HMCM-49/Hβ分子筛在多异丙苯与苯烷基转移中的催化性能

Catalytic performance of HMCM-49/Hβ molecular sieve in the transalkylation reaction bewteen benzene and multi-isopropyl benzene

研究了不同催化剂对烷基转移反应的影响,并进行XRD、NH3-TPD、比表面积和孔径表征,结果表明,HMCM-49/Hβ分子筛催化剂用于多异丙苯与苯烷基转移较为适宜。考察了温度和原料对多异丙苯烷基转移的影响,筛选出的HMCM-49/Hβ分子筛催化剂在190～200℃,总液空速为1.4～1.6h-1条件下,二异丙苯转化率达到50%,三异丙苯转化率达到40%。

The influences of different catalysts on the transalkylation reaction are studied with XRD, NH3-TPD and BET characterization. The results show that HMCM-49/Hβ molecular sieve is more suitable for the transalkylation reaction. We analyze the effects of temperature and feeding liquids on the HMCM-49/Hβcatalyst for the transalkylation reaction, and find that the conversion rates of diisopropyl benzene and triisopropyl benzene can reached 50% and 40%, respectively, under the conditions of 190-200℃ and total 1.4-1.6 h 1 WHSV.