β/MCM-41分子筛的合成及其萘异丙基化催化性能  

SYNTHESIS OF β/MCM-41 MOLECULAR SIEVES AND ITS CATALYTIC PROPERTIES FOR NAPHTHALENE ISOPROPYLATION

作　　者：何广湘[1,2] 靳海波[2] 张瑛[1] 窦涛[1] 

机构地区：[1]中国石油大学中国石油天然气集团公司催化重点实验室,北京102249 [2]北京石油化工学院化工系,北京102617

出　　处：《石油学报（石油加工）》2009年第A02期129-133,共5页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：中国石油化工集团总公司课题(200424);北京市属高等学校人才强教深度计划项目(PHR200906139)资助

摘　　要：以通过碱处理的β分子筛作为硅铝源,以CTAB为模板剂,合成了β/MCM-41介孔-微孔复合分子筛。利用XRD、SEM、N2吸附-脱附等技术对其进行了表征,并考察了β/MCM-41复合分子筛的制备条件。采用微型固定床反应装置考察了β/MCM-41复合分子筛对萘异丙基化反应的催化性能。结果表明,优化的β/MCM-41复合分子筛制备工艺条件为:碱度2.0 mol/L,碱处理时间0.5 h,晶化温度130℃,晶化时间24 h,晶化体系pH值9.0。与ZSM-5、MOR、β、MCM-41相比较,β/MCM-41复合分子筛对萘异丙基化反应具有较好的催化性能。The β/MCM-41 meso-microporous molecular sieve composite was synthesized by using the approach in which alkali-treated zeolite β was used as silica-alumina source of mesoporous phase, and cetyltrimethyl-ammonium bromide （CTAB） as template, respectively. The products were characterized by XRD, SEM and N2 adsorption/desorption methods. The preparation conditions for /β/MCM-41 meso-microporous composite were investigated and analyzed. The β/MCM-41 meso-microporous composite catalytic performances for naphthalene isopropylation were tested in a fix-bed reactor. The results showed that the optimum preparation conditions were alkali concentration of 2.0 mol/L, alkali treatment time of 0.5 h, crystallization temperature of 130℃, crystallization time of 24 h and crystallization pH value of 9.0. Compared with ZSM-5, MOR, fl, MCM-41 catalyst, the β/MCM-41 meso-microporous composite catalyst has better catalytic performance for naphthalene isopropylation.

关 键 词：萘 异丙基化 2 6-二异丙基萘 β/MCM-41 复合分子筛 

分 类 号：TQ241[化学工程—有机化工]