文献类型：期刊文献

英文题名：Three different types of heterocycle of nitrogen-containing alkaline ionic liquids treatment of acid oil to remove naphthenic acids

作者：Duan, Jiyun[1];Sun, Yu[1];Shi, Li[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2013

卷号：212

起止页码：180

外文期刊名：CATALYSIS TODAY

收录：;EI(收录号：20132916504643);WOS:【SCI-EXPANDED(收录号:WOS:000321507800028)】；

语种：英文

外文关键词：Ionic liquids; Naphthenic acid; Deacidification; 1-Alkyl-3-methylimidazolium bromide; N-alkylpyridinium bromide; 1-Alkyl-3-methylimidazolium imidazolide

摘要：Ionic liquids had enormous potential for industrial use as environmental friendly chemicals. A green and effective deacidification method was found based on ionic liquids. N-alkylpyridinium bromide ([APy]Br), 1-alkyl-3-methylimidazolium bromide ([AMIm]Br) and 1-alkyl-3-methylimidazolium imidazolide ([AMIm]Im) were used to remove naphthenic acids from acid oil. The performance of deacidification followed the order [APy]Br < [AMIm]Br < [AMIm]Im. The stronger alkalinity of ionic liquids was, the higher deacidification would be. The growth of alkyl chain length was also beneficial to get high deacidification. The deacidification mechanism was that liquid clathrate could form due to interaction between the ionic liquids and pi-bond in naphthenic acids through pi-pi interaction. When the reagent/oil ratio of [OMIm]Im (1-octyl-3-methylimidazolium imidazolide)/oil was 0.008, the deacidification rate could be reached 100%. The preliminary results reveal that the process consumes less energy, saves time and produces less pollution to environment. (C) 2012 Elsevier B.V. All rights reserved.