离子液体在烯烃羰基化反应中的应用

Application of ionic liquids in olefin carbonylation reactions

烯烃羰基化反应是指在过渡金属催化剂存在条件下,将CO或者CO_(2)分子以羰基的形式插入到烯烃与亲核试剂(H_(2)、醇、水)中,合成具有更高附加值的化学品的过程。该过程通常是在均相体系中进行,增加了催化剂分离成本。利用离子液体(IL)蒸气压极低和极性可调的特点,能够简化羰基化反应中催化剂与原料及产物的分离过程,是一种绿色、可循环的催化剂分离和回收方式。综述了IL在烯烃羰基化反应中的研究进展,并对IL在烯烃羰基化反应中存在的问题及未来发展方向进行了探讨。

Carbonylation of olefins is a process in which CO or CO_(2) molecules in the form of carbonyl are inserted into olefins and nucleophiles(H_(2),alcohol,water)in the presence of transition metal catalysts to synthesize chemicals with higher added value.This process is usually carried out in a homogeneous system,which increases the cost of catalyst separation.Based on the characteristics of extremely low vapor pressure and adjustable polarity,ionic liquid(IL)can be used to simplify the separation process of catalysts from raw materials and products in carbonylation reactions,which is a green and recyclable method for catalyst separation and recovery.The research progress of ILs in the carbonylation reaction of olefin is reviewed,and the existing problems and future development directions of ILs in the carbonylation reaction of olefin are discussed.