| 盐酸中1-苯胺甲基苯并咪唑对碳钢的缓蚀行为 |
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| 引用本文： | 苏铁军,李克华,罗运柏.盐酸中1-苯胺甲基苯并咪唑对碳钢的缓蚀行为[J].应用化学,2015,32(4):464-471. |
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| 作者姓名： | 苏铁军 李克华 罗运柏 |
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| 作者单位： | 长江大 学工程技术学院 湖北 荆州 434020
;长江大学 化学与环境工程学院 湖北 荆州 434020
;武汉大学化学与分子科学学院 武汉 430072 |
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| 摘 要： | 采用静态失重、动电位极化、交流阻抗等技术方法研究了1-苯胺甲基苯并咪唑(PAB)对盐酸介质中N80钢的缓蚀性能,并讨论了PAB在N80钢表面的吸附行为。 结果表明,缓蚀率随着PAB浓度增大而升高,随着温度升高而下降。 极化曲线测试表明PAB是一种混合控制型缓蚀剂。 PAB在N80钢表面的吸附是一个自发、放热、熵增的过程,其行为符合Langmuir吸附等温式。 同时采用量子化学方法对PAB的缓蚀机理做了进一步分析。
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| 关 键 词： | 缓蚀剂 失重法 动电位极化 阻抗 量子化学计算 |
| 收稿时间： | 2014-08-25 |
Inhibition Behavior of 1-Phenylaminomethylbenzimidazole for Mild Steel in Hydrochloric Acid |
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| SU Tiejuna,
,LI Kehuab,LUO Yunbaic.Inhibition Behavior of 1-Phenylaminomethylbenzimidazole for Mild Steel in Hydrochloric Acid[J].Chinese Journal of Applied Chemistry,2015,32(4):464-471. |
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| Authors: | SU Tiejuna
LI Kehuab LUO Yunbaic |
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| Institution: | College of Technology and Engineering;College of Chemistry and Environmental engineering, Yangtze University,Jingzhou,Hubei 434020,China;College of Chemistry and Molecular Sciences,Wuhan University,Wuhan 430072,China |
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| Abstract: | The inhibition effect and adsorption behavior of 1-phenylaminomethylbenzimidazole (PAB) for N80 steel in HCl solution were investigated by mass-loss test, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The inhibition efficiency increased with higher concentration of PAB and decreased with elevated temperature. Polarization curve reveals that PAB is a mix-type inhibitor. The adsorption between PAB and N80 steel surface is a spontaneous, exothermic and entropy increasing process fitting Langmuir isotherm. The relationship between the molecular structure of PAB and the inhibition efficiency was investigated using quantum chemical calculations. |
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| Keywords: | corrosion inhibitor mass loss potentiodynamic polarization impedance quantum chemistry calculation |
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