化工学报2013，Vol.64Issue(4)：1485-1492,8.DOI:10.3969/j.issn.0438-1157.2013.04.050
新型油酸咪唑啉缓蚀剂的合成及其性能评价
Synthesis of new oleic imidazoline corrosion inhibitors and evaluation of their performance
摘要
Abstract
Two new imidazoline corrosion inhibitors, l-(2-ammonia ethyl)-2-oleic acid imidazole (A) and l-(2-amino-thiourea ethyl)-2-oleic acid imidazole (B), were synthesized. The inhibition performance was evaluated by means of the static mass loss method and polarization curves. The mechanism of corrosion inhibition was studied by quantum chemistry calculation and molecular dynamics simulation. The results showed that both compounds A and B had good corrosion resistance in HC1 solution, and they could promote both anodic and cathodic polarization of Q235 steel simultaneously. The inhibition performance of B was better than that of A. The best experimental application concentration was 150 mg · L-1 in the range of 0 to 250 mg · L-1. Moreover, the active regions were mainly distributed on the imidazole ring and the hydrophilic chain. The head groups could efficiently displace H2O molecule, and corrosion was consequently restrained. Corrosion inhibition performance evaluated by the theoretic method agreed with the experimental results.关键词
缓蚀剂/咪唑啉/失重法/极化曲线/分子动力学模拟/量子化学Key words
inhibitor/ imidazoline/ mass loss method/ polarization curve/ molecular dynamics simulations/ quantum chemistry computation分类
矿业与冶金引用本文复制引用
吴刚,郝宁眉,陈银娟,米思奇,贾晓林,胡松青..新型油酸咪唑啉缓蚀剂的合成及其性能评价[J].化工学报,2013,64(4):1485-1492,8.基金项目
中国石油科技创新基金项目(2011D-5006-0202) （2011D-5006-0202）
山东省自然科学基金项目(ZR2012BM010). （ZR2012BM010）
