利用交流阻抗、极化曲线和腐蚀失重法,在H2S溶液中研究 了咪唑啉分子结构的变化与其缓蚀性能间的关系.结果表明:位于中心咪唑环1,2位置上憎水 和亲水支链长短结构的变化,极性官能团的存在对其缓蚀性能均具有较大的影响.当憎水支链 碳原子为7和17时,化合物具有较好的缓蚀性能;憎水支链中双键的存在,可有效提高化合物的 缓蚀性能,而羟基基团的引入,对其缓蚀性能却没有明显的改进.当亲水支链中含有两个氨基 乙撑基团时,化合物缓蚀效果最好,硫脲基团的存在,也可有效提高咪唑啉化合物的缓蚀性能. 咪唑环本身化学性质的改变,虽可改善其缓蚀性能,但因其水溶性较差不易用作缓蚀剂.
The relationship between molecular structure of imi dazoline derivatives and inhibition performance was investigated by weight loss me thod，potentiodynamic polarization curve and electrochemical impedance spectrosc opy (EIS) in H2S solutions.Result show that the side chains，which occupies 1 or 2 sites on the central five membered ring and has hydrophobic or hydrophilic properties，and some active functional groups have an important effect on the in hibition performance of imidazoline derivatives.Compounds studied have the best in hibitive efficiency when the hydrophobic side chain contains either seven or sev enteen carbon atoms，and the best inhibitive efficiency when the hydrophilic sid e chain contains two aminoethylenes.The double bond in the hydrophobic side cha in and the thiourea group in the hydrophilic side chain can effectively enhance inhibitive performance，nor can the hydroxyl group in the hydrophobic chain.Alth ough the inhibitive performance of imidazoline derivates can be improved through changing the central imidazoline ring chemistry，they do not suit to use as in hibitor because of the poor solubility.
参考文献
| [1] |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%