Inhibition mechanism of imidazoline derivative inhibitor for q235 steel in saltwater saturated with CO2

被引：17

作者：

Liu Fu-Guo ^{[1
]}

Du Min ^{[1
]}

Zhang Jing ^{[1
]}

Qiu Meng ^{[1
]}

机构：

[1] Ocean Univ China, Coll Chem & Chem Engn, Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao 266100, Shandong Prov, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 2008年 / 24卷 / 01期

关键词：

EIS; potentiodynamic polarization; corrosion inhibitor; Langmuir isotherm; quantum chemistry;

D O I：

10.3866/PKU.WHXB20080124

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：

Laboratory investigations (polarization and electrochemical impedance spectroscopy) were performed in order to assess the effectiveness and the inhibition mechanism of new synthesized imidazoline derivative inhibitor to prevent corrosion of steel in saltwater saturated with carbon dioxide. The inhibitor efficiencies and thermodynamic parameters were calculated. The inhibition efficiency increased with the increase in inhibitor concentration, but increased then decreased with temperature. It was seen that the adsorption of imidazoline derivative on steel fitted the Langmuir isotherm equation. The electrochemical results have also been supplemented by quantum chemical analysis.

引用

页码：138 / 142

页数：5

共 21 条

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