饱和CO<sub>2</sub>盐水溶液中咪唑啉缓蚀剂在碳钢表面上的吸附行为

中国腐蚀与防护学报

2011, Vol. 31

Issue (4): 305-308

研究报告

本期目录 | 过刊浏览

饱和CO₂盐水溶液中咪唑啉缓蚀剂在碳钢表面上的吸附行为

艾俊哲¹,梅平¹,郭兴蓬²

1. 长江大学化学与环境工程学院荆州 434023
2. 华中科技大学化学系武汉 430074

ADSORPTION BEHAVIOR OF IMIDAZOLINE INHIBITOR ON CARBON STEEL IN CO₂ SATURATED NaCl SOLUTION

AI Junzhe¹ MEI Ping¹, GUO Xingpeng²

1. College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023
2. Department of Chemistry, Huazhong University of Science and Technology, Wuhan 430074

全文: PDF(460 KB)

摘要: 采用动电位极化曲线对咪唑啉缓蚀剂(MA)进行了测试，研究了在饱和CO₂的1% NaCl水溶液中，缓蚀剂在碳钢表面的吸附行为，并计算了吸附反应的热力学参数，探讨了缓蚀剂的吸附模型。结果表明，该缓蚀剂是一种混合抑制型缓蚀剂，其缓蚀率随缓蚀剂浓度（3×10^{- 5}~1.5×10 ^{- 3}mol/L）的增加而增加、随温度（30℃~60℃）的升高而降低。缓蚀剂MA在碳钢表面的吸附满足El-Awady等动力学模型，并与Flory-Huggins吸附等温线相吻合。

关键词 ：二氧化碳, 咪唑啉缓蚀剂, 缓蚀率, 吸附

Abstract：Adsorption behavior of an imidazoline inhibitor (MA) on carbon steel in CO₂ saturated 1% NaCl solution is studied by potentiodynamic polarization curves. The thermodynamic parameters are calculated and the adsorption isotherm is also discussed. The results show that MA is of mixed adsorption and its inhibition efficiencies increased with the increasing of MA concentration and decreased with the increasing of temperature. The adsorption of MA meets the El-Awady thermodynamic kinetic model, and is in line with the Flory-Huggins isotherm.

Key words： carbon dioxide imidazoline inhibitor inhibition efficiency adsorption

收稿日期: 2010-05-17

ZTFLH:

TG174.42

基金资助:

中国石油科技创新项目(2010D-5006-0203), 湖北省教育厅基金项目（Q20101307）及荆州市科技局基金项目（20092P025-D）资助

通讯作者: 艾俊哲 E-mail: aajzz@163.com

Corresponding author: AI Junzhe E-mail: aajzz@163.com

作者简介: 艾俊哲，男，1975年生，博士，研究方向为腐蚀电化学

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引用本文:

艾俊哲,梅平,郭兴蓬. 饱和CO₂盐水溶液中咪唑啉缓蚀剂在碳钢表面上的吸附行为[J]. 中国腐蚀与防护学报, 2011, 31(4): 305-308.
YI Jun-Zhe, MEI Beng, GUO Xin-Peng. ADSORPTION BEHAVIOR OF IMIDAZOLINE INHIBITOR ON CARBON STEEL IN CO₂ SATURATED NaCl SOLUTION. J Chin Soc Corr Pro, 2011, 31(4): 305-308.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2011/V31/I4/305

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