Methane catalytic combustion over flame spray pyrolysis-synthesized Pd-Pt/CeO<sub>2</sub> catalyst

WU Linyuan; WANG Yi; CHEN Zhaoying; TIAN Qingling; WANG Linru; FU Zijun; ZHAO Ning; WANG Xiaobo; HUANG Xin

doi:10.19906/j.cnki.JFCT.2023083

Volume 52 Issue 5

May 2024

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Article Navigation > Journal of Fuel Chemistry and Technology > 2024 > 52(5): 725-734

WU Linyuan, WANG Yi, CHEN Zhaoying, TIAN Qingling, WANG Linru, FU Zijun, ZHAO Ning, WANG Xiaobo, HUANG Xin. Methane catalytic combustion over flame spray pyrolysis-synthesized Pd-Pt/CeO2 catalyst[J]. Journal of Fuel Chemistry and Technology, 2024, 52(5): 725-734. doi: 10.19906/j.cnki.JFCT.2023083

Citation:

WU Linyuan, WANG Yi, CHEN Zhaoying, TIAN Qingling, WANG Linru, FU Zijun, ZHAO Ning, WANG Xiaobo, HUANG Xin. Methane catalytic combustion over flame spray pyrolysis-synthesized Pd-Pt/CeO₂ catalyst[J]. Journal of Fuel Chemistry and Technology, 2024, 52(5): 725-734. doi: 10.19906/j.cnki.JFCT.2023083

Citation:

WU Linyuan, WANG Yi, CHEN Zhaoying, TIAN Qingling, WANG Linru, FU Zijun, ZHAO Ning, WANG Xiaobo, HUANG Xin. Methane catalytic combustion over flame spray pyrolysis-synthesized Pd-Pt/CeO₂ catalyst[J]. Journal of Fuel Chemistry and Technology, 2024, 52(5): 725-734. doi: 10.19906/j.cnki.JFCT.2023083

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Methane catalytic combustion over flame spray pyrolysis-synthesized Pd-Pt/CeO₂ catalyst

doi: 10.19906/j.cnki.JFCT.2023083

WU Linyuan^1
,,
WANG Yi^2
,,
CHEN Zhaoying^{3, 4
,},
TIAN Qingling^{3, 4
,},
WANG Linru^1
,,
FU Zijun^1
,,
ZHAO Ning^5
,,
WANG Xiaobo^{1
,
,},
HUANG Xin^{1
,
,}

1.
College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2.
Shanxi Lu’an Chemical Group Co., Ltd., Changzhi 046200, China
3.
State Key Laboratory of Coal and CBM Co-mining, Jincheng 048012, China
4.
Jinneng Holding Equipment Manufacturing Group Co., Ltd., Jincheng 048006, China
5.
Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China

Funds: The project was supported by State Key Laboratory of Coal and CBM Co-mining (2022KF12), Shanxi Province Science and Technology Achievement Transformation Guidance Special Project (202204021301010), Shanxi Province Science and Technology Innovation Talent Team (202204051002025), National Natural Science Foundation of China (52004177).

Received Date: 2023-11-27
Accepted Date: 2023-12-11
Rev Recd Date: 2023-12-11

Available Online: 2024-01-18

Publish Date: 2024-05-01

Abstract

Abstract

Flame spray pyrolysis (FSP) is a versatile, rapid, and scalable preparation technique for the nanocatalysts. CeO₂ and Pt-CeO₂ carriers, Pd-Pt-CeO₂ catalyst were synthesized by flame spray pyrolysis, and then Pd-Pt bimetallic catalysts were prepared by impregnation method, and as-obtained Pd-Pt catalysts were tested in the methane combustion. The physicochemical properties of the catalysts were characterized by ICP, XRD, TEM, BET, H₂-TPR, XPS, and Raman. TEM results showed that Pd and Pt species were highly dispersed in CeO₂ carriers in Pd-Pt/CeO₂ catalysts. Compared with the Pd-Pt-CeO₂(OS-FSP) catalyst prepared by one-step flame spray pyrolysis, the catalytic activity of the Pd-Pt/CeO₂(0.25)-WI prepared by co-impregnation was higher, with its t₅₀ reduced by 60 ℃, and no deactivation was seen for 60 h. It is attributed to the fact that the Pd-Pt/CeO₂(0.25)-WI catalyst has a higher molar ratio of Pd⁰/Pd²⁺ and Ce³⁺/Ce⁴⁺ on the surface of the catalyst and more lattice oxygen, resulting in an excellent performance during the methane combustion.
- methane combustion,
- flame spray pyrolysis,
- impregnation,
- palladium,
- stability

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References(39)

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