The Corrosion Inhibition Performance and Mechanism of Rhamnolipid for X65 Steel in CO2-Saturated Oilfield-Produced Water

被引：10
|
作者：
Zhang, Jing [1 ,2 ]
Wang, Meng [1 ]
Liu, Chongshu [1 ]
Fang, Zhaomei [1 ]
机构：
[1] Ocean Univ China, Coll Chem & Chem Engn, Qingdao 266100, Peoples R China
[2] Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao 266100, Peoples R China
来源：
JOURNAL OF SURFACTANTS AND DETERGENTS | 2021年 / 24卷 / 05期
关键词：
Rhamnolipid; Corrosion inhibitor; Inhibition mechanism; CO2; corrosion;
D O I：
10.1002/jsde.12478
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The corrosion inhibition effect and mechanism of rhamnolipid (RL) were studied for X65 steel in oilfield-produced water saturated with CO2 using the weight loss method, electrochemical measurements, surface analysis, surface-enhanced Raman spectroscopy (SERS), and quantum chemical calculations. The results prove that RL is an excellent inhibitor against CO2 corrosion and predominantly inhibits the anodic corrosion reaction of X65 steel. The inhibition performance of RL is connected with surface activity and molecular structure. RL adsorbs on the metal surface by the reactivity centers to form a protective film, and the film has good inhibition ability for X65 steel for up to 168 h.
引用
收藏
页码：809 / 819
页数：11
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