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The inhibition of benzimidazole derivatives on corrosion of iron in 1 M HCl solutions
Electrochimica Acta ( IF 5.5 ) Pub Date : 15 July 2003 , DOI: 10.1016/s0013-4686(03)00291-3 K.F. Khaled
Electrochimica Acta ( IF 5.5 ) Pub Date : 15 July 2003 , DOI: 10.1016/s0013-4686(03)00291-3 K.F. Khaled
The inhibitive action of some benzimidazole derivatives namely 2-aminobenzimidazole (AB), 2-(2-pyridyl)benzimidazole (PB), 2-aminomethylbenzimidazole (MB), 2-hydroxybenzimidazole (HB) and benzimidazole (B), against the corrosion of iron (99.9999%) in solutions of hydrochloric acid has been studied using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). At inhibitor concentration range (10−3–10−2 M) in 1 M acid, the results showed that these compounds suppressed both cathodic and anodic processes of iron corrosion in 1 M HCl by adsorption on the iron surface according to Langmuir adsorption isotherm. The efficiency of these inhibitors increases in the order AB>PB>MB>HB>B. Both potentiodynamic and EIS measurements reveal that these compounds inhibit the iron corrosion in 1 M HCl and that the efficiency increases with increasing of the inhibitor concentration. Data obtained from EIS were analyzed to model the corrosion inhibition process through equivalent circuit. A correlation between the highest occupied molecular orbital EHOMO and inhibition efficiencies was sought.
中文翻译:
苯并咪唑衍生物对1 M HCl溶液中铁腐蚀的抑制作用
某些苯并咪唑衍生物(2-氨基苯并咪唑(AB),2-(2-吡啶基)苯并咪唑(PB),2-氨基甲基苯并咪唑(MB),2-羟基苯并咪唑(HB)和苯并咪唑(B)的缓蚀作用使用电位动力学极化和电化学阻抗谱(EIS)研究了盐酸溶液中的铁(99.9999%)。在抑制剂浓度范围(10 -3 –10 -2M)在1 M酸中,结果表明这些化合物通过根据Langmuir吸附等温线吸附在铁表面上,从而抑制了在1 M HCl中铁腐蚀的阴极和阳极过程。这些抑制剂的效率以AB> PB> MB> HB> B的顺序增加。电位动力学和EIS测量均表明,这些化合物可抑制1 M HCl中的铁腐蚀,且效率随抑制剂浓度的增加而增加。分析从EIS获得的数据,以通过等效电路对腐蚀抑制过程进行建模。寻找最高占据分子轨道E HOMO与抑制效率之间的相关性。
更新日期:2017-01-31
中文翻译:
![](https://scdn.x-mol.com/jcss/images/paperTranslation.png)
苯并咪唑衍生物对1 M HCl溶液中铁腐蚀的抑制作用
某些苯并咪唑衍生物(2-氨基苯并咪唑(AB),2-(2-吡啶基)苯并咪唑(PB),2-氨基甲基苯并咪唑(MB),2-羟基苯并咪唑(HB)和苯并咪唑(B)的缓蚀作用使用电位动力学极化和电化学阻抗谱(EIS)研究了盐酸溶液中的铁(99.9999%)。在抑制剂浓度范围(10 -3 –10 -2M)在1 M酸中,结果表明这些化合物通过根据Langmuir吸附等温线吸附在铁表面上,从而抑制了在1 M HCl中铁腐蚀的阴极和阳极过程。这些抑制剂的效率以AB> PB> MB> HB> B的顺序增加。电位动力学和EIS测量均表明,这些化合物可抑制1 M HCl中的铁腐蚀,且效率随抑制剂浓度的增加而增加。分析从EIS获得的数据,以通过等效电路对腐蚀抑制过程进行建模。寻找最高占据分子轨道E HOMO与抑制效率之间的相关性。