Cao Shuyun, Liu Dan, Ding Hui, Lu Hui, Gui Jianzhou
State Key Laboratory of Separation Membranes and Membrane Processes & School of Textile Science and Engineering, Tiangong University, Tianjin 300387, PR China; Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, PR China.
Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, PR China; University of South Africa, College of Science, Engineering and Technology, Nanotechnology and Water Sustainability Research Unit, Florida Science Campus 1710, South Africa.
J Colloid Interface Sci. 2020 Nov 1;579:315-329. doi: 10.1016/j.jcis.2020.04.019. Epub 2020 May 28.
The inhibition performance of ionic liquids, abbreviated as [(CH)COOHMIm][HSO], [(CH)COOHMIm][HSO], and [(CH)SOHMIm][HSO] was investigated for carbon steel in 0.5 M HCl solution. Results indicated that these ionic liquids could act as effective inhibitors by adsorption onto the steel surface, and the inhibition efficiency increases with cation alkyl chain length and concentration up to a limit. The inhibition efficiency of a sulfonate-type ionic liquid with a longer alkyl chain is higher than those of the carboxylate-type ionic liquids. Besides, the order of inhibition efficiency was verified by both computational calculation and electrochemical experimental observations.
研究了离子液体[（CH）COOHMIm][HSO]、[（CH）COOHMIm][HSO]和[（CH）SOHMIm][HSO]（简称为ILs）在0.5 M HCl溶液中对碳钢的缓蚀性能。结果表明，这些离子液体可通过吸附在钢表面起到有效的缓蚀作用，缓蚀效率随阳离子烷基链长度和浓度的增加而增加，直至达到极限。具有较长烷基链的磺酸盐型离子液体的缓蚀效率高于羧酸盐型离子液体。此外，通过计算和电化学实验观察验证了缓蚀效率的顺序。
