Synthesized high-silica hierarchical porous ZSM-5 and optimization of its reaction conditions in benzene alkylation with methanol

作     者：Jiayao Rui Jinghui Lyu Hualei Hu Qunfeng Zhang Qingtao Wang Xiaonian Li 

作者机构：Industrial Catalysis Institute of Zhejiang University of Technology State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2019年第30卷第3期

页      面：757-761页

核心收录：

学科分类：07[理学] 0703[理学-化学] 

基　　金：financial support from the National Natural Science Foundation of China(Nos. NSFC-21476207 and NSFC21506189) National Basic Research Program of China (973 Program, No. 2011CB710800) 

主　　题：ZSM-5 Ethylbenzene Xylene Optimization Benzene alkylation 

摘      要：In our present work, the high-silica hierarchical porous ZSM-5 with appropriate Br(o|¨)nsted acidity and hierarchical porous structure was synthesized by sol-gel method for continuously catalytic conversion of benzene alkylation with methanol to xylene. The effects of temperature, pressure, benzene/methanol molar ratio and weight hour space velocity(WHSV) on the catalytic performance of the catalyst were investigated as well. As a result, the high-silica hierarchical porous ZSM-5 showed great performance as the yield of xylene was up to 41.1% under the optimum reaction conditions(500 ℃,0.1 MPa,M_(benzene)/M_(methanol)= 1:1.5 and WHSV=4 h 1), while the selectivity to by-product, ethylbenzene, was well suppressed(below 0.1%). In addition, the catalyst structure and properties were characterized by the means of XRD, IR, TPD,SEM, TEM and N_2 physical adsorption technologies.