Inhibition Mechanism of Imidazoline Derivate in Simulated Water from Deep Gaswell Containing CO_2

Authors

Yuan LU, College of Materials Science and Engineering,Beijing University ofChemical Technology,Beijing 100029,China;
He-xia LIU, College of Materials Science and Engineering,Beijing University ofChemical Technology,Beijing 100029,China;
Jing-mao ZHAO, College of Materials Science and Engineering,Beijing University ofChemical Technology,Beijing 100029,China;

Corresponding Author

Jing-mao ZHAO

Abstract

The electrochemical method and atomic force microscope(AFM) were applied to study the inhibition mechanism of Im-D,an imidazoline derivate inhibitor,for mild steel in CO2 saturated solution.The imidazoline derivate can inhibit effectively CO2 corrosion,make the steel surface smoother and belongs to the anodic controlled mixed-type inhibitor.Its adsorption on the surface of mild steel is a spontaneous and exothermic process accompanied by the decrease of entropy and follows the Langmuir adsorption isothermal equation.The lower temperature will facilitate the process.The changes in the apparent activation energy(Ea) and the pre-exponential factor(A) of the corrosion reaction before and after the addition of inhibitor were also discussed.

Keywords

CO2 corrosion, inhibitor, imidazoline derivate, AFM, Langmiur adsorption

DOI Link

https://doi.org/10.61558/2993-074X.1815

Publication Date

2007-08-28

Online Available Date

2007-08-28

Revised Date

2007-08-28

Received Date

2007-08-28

Recommended Citation

Yuan LU, He-xia LIU, Jing-mao ZHAO. Inhibition Mechanism of Imidazoline Derivate in Simulated Water from Deep Gaswell Containing CO_2[J]. Journal of Electrochemistry, 2007 , 13(3): 242-248.
DOI: 10.61558/2993-074X.1815
Available at: https://jelectrochem.xmu.edu.cn/journal/vol13/iss3/3