidazolio dodecanoate (DBImL), were investigated as corrosion inhibitors in 1.0 M HCl and H2SO4 solutions. The data extracted from Tafel plots, electrochemical impedance spectroscopy and SEM indicate a high inhibition effectiveness in HCl solution. A dense layer of physisorbed inhibitor prevents the diffusion of ionic species from the film and/or the attack of the surface by ions in solution. The protection efficiency increases as the concentration of the inhibitors increases. The adsorption of these inhibitors on steel surfaces obeys the Langmuir isotherm. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：191 / 197

页数：7

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