Direct synthesis of LPG from syngas over Cu modified FeMg@SiO<sub>2</sub> nano-level core@shell catalyst

ZHANG Pei-pei; ATCHIMARUNGSRI Thachapan

doi:10.1016/S1872-5813(22)60064-1

Volume 51 Issue 5

May 2023

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Article Navigation > Journal of Fuel Chemistry and Technology > 2023 > 51(5): 656-664

ZHANG Pei-pei, ATCHIMARUNGSRI Thachapan. Direct synthesis of LPG from syngas over Cu modified FeMg@SiO2 nano-level core@shell catalyst[J]. Journal of Fuel Chemistry and Technology, 2023, 51(5): 656-664. doi: 10.1016/S1872-5813(22)60064-1

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ZHANG Pei-pei, ATCHIMARUNGSRI Thachapan. Direct synthesis of LPG from syngas over Cu modified FeMg@SiO₂ nano-level core@shell catalyst[J]. Journal of Fuel Chemistry and Technology, 2023, 51(5): 656-664. doi: 10.1016/S1872-5813(22)60064-1

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Direct synthesis of LPG from syngas over Cu modified FeMg@SiO₂ nano-level core@shell catalyst

doi: 10.1016/S1872-5813(22)60064-1

ZHANG Pei-pei^1
,,
ATCHIMARUNGSRI Thachapan^{2, 3
,
,}

1.
CNOOC Institute of Chemicals & Advanced Materials (Beijing) Co., Ltd., Beijing 102200, China
2.
State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry & Chemical Engineering, Ningxia University, Yinchuan 750021, China
3.
Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand

Funds: The project was supported by the CCUS Project of China National Offshore Oil Corporation (KJGG-2022-12-CCUS-030401)

More Information

Corresponding author: Tel: 0951-2062323, E-mail: thachapan@126.com
Received Date: 2022-06-08
Accepted Date: 2022-09-14
Rev Recd Date: 2022-07-26

Available Online: 2022-10-17

Publish Date: 2023-05-15

Abstract

Abstract

Direct synthesis of liquefied petroleum gas from syngas via Fischer-Tropsch synthesis route was systematically investigated over a nano-level core@shell catalyst. We introduced an incorporation of FeMg catalyst into mesoporous silica shell, with a further modification of Cu particles on the silica surface. The modified Cu/FeMg@SiO₂ nano core-shell catalysts were synthesized by the combination of co-precipitation, modified sol-gel and facile impregnation methods. The as-synthesized catalysts’ physicochemical property was characterized by XRD, TEM, N₂ adsorption-desorption, H₂-TPR, XPS and CO₂-TPD techniques. The catalytic performance of Cu/FeMg@SiO₂ catalyst shows a high CO conversion of 96.6%, rather low CO₂ selectivity of 21.9% and considerable LPG selectivity of 37.9%. The catalytic results indicate that the SiO₂ shell restrains the formation of CH₄ and contributes to increasing long-chain products. Meanwhile, the enhanced CO conversion of Cu/FeMg@SiO₂ was ascribed to the active metal Cu dispersed on SiO₂ shell, which also promoted olefin hydrogenation and cracking of C₅₊ hydrocarbons products. The proposed catalyst preparation method will provide a new strategy for the synthesis of nano level catalyst with combinations of metal- and zeolite-based catalyst.
- liquefied petroleum gas,
- core/shell,
- Fischer-Tropsch synthesis,
- mesoporous SiO₂ shell

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References(35)

References

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