Corrosion inhibition of mild steel by Calotropis procera leaves extract in a CO2 saturated sodium chloride solution

被引：34

作者：

Ibrahim, Taleb ^{[1
]}

Gomes, Elron ^{[1
]}

Obot, Ime B. ^{[2
]}

Khamis, Mustafa ^{[3
]}

Abou Zour, Mohamed ^{[4
]}

机构：

[1] Amer Univ Sharjah, Dept Chem Engn, Sharjah, U Arab Emirates

[2] King Fahd Univ Petr & Minerals, Res Inst, Ctr Res Excellence Corros, Dhahran, Saudi Arabia

[3] Amer Univ Sharjah, Dept Chem Biol & Environm Sci, Sharjah, U Arab Emirates

[4] GE Water & Proc Technol, Dubai, U Arab Emirates

来源：

JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY | 2016年 / 30卷 / 23期

关键词：

Steel corrosion; molecular simulation; electrochemical techniques; adsorption; polarization; natural corrosion inhibitor; CARBON-DIOXIDE CORROSION; AMPHIPHILIC AMIDO-AMINE; ACID-MEDIUM; TEMPERATURE; PERFORMANCE; DERIVATIVES; IMIDAZOLINE; ADSORPTION; EFFICIENCY;

D O I：

10.1080/01694243.2016.1185229

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The Calotropis procera leaves extract (CPLE) was investigated as a corrosion inhibitor for mild steel in a CO2-saturated 3.5 wt% NaCl solution using various electrochemical techniques. The results show that the CPLE is an effective inhibitor with inhibition efficiency of 80% using 50 ppm. Polarization studies show that the CPLE acts as a mixed inhibitor, and the adsorption of CPLE follows Langmuir adsorption isotherm. Molecular dynamics simulations reveal that the presence of N, O in the CPLE as well as p-electron systems coupled with high adsorption energies of interaction of the CPLE with steel are responsible for corrosion inhibition performance.

引用

页码：2523 / 2543

页数：21

共 43 条

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