Corrosion inhibition behavior of new synthesized nonionic surfactants based on amino acid on carbon steel in acid media

被引：36

作者：

Al-Sabagh, A. M. ^{[1
]}

Nasser, N. M. ^{[1
]}

El-Azabawy, Olfat E. ^{[1
]}

El-Tabey, Amira E. ^{[1
]}

机构：

[1] Egyptian Petr Res Inst, Cairo 11727, Egypt

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2016年 / 219卷

关键词：

Corrosion inhibition; Amino acid; Carbon steel; HCl; EIS; MILD-STEEL; SULFURIC-ACID; HCL; COPPER; TEMPERATURE; PERFORMANCE; DERIVATIVES;

D O I：

10.1016/j.molliq.2016.03.048

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：

Three structurally different amino acids (Leucine, phenyl alanine and methionine) were reacted with oleic acid and polyethylene glycol (600) to give three nonionic surfactants (S-1, S-2 and S-3). The chemical structures of the prepared surfactants were confirmed by FT-IR and H-1, (CNMR)-C-13. The surface parameters were calculated by surface tension measurements. The inhibition efficiencies of the prepared inhibitors on carbon steel in 1 M HCl were studied using polarization, and electrochemical impedance spectroscopy. Correlation between the quantum chemical calculations and inhibition efficiency was discussed. From the obtained results, the inhibitor based on L-phenyl alanine has high efficiency (94.14% at 1 x 10(-3) mol L-1) more than the other inhibitors. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：1078 / 1088

页数：11

共 48 条

[11] Corrosion inhibition of steel in sulphuric acid by pyrrolidine derivatives [J].