摘要
以高纯环烷酸为原料合成了系列酰胺咪唑啉季铵盐水溶性缓蚀剂,探讨了其咪唑啉环N(1)原子上取代基与缓蚀性能之间的关系。采用取代基电子效应法和碳钢挂片失重法,从理论与实验两方面探讨了酰胺咪唑啉季铵盐对碳钢的缓蚀性能。利用数理统计方法得出,其缓蚀效率(η)与基团极化效应参数(PEIx)和—C=C—键效应指示变量D之间符合定量线性关系η=a+b PEIx+c D(a,b,c为常数),相关系数R≥0.996。该研究成果,能为离子型缓蚀剂分子设计提供一种简便易行的新方法,为找到具有更佳缓蚀性能的新型咪唑啉缓蚀剂提供参考。
A series of water-soluble amidogen imidazolinyl quaternary ammonium salt corrosion inhibitors were synthesized from highly pure naphthenic acids. The relationship between the alkyl group connecting N（1） of the imidazoline ring and corrosion inhibition performance was investigated. Both the electronic effect method of substituent and the mass loss method for carbon steel samples were used to investigate their corrosion inhibition performance in both theoretical and experimental aspects. With the method of mathematical statistics, it was derived that the linear relationship between the corrosion inhibition efficiency r] and group polarizability effect parameter PEL and variable indicator D for --C=C-- bond was in the form of η=a＋ b PEIx＋ cD, in which a, b and c were constants, with the correlation coefficient R ≥0. 996. Such research results may provide a new and simple method for the molecular design of ionic inhibitor, as well as a reference to find new imidazoline inhibitors with better corrosion inhibition performance.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2015年第4期912-919,共8页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
湖南省教育厅项目(12k102)
湖南省高校科技创新团队支持计划资助
关键词
咪唑啉
酰胺咪唑啉季铵盐
缓蚀剂
电子效应
环烷酸
imidazoline
amidogen imidazotinyl quaternary ammonium salt~ corrosion inhibitor
electronic effect
naphthenic acid
