室温离子液体中水溶性铑膦配合物催化1-己烯氢甲酰化反应的研究  

Hydroformylation of 1-Hexene with Water-soluble Phosphine- rhodium Complexes in Room Temperature Ionic Liquids

作　　者：彭庆蓉[1] 王宇[1] 邓昌晞[1] 汪小强[1] 袁友珠[1] 

机构地区：[1]厦门大学化学系固体表面物理化学国家重点实验室,福建厦门361005

出　　处：《分子催化》2004年第5期376-380,共5页Journal of Molecular Catalysis(China)

基　　金：国家重点基础发展规划(G2000048008);国家自然科学基金(20021002)资助项目.

摘　　要：研究了水溶性膦配体铑配合物在若干离子液体中的1 己烯氢甲酰化反应性能.通过改变离子液体的阴阳离子结构,可使水溶性TPPTS 铑配合物在离子液体中表现出较高的1 己烯氢甲酰化反应活性和选择性;在[BMI]BF4离子液体中加入适量的水,可提高TPPTS 铑配合物的催化活性;在[BMI]BF4离子液体中,水/有机两亲性膦配体与铑形成的配合物,反应后催化剂与产物自动分层,实现催化剂的循环使用.本文结果表明,水溶性膦配体铑配合物的催化活性与其在离子液体中的溶解度密切相关.This paper studied the catalytic performances of water-soluble phosphine-rhodium complexes in room temperature ionic liquids for 1-hexene hydroformylation. The higher reaction rate and normal aldehyde selectivity were obtained through choosing the proper anionic and cationic groups of the ionic liquids. Moreover, the catalytic activity of TPPTS-rhodium complex could be increased by increasing the solubility of TPPTS in the ionic liquids like [BMI]BF_4 and also by the addition of small amount of water into the [BMI]BF_4 ionic liquid. The recycling of the catalysts based amphiphilic phosphines was achieved in the [BMI]BF_4 ionic liquid without significant loss in the catalytic activity due to the easy phase separation. The experimental results inferred that the solubility of water-soluble rhodium complexes was key to obtain the reasonable catalytic activity.

关 键 词：离子液体 铑膦配合物 氢甲酰化反应 1-己烯 

分 类 号：O643.32[理学—物理化学]