Citation: LUO Yao-ya, WANG Sen, GUO Shu-jia, YUAN Kai, WANG Hao, DONG Mei, QIN Zhang-feng, FAN Wei-bin, WANG Jian-guo. Study on different synthesis methods of Zn_xCe_2-yZr_yO₄/SAPO-34 catalyst and its catalytic performance in syngas to low-carbon olefins[J]. Journal of Fuel Chemistry and Technology, ;2020, 48(5): 594-600. shu

Study on different synthesis methods of Zn_xCe_2-yZr_yO₄/SAPO-34 catalyst and its catalytic performance in syngas to low-carbon olefins

LUO Yao-ya ^1,2 ,
WANG Sen ^1,, ,
GUO Shu-jia ^1,2 ,
YUAN Kai ^1,2 ,
WANG Hao ^1,, ,
DONG Mei ¹ ,
QIN Zhang-feng ¹ ,
FAN Wei-bin ¹ ,
WANG Jian-guo ^1,2

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 Sen, wangsen@sxicc.ac.cn. WANG Hao, wanghao@sxicc.ac.cn
Received Date: 19 January 2020
Revised Date: 16 March 2020

Fund Project: The project was supported by the National Natural Science Foundation of China (21802157, 21773281) and the Natural Science Foundation of Shanxi Province of China (201901D211581)the National Natural Science Foundation of China 21773281the National Natural Science Foundation of China 21802157the Natural Science Foundation of Shanxi Province of China 201901D211581

Figures(7)

A series of Zn_xCe_2-yZr_yO₄ metal oxides were synthesized by sol gel method, hydrothermal method and co-precipitation method respectively and characterized by XRD, BET, HRTEM, CO-TPD, Raman and XPS. The effects of the synthesis method on the morphology, grain size and oxygen vacancy concentration and the catalytic performance in syngas to low-carbon olefin reaction of the Zn_xCe_2-yZr_yO₄ catalysts were investigated. The results show that the shape, exposed crystal surface, grain size and surface oxygen vacancy concentration of Zn_xCe_2-yZr_yO₄ solid solution are strongly dependent on the synthesis method. Under the reaction conditions of 300 ℃ and 1.0 MPa, the dual-functional catalysts of Zn_xCe_2-yZr_yO₄/SAPO-34 prepared by sol-gel method have the highest low-carbon olefin (C_2-4⁼) selectivity (79.5%), while the selectivities of methane and CO₂ are only 5.5% and 10.7%, respectively. Here the direct conversion of syngas to low-carbon olefins are realized at low temperature and pressure and the formation of methane and CO₂ is greatly reduced.
- syngas to olefin,
- sol-gel method,
- hydrothermal method,
- co-precipitation method,
- low temperature and pressure
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Study on different synthesis methods of ZnxCe2-yZryO4/SAPO-34 catalyst and its catalytic performance in syngas to low-carbon olefins

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通讯作者: 陈斌, bchen63@163.com

Study on different synthesis methods of Zn_xCe_2-yZr_yO₄/SAPO-34 catalyst and its catalytic performance in syngas to low-carbon olefins