Experimental and theoretical evaluation of N, N-Bis(2-pyridylmethyl)aniline as a novel corrosion inhibitor for mild steel in hydrochloric acid

被引:37
作者
Xu, Bin [1 ]
Ji, Yan [1 ]
Zhang, Xueqiong [1 ]
Jin, Xiaodong [1 ]
Yang, Wenzhong [1 ]
Chen, Yizhong [2 ]
机构
[1] Nanjing Tech Univ, Sch Sci, 5 New Model Rd, Nanjing 210009, Jiangsu, Peoples R China
[2] Jiangsu Polytech Univ, Sch Environm & Safety Engn, Changzhou 213164, Peoples R China
关键词
Mild steel; Adsorption; Computer modeling; Inhibition; Electrochemistry; 0.5 M H2SO4; CARBON-STEEL; BENZIMIDAZOLE DERIVATIVES; HCL; PERFORMANCE; BEHAVIOR; ADSORPTION; THIOSEMICARBAZONE; INDOLE; ISATIN;
D O I
10.1016/j.jtice.2015.08.020
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The inhibition performance of a pyridine derivative with more than one pyridine ring, N, N-Bis(2-pyridylmethyl)aniline (BPA), for mild steel in 1.0 M HCl was evaluated by weight loss, electrochemical measurements and scanning electron microscopy methods. Then the experimental results were confirmed by quantum chemical calculations and molecular dynamics simulations methods. It was found that BPA behaved as a mixed type inhibitor, retarding both anodic metal dissolution and cathodic hydrogen evolution reactions. The adsorption process of BPA obeyed the Langmuir isotherm and the thermodynamic parameters were discussed. The scanning electron microscopy study proved that BPA can exhibit good inhibition ability by forming a protective film on the mild steel surface. (C) 2015 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:526 / 535
页数:10
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