Alkylation of Benzene with Propylene Catalyzed by Ionic Liquids  

作　　者：Sun Xuewen Zhao Suoqi 

机构地区：[1]State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beoing 102249, China

出　　处：《Petroleum Science》2006年第3期60-64,共5页石油科学（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(No.20276038);Beijing Natural Science Foundation(No.2052010);the Venture Foundation of Petrochina.

摘　　要：The alkylation of benzene with propylene catalyzed by ionic liquids to obtain cumene was investigated. Propylene conversion and cumene selectivity under mild reaction conditions were improved greatly after the ionic liquid was modified with HC1. Under the conditions of 20℃, 0.1MPa, 5 rain of reaction time, and a molar ratio of benzene to propylene of 10：1, propylene conversion increased from 83.6% to 100%, and cumene selectivity increased from 90.86% to 98.47%. In addition, it was found that the reaction could be carried out in two different stages so as to obtain a better result. At the first stage, the key reaction was alkylation and a higher propylene conversion was obtained at a lower temperature： At the second stage, the key reaction was transalkylation and a higher temperature was used to improve cumene selectivity. The reaction temperature, pressure and the amount of catalyst used in this work were lower than those used in traditional alkylation processes.The alkylation of benzene with propylene catalyzed by ionic liquids to obtain cumene was investigated. Propylene conversion and cumene selectivity under mild reaction conditions were improved greatly after the ionic liquid was modified with HC1. Under the conditions of 20℃, 0.1MPa, 5 rain of reaction time, and a molar ratio of benzene to propylene of 10：1, propylene conversion increased from 83.6% to 100%, and cumene selectivity increased from 90.86% to 98.47%. In addition, it was found that the reaction could be carried out in two different stages so as to obtain a better result. At the first stage, the key reaction was alkylation and a higher propylene conversion was obtained at a lower temperature： At the second stage, the key reaction was transalkylation and a higher temperature was used to improve cumene selectivity. The reaction temperature, pressure and the amount of catalyst used in this work were lower than those used in traditional alkylation processes.

关 键 词：ALKYLATION BENZENE PROPYLENE ionic liquid HCL 

分 类 号：TE624.4[石油与天然气工程—油气加工工程]