Citation: Rui Jiayao, Lyu Jinghui, Hu Hualei, Zhang Qunfeng, Wang Qingtao, Li Xiaonian. Synthesized high-silica hierarchical porous ZSM-5 and optimization of its reaction conditions in benzene alkylation with methanol[J]. Chinese Chemical Letters, ;2019, 30(3): 757-761. doi: 10.1016/j.cclet.2018.09.016 shu

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

Industrial Catalysis Institute of Zhejiang University of Technology, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Hangzhou 310032, China

lyujh@zjut.edu.cn

northtime@163.com

xnli@zjut.edu.cn

Received Date: 26 May 2018
Revised Date: 23 August 2018
Accepted Date: 20 September 2018
Available Online: 23 March 2018

Figures(11)

In our present work, the high-silica hierarchical porous ZSM-5 with appropriate Brönsted 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 N₂ physical adsorption technologies.
- ZSM-5,
- Ethylbenzene,
- Xylene,
- Optimization,
- Benzene alkylation
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