Study on different synthesis methods of ZnxCe2-yZryO4/SAPO-34 catalyst and its catalytic performance in syngas to low-carbon olefins

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

Volume 48 Issue 5

May 2020

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Article Navigation > Journal of Fuel Chemistry and Technology > 2020 > 48(5): 594-600

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 ZnxCe2-yZryO4/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.

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.

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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 Mei¹,
QIN Zhang-feng¹,
FAN Wei-bin¹,
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

Funds:

the National Natural Science Foundation of China 21802157

the National Natural Science Foundation of China 21773281

the Natural Science Foundation of Shanxi Province of China 201901D211581

Received Date: 2020-01-19
Rev Recd Date: 2020-03-16

Available Online: 2021-01-23

Publish Date: 2020-05-10

Abstract

Abstract

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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References(17)

References

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