文献类型：期刊文献

中文题名：在Y型分子筛上苯的液相烷基化

英文题名：STUDY OF LIQUID ALKYLATION OF BENZENE WITH ETHYLENE ON MODIFIED HY-ZEOLITE CATALYST

作者：徐佩若[1];朱志华[1];戴迎春[1]

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

年份：1992

卷号：8

期号：3

起止页码：269

中文期刊名：化学反应工程与工艺

外文期刊名：Chemical Reaction Engineering and 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：沸石;烷基化;苯;乙烯;分子筛

外文关键词：Zeolite;;Alkylation;;Benzene;;Ethylene

摘要：用经过处理的 HY 分子筛为催化剂,进行苯与乙烯的液相烷基化反应,研究了反应条件对催化性能的影响。用引入周期表中ⅡA 族和第一过渡周期金属阳离子对 HY 分子筛进行改性,采用TPD 技术测定催化剂的表面酸性质,探讨了催化剂表面酸性质和催化性能的关系。
With modified HY-zeolites as a solid acid catalysts,the liquid alkylation of benzene with ethylene has been studied.At the conditions of reaction temperature 167℃,pressure 3.0 MPa, molar ratio of benzene to ethylene 13.5 and space velocity of ethylene 2.5g C_2H_4/g Cat·h,the conversion of ethylene is 98.7%,the selectivity and the yield of ethylbenzene are 92.6% and 91. 4%,respectively. After introducing various metal cations,the surface acidity of modified HY-zeolites has been determined by TPD technique with NH_3.The experimental results showed that there were two acid sites of different acid strength on the catalyst surface.the various metal cations have a great in- fluence on the acidity of strong acid sites especially.The catalytic activities increase with increasing the acidity of strong acid sites on modified HY-zeolites.