咪唑啉类缓蚀剂对含饱和CO<sub>2</sub>的模拟油田采出液中Q235-A钢的缓蚀作用

中国腐蚀与防护学报

2010, Vol. 30

Issue (1): 16-20

研究报告

本期目录 | 过刊浏览

咪唑啉类缓蚀剂对含饱和CO₂的模拟油田采出液中Q235-A钢的缓蚀作用

王彬;张静;杜敏

中国海洋大学化学化工学院海洋化学理论与工程技术教育部重点实验室青岛 266100

INHIBITION PERFORMANCE OF IMIDAZOLINE INHIBITORS FOR Q235-A STEEL IN THE SIMULATED PRODUCING WELL WATER SATURATED WITH CO₂

WANG Bin; ZHANG Jing; DU Min

Key Laboratory of Marine Chemistry Theory and Technology; Ministry of Education; Ocean University of China; Qingdao 266100

全文: PDF(630 KB)

摘要:

用失重法、极化曲线和电化学阻抗谱测试技术研究了三种咪唑啉类缓蚀剂对Q235-A钢在85℃、含有饱和CO₂的模拟油田采出液中的腐蚀行为。结果表明，三种缓蚀剂都是典型的阳极抑制型缓蚀剂，作用方式为“负催化效应”；由于所含亲水官能团不同，三种缓蚀剂吸附成膜速度具有较大差别。

关键词 ： CO₂腐蚀, 咪唑啉衍生物缓蚀剂, 极化曲线, 电化学阻抗谱

Abstract：

Inhibition performance of three kinds of imidazoline derivative inhibitors for Q235-A steel in the simulated producing well water saturated with CO₂ at 85℃ were studied using weight loss and electrochemistry techniques including electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization. The results of weight loss showed that the three kinds of imidazoline derivative inhibitors all had good inhibitor properties at concentration of 40 mg/L, the inhibition efficiency of inhibitor HSJ-3 was up to 80 %. The sharp decrease of anodic current density and positive shift of corrosion potential (E_corr) indicated that these imidazoline derivative inhibitors were all anodic inhibitors which worked as “negative catalysis”. The results of EIS showed that the film of inhibitor HSJ-1 with alkyl formed slowly; the film of inhibitor HSJ-2 with thiourido group formed fast and could be auto-repaired; the film of inhibitor HSJ-3 with phosphonic group also formed fast, but decayed in a short time.

Key words： CO₂ corrosion imidazoline derivative inhibitors polarization curve EIS

收稿日期: 2008-08-19

ZTFLH:

O646

基金资助:

国家自然科学基金项目（40806030）资助

通讯作者: 杜敏 E-mail: ssdm99@ouc.edu.cn

Corresponding author: DU Min E-mail: ssdm99@ouc.edu.cn

作者简介: 王彬，女，1983年生，博士生，研究方向为金属腐蚀与防护

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王彬;张静;杜敏. 咪唑啉类缓蚀剂对含饱和CO₂的模拟油田采出液中Q235-A钢的缓蚀作用[J]. 中国腐蚀与防护学报, 2010, 30(1): 16-20.
YU Ban, DU Min, ZHANG Jing, LIU Jie. INHIBITION PERFORMANCE OF IMIDAZOLINE INHIBITORS FOR Q235-A STEEL IN THE SIMULATED PRODUCING WELL WATER SATURATED WITH CO₂. J Chin Soc Corr Pro, 2010, 30(1): 16-20.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2010/V30/I1/16

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