Inhibition Mechanism of Imidazoline Amide in CO2 Solution

Chinese Journal of Applied Chemistry ›› 1998, Vol. 0 ›› Issue (6): 21-24.

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Inhibition Mechanism of Imidazoline Amide in CO₂ Solution

Zhang Xueyuan, Ma Limin, Du Yuanlong, Cao Dianzhen

State Key Laboratory for Corrosion and Protection, Institute of Corrosion and Protection of Metals, Chinese Academy of Sciences, Shenyang 110015

Received:1998-06-25 Revised:1998-09-28 Published:1998-12-10 Online:1998-12-10

Abstract

Abstract: The inhibition mechanism of imidazoline amide(IM) in CO₂ solution has been studied by electrochemical techniques including electrochemical impedance spectrum and polarization result measurements. It is shown that the inhibition of IM is due to the negative catalytic effect on the iron. Its adsorption obeyed the Langmuir isotherm. The positive shift over to adsorption potential is the main reason of desorption of IM on the anode, which increases the interface capacity and decreases the transmission resistance.

Key words: imidazoline amide, inhibition, desorption, iron, NaCl solution

Zhang Xueyuan, Ma Limin, Du Yuanlong, Cao Dianzhen. Inhibition Mechanism of Imidazoline Amide in CO₂ Solution[J]. Chinese Journal of Applied Chemistry, 1998, 0(6): 21-24.

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Inhibition Mechanism of Imidazoline Amide in CO₂ Solution

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