Corrosion inhibition of mild steel by an effective imidazoline derivative based on waste oil in hydrochloric acid

被引：2
作者：
Zhang, H. H. [1 ,2 ]
Chen, Y. [2 ]
Zhang, Z. [1 ]
机构：
[1] Zhejiang Univ, Dept Chem, Hangzhou 310027, Zhejiang, Peoples R China
[2] Binzhou Univ, Dept Chem Engn & Safety, Binzhou 256600, Shandong, Peoples R China
来源：
DESALINATION AND WATER TREATMENT | 2019年 / 159卷
基金：
中国国家自然科学基金;
关键词：
Mild steel; Inhibition; Waste oil; Polarization; EIS; 1 M HCL; CARBON-STEEL; BENZIMIDAZOLE DERIVATIVES; COPPER CORROSION; SCHIFF-BASE; ADSORPTION; EXTRACT; NACL; TEMPERATURE; PERFORMANCE;
D O I：
10.5004/dwt.2019.24062
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
An efficient imidazoline derivative (WOI) based on waste oil was synthesized and its inhibition effect on mild steel corrosion in 1.0 M HCl solution was investigated using gravimetric measurements, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), scanning electron microscopy and energy dispersive spectrum. Results revealed that WOI showed good inhibition performance for mild steel in 1.0 M HCl. Potentiodynamic polarization study indicated that the WOI inhibitor acted as mixed-type inhibitor, and predominantly cathodic. EIS measurements suggested that the inhibition efficiency increased with increasing WOI inhibitor concentration and the maximum value of inhibition efficiency was 93.6% at 200 mg/L. Adsorption of WOI inhibitor on mild steel surface in 1.0 M HCl is spontaneous and obeys Langmuir adsorption isotherm. Both the physical and chemical adsorption existed for the WOI inhibitor adsorption on mild steel surface, and the physical adsorption is predominant. Meanwhile, the activation energy E-a and some thermodynamic parameters (Delta H*,Delta S*) were calculated to give insight into the inhibition mechanism.
引用
收藏
页码：257 / 268
页数：12
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