Alkylation of benzene and dichloromethane to diphenylmethane with acidic ionic liquids

摘要

Liquid-phase alkylation of benzene and dichloromethane as alkylating agent to diphenylmethane with acidic ionic liquids such as Et3NHCl-AlCl3,Et3NHCl-FeCl3;Et3NHCl-ZnCl2,Et3NHCl-CuCl2,Et3NHCl-SnCl2 and Et3NHCl-SnCl4 was investigated.The results showed that Et3NHCl-AlCl3 proved to be superior catalytic activity to other five ionic liquids with the conversion of 83.8% and the selectivity of 86.3% at a moderate temperature.Meanwhile,the influence of reaction conditions on the reaction,the reaction kinetics and the usability of the catalyst were explored.