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

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英文篇名：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 英文作者：Jiayao Rui;Jinghui Lyu;Hualei Hu;Qunfeng Zhang;Qingtao Wang;Xiaonian Li;Industrial Catalysis Institute of Zhejiang University of Technology, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology; 英文关键词：ZSM-5;;Ethylbenzene;;Xylene;;Optimization;;Benzene alkylation 中文刊名：FXKB 英文刊名：中国化学快报(英文版) 机构：Industrial Catalysis Institute of Zhejiang University of Technology, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology; 出版日期：2019-03-15 出版单位：Chinese Chemical Letters 年：2019 期：v.30 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) 语种：英文; 页：FXKB201903051 页数：5 CN：03 ISSN：11-2710/O6 分类号：245-249

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.
        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.

引文

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