Citation: ZHANG Ying, LI Jun-Wei, WU Jing-Wen, XU Bo-Lian. Ethylbenzene Disproportionation over ZSM-5 Modified by 3, 5-Dimethyl Phenylmagnesium Bromide[J]. Chinese Journal of Inorganic Chemistry, ;2017, 33(12): 2351-2356. doi: 10.11862/CJIC.2017.260 shu

Ethylbenzene Disproportionation over ZSM-5 Modified by 3, 5-Dimethyl Phenylmagnesium Bromide

1.
The Electric Power Science Research Institute of Guizhou Power Grid Co., Ltd, Guiyang 550002, China
2.
Jiangsu Key Laboratory of Vehicle Emissions Control, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China

Corresponding author: XU Bo-Lian, xubolian@nju.edu.cn
Received Date: 9 July 2017
Revised Date: 27 September 2017

Figures(7)

A new kind of ZSM-5 surface modification method was developed by using a large organic molecule Grignard reagent (3, 5-dimethyl phenylmagnesium bromide). Their shape selective catalytic properties were studied by ethylbenzene (EB) disproportionation reaction test. The pore structure and surface acid properties were also investigated to understand the shape selectivity enhancement mechanism. Most of the MgO was deposited on external surface due to the big molecule size of 3, 5-dimethyl phenylmagnesium bromide. The elimination of external surface acid sites by Grignard reagent is the main reason of its high p-diethylbenzene (p-DEB) selectivity in EB disproportionation reaction. The results of probe molecule adsorption kinetics experiment indicate that this modification method does not change the pore size of ZSM-5.
- ZSM-5,
- surface acidic site,
- ethylbenzene disproportionation,
- shape selective catalysis
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沈阳化工大学材料科学与工程学院沈阳 110142