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高等学校化学研究 ›› 2012, Vol. 28 ›› Issue (4): 691-695.

• Articles • 上一篇    下一篇

Corrosion Inhibition of Imidazoline Derivates with Benzene Rings on Mild Steel in CO2-Saturated Brine Solution

CHEN Guo-hao, ZHAO Jing-mao   

  1. College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
  • 收稿日期:2011-11-23 修回日期:2012-01-13 出版日期:2012-07-25 发布日期:2012-07-25
  • 通讯作者: ZHAO Jing-mao E-mail:jingmaozhao@126.com
  • 基金资助:

    Supported by the National Natural Science Foundation of China(No.51171013).

Corrosion Inhibition of Imidazoline Derivates with Benzene Rings on Mild Steel in CO2-Saturated Brine Solution

CHEN Guo-hao, ZHAO Jing-mao   

  1. College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
  • Received:2011-11-23 Revised:2012-01-13 Online:2012-07-25 Published:2012-07-25
  • Contact: jingmao zhao E-mail:jingmaozhao@126.com
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.51171013).

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摘要： Corrosion inhibition of three imidazoline derivates with different numbers of benzene rings, namely 2-phenyl-1-ethylamino imidazoline(CI-1), 2-phenyl-1-ethylamino-1-methylbenzyl quaternary imidazoline(CI-12) and 2-phenyl-1-benzoyl ethylamino imidazoline(CI-13), on mild steel in CO2-saturated brine solution was evaluated by mass-loss method and potentiodynamic polarization method. The results show that the three imidazoline derivates can inhibit CO2 corrosion effectively with CI-12 ranking the highest. They mainly restrain the anodic dissolution and act as anodic-type inhibitors. The adsorptions of these derivates on the mild steel surface follow the Langmuir adsorption isothermal equation and belong to chemical adsorption.

关键词: Corrosion inhibitor, CO2 corrosion, Langmuir adsorption, Imidazoline derivate

Abstract: Corrosion inhibition of three imidazoline derivates with different numbers of benzene rings, namely 2-phenyl-1-ethylamino imidazoline(CI-1), 2-phenyl-1-ethylamino-1-methylbenzyl quaternary imidazoline(CI-12) and 2-phenyl-1-benzoyl ethylamino imidazoline(CI-13), on mild steel in CO2-saturated brine solution was evaluated by mass-loss method and potentiodynamic polarization method. The results show that the three imidazoline derivates can inhibit CO2 corrosion effectively with CI-12 ranking the highest. They mainly restrain the anodic dissolution and act as anodic-type inhibitors. The adsorptions of these derivates on the mild steel surface follow the Langmuir adsorption isothermal equation and belong to chemical adsorption.

Key words: Corrosion inhibitor, CO2 corrosion, Langmuir adsorption, Imidazoline derivate