Citation: ZHAO Xiao-feng, LI Yan-chun, YUAN Ping, WANG Peng-fei, WANG Hao, DONG Mei, QIN Zhang-feng, FAN Wei-bin, WANG Jian-guo. Effect of seed number of MOR zeolites on the transalkylation reaction and the investigation of the reaction mechanism[J]. Journal of Fuel Chemistry and Technology, ;2017, 45(9): 1095-1104. shu

Effect of seed number of MOR zeolites on the transalkylation reaction and the investigation of the reaction mechanism

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author: WANG Hao, wanghao@sxicc.ac.cn
Received Date: 27 March 2017
Revised Date: 18 July 2017

Fund Project: Shanxi Scholarship Council of China 2014-102The project was supported by the National Natural Science Foundation of China (General Program) (21273263, 21273264), Shanxi Scholarship Council of China (2014-102) and Department of Human Resource and Social Security of Shanxi Provincethe National Natural Science Foundation of China (General Program) 21273264the National Natural Science Foundation of China (General Program) 21273263

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The effect of the number of crystal seeds on the physical and chemical properties and catalytic performance of the mordenite (MOR) zeolite was investigated using the transalkylation of toluene and trimethylbenzene as the probe reaction. The results show that the addition of seed crystals in the synthesis process will significantly affect the acidity, specific surface area and pore volume of the catalyst, thus affect the activity and stability of the catalyst. When the addition amount of crystal seeds is 8%, the MOR has the most B acid content, the maximum specific surface area and the pore volume, and the activity and stability of the catalyst are also the best. In addition, the mechanism of the transalkylation reaction of toluene and trimethylbenzene has been studied in detail. The results show that the transalkylation reaction in the MOR molecular sieve channels is carried out by the mechanism of bimolecular intermediates, and the intermediates, confirming the rationality of the mechanism of the bimolecular intermediates and deducing the possible reaction route.
- number of seeds,
- catalyst life,
- mordenite zeolite molecular sieve,
- transalkylation reaction,
- reaction mechanism
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