文献类型：期刊文献

中文题名：苯液相烷基化的HY分子筛催化剂的改性

英文题名：Modified HY Zeolite Catalyst for Liquid Alkylation of Benzene with Ethylene

作者：徐佩若[1];朱志华[1];戴迎春[2];包平[2];季桂南[2]

机构：[1]华东化工学院化学工程系,上海200237;[2]联合化学反应工程研究所华化分所,上海200237

年份：1993

卷号：22

期号：2

起止页码：83

中文期刊名：石油化工

外文期刊名：Petrochemical Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心1992】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：HY分子筛;烷基化;苯;乙烯;催化剂

外文关键词：HY zeolite, alkylation, benzene, ethylene, catalyst

摘要：在改性的HY分子筛催化剂上进行苯与乙烯的液相烷基化反应,研究了焙烧温度和水蒸汽处理条件等对催化剂性能的影响。用TPD、IR、XRD、比表面和孔径分布测定等方法研究了催化剂的晶相结构、表面酸性质和催化活性之间的一些规律。
Modified zeolites were studied by BET method, XRD, TPD and IR to characterize their macro-structure, crystal structure and surface acidic properties. The results were correlated with that of liquid alkylation of benzene with ethylene.When HY was modified by hydrothermal treatment, the crystal type remained unchanged, the skeleton Si/Al ratio increased, the crystallinity lowered, the unit cell constant decreased, the pore size increased and the surface acidic properties changed.The activity of the modified HY zeolite during alkylation may be correlated to the change of catalyst surface acidic properties. As the number of stronger acid sites increases, the conversion of C_2H_4 also increases. Stronger Bronsted acid sites are activation centers of liquid alkylation reaction of benzene with ethylene.