BrФnsted-Lewis双酸性离子液体的合成与应用  

Synthesis and application of BrФnsted-Lewis acidic ionic liquids

作　　者：王金龙[1] 何志强[1] 吴业帆[1] 方云[1] 

机构地区：[1]江南大学化学与材料工程学院食品胶体与生物技术教育部重点实验室,江苏无锡214122

出　　处：《化工进展》2012年第11期2460-2464,2510,共6页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(21276113);江苏省精细石油化工重点实验室开放基金(KF0903)项目

摘　　要：BrФnsted-Lewis双酸性离子液体同时具备B酸性和L酸性,是融合双酸性固体酸与离子液体的特征发展起来的一类新型催化剂。本文综述了近年来B-L双酸性离子液体的合成、表征及催化剂应用等方面的进展,在此基础上,总结出B-L双酸性离子液体的三个特征。其一,利用一种催化剂就可以催化分别需要B酸和L酸催化的分步反应,使反应一锅化,简洁可控。其二,B酸性和L酸性之间存在相互增强的协同作用,使其具有更好的催化性能,或可提高反应转化率或产物选择性。其三,液体催化剂在传质和扩散等方面均优于双酸性固体酸。上述特征使B-L双酸性离子液体替代并超越传统酸性催化剂成为可能,在工业应用中显示良好的发展前景。BrФnsted-Lewis acidic ionic liquids are a novel type of catalysts which combine the characters of the BrФnsted-Lewis solid acids and the ionic liquids.Three characteristics of the B-L acidic ionic liquids are summarized in this paper based on the advance of synthetic route,characterization methods and applications of them nowadays.First,the B-L acidic ionic liquids make it possible that a step-by-step reaction is completed in one pot,in which B acid and L acid were added separately in different steps.Furthermore,a synergetic effect of B and L acid sites enhances the catalytic performance,which makes the B-L acidic ionic liquids raise the substrate conversion or product selectivity.The last but not the least,the B-L acidic ionic liquids have better performance in mass transfer and diffusion than B-L solid acids.These above features make the B-L acidic ionic liquids become a competitor of traditional acid catalysts,which reveals that the B-L acidic ionic liquids have good development prospects in industrial catalysis field.

关 键 词：离子液体 BrФnsted-Lewis双酸性离子液体 催化剂 

分 类 号：O645.4[理学—物理化学]