Efficient synthesis of fully crystalline ZSM-5 zeolite catalyst by microwave method and its catalytic performance

被引：0

作者：

Wang D. ^{[1
]}

Sun H. ^{[1
]}

Xue M. ^{[1
]}

Wang Y. ^{[1
]}

Liu W. ^{[1
]}

Yang W. ^{[1
]}

机构：

[1] State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Sinopec Shanghai Research Institute of Petrochemical Technology Co., Ltd., Shanghai

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2023年 / 42卷 / 07期

关键词：

benzene; catalyst; ethylbenzene; fully crystalline; microwave radiation method; molecular sieves;

D O I：

10.16085/j.issn.1000-6613.2023-0618

中图分类号：

学科分类号：

摘要：

Fully crystalline ZSM-5 zeolite catalyst with 100% active components was efficiently synthesized by the microwave radiation method, and the samples were characterized by X-ray diffraction (XRD), scanning/transmission electron microscopy (SEM and TEM), solid-state nuclear magnetic resonance (NMR), specific surface area and pore size analysis, and mechanical strength measurement. The results showed that the relative crystallinity of the obtained catalyst reached 100% after 8h crystallization under the optimized synthesis condition and heated by microwave irradiation. And the crystal morphology of the obtained ZSM-5 zeolite catalyst was regular and 97% of the aluminum atoms were in tetrahedral coordination. The mechanical strength of the catalyst was as high as 110N/cm, which fully meets the industrial application requirements. Under the process conditions close to the industrial ones, the fully crystalline ZSM-5 catalyst exhibited excellent catalytic performance and long-term stability in the gas-phase alkylation reaction of benzene and ethylene to ethylbenzene. The ethylene conversion rate was about 100% and the ethide selectivity was higher than 99.6%, while the key impurity xylene content was about 450μL/L. © 2023 Chemical Industry Press. All rights reserved.

引用

页码：3582 / 3588

页数：6

共 14 条

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