液相烷基化制异丙苯MP-01催化剂的性能  

Performance of MP-01 Catalyst for Cumene by Liquid Phase Alkylation

作　　者：周斌[1] 高焕新[1] 魏一伦[1] 方华[1] 顾瑞芳[1] 

机构地区：[1]中国石油化工股份有限公司上海石油化工研究院,上海201208

出　　处：《化学反应工程与工艺》2009年第2期148-152,共5页Chemical Reaction Engineering and Technology

基　　金：973项目(2009CB623505)

摘　　要：研究了反应温度、反应时间、丙烯空速和苯烯比等工艺参数对催化剂MP-01反应性能的影响。结果表明,170℃以下,反应温度和丙烯转化率存在线性关系,温度越高,反应速率越快,丙烯转化率越高;降低丙烯空速,丙烯转化率提高;苯烯比和异丙苯选择性存在线性关系,苯烯比越高,异丙苯的选择性越高;在苯烯比为2.0～8.0,随苯烯比的提高,丙烯转化率先降低然后再升高,丙烯转化率随反应时间延长而下降。产物中正丙苯含量和反应温度成正比,温度越高,生成正丙苯的速率越快,生成量越多。生成异丙苯和正丙苯的活化能分别为26 kJ/mol和42 kJ/mol,因此高温有利于正丙苯的生成。Liquid phase alkylation of benzene with propylene catalyzed by MP-01 catalyst was studied and the effects of various parameters, such as reaction temperature, reaction time, propylene weight hourly space velocity （WHSV） and molar ratio of benzene to propylene, on the performance of MP-01 catalyst were investigated. The results showed that a linear relationship between reaction temperature and conversion of propylene was present. High reaction temperature could speed up the alkylation and improve conversion of propylene when reaction temperature was below 170 ℃. There was a linear relationship between molar ratio of benzene to propylene and selectivity of cumene, and the higher the molar ratio of benzene to propylene, the higher the selectivity of cumene would be. The conversion of propylene increased with the decrease of WHSV of propylene. The conversion of propylene first decreased then increased gradually with the increase of molar ratio of benzene to propylene from 2.0 to 8.0, while decreased with extension to reaction time due to deactivation of catalyst. The content of n-propylbenzene （NPB） was in direct ratio with reaction temperature, and the higher the reaction temperature was, the more quickly the NPB was produced. The activation energies of cumene and NPB are 26 kJ/mol and 42 kJ/mol respectively, and high temperature is in favor of the production of NPB.

关 键 词：催化剂 异丙苯 烷基化 丙烯转化率 

分 类 号：TQ032.41[化学工程]