Adsorption of IFKhAN-92 Corrosion Inhibitor from Acidic Phosphate Solution on Low Carbon Steel

被引：12

作者：

Avdeev, Ya. G. ^{[1
]}

Luchkin, A. Yu. ^{[1
]}

Tyurina, M. V. ^{[1
]}

Kuznetsov, Yu. I. ^{[1
]}

机构：

[1] Russian Acad Sci, Frumkin Inst Phys Chem & Electrochem, Moscow 119991, Russia

来源：

PROTECTION OF METALS AND PHYSICAL CHEMISTRY OF SURFACES | 2017年 / 53卷 / 07期

关键词：

low carbon steel; acid corrosion; inhibitors of acid corrosion; adsorption; triazoles; MILD-STEEL; TRIAZOLE DERIVATIVES; SULFURIC-ACID;

D O I：

10.1134/S2070205117070048

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Adsorption of an IFKhAN-92 inhibitor, triazole derivative, on low carbon steel from 2.0 M H3PO4 (22 +/- 1A degrees C) has been studied using impedance spectroscopy. It is demonstrated that its adsorption is described by the Temkin isotherm with relatively high free adsorption energy (-Delta G (ads)) = 51 +/- 1 kJ/mol. It is suggested that the inhibitor adsorption is of chemisorption pattern, which is confirmed by description of adsorption kinetics by the Roginsky-Zeldovich equation. It is illustrated that the addition of 0.5 mM KCNS into H3PO4 solution increases the rate constant in the Roginsky-Zeldovich equation for adsorption of IFKhAN-92 on a steel surface and, consequently, accelerates this process in time.

引用

页码：1247 / 1251

页数：5

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