Ti doped CeO<sub>2</sub> nanosheets supported Pd catalyst for alcohol oxidation: Catalysis of interfacial sites

LEI Li-jun; FAN Wei; HOU Feng-xiao; WANG Yue-qing; SUN Chuan; ZHANG Yi

doi:10.1016/S1872-5813(23)60375-5

Volume 51 Issue 7

Jul. 2023

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Article Navigation > Journal of Fuel Chemistry and Technology > 2023 > 51(7): 1007-1017

LEI Li-jun, FAN Wei, HOU Feng-xiao, WANG Yue-qing, SUN Chuan, ZHANG Yi. Ti doped CeO2 nanosheets supported Pd catalyst for alcohol oxidation: Catalysis of interfacial sites[J]. Journal of Fuel Chemistry and Technology, 2023, 51(7): 1007-1017. doi: 10.1016/S1872-5813(23)60375-5

Citation:

LEI Li-jun, FAN Wei, HOU Feng-xiao, WANG Yue-qing, SUN Chuan, ZHANG Yi. Ti doped CeO₂ nanosheets supported Pd catalyst for alcohol oxidation: Catalysis of interfacial sites[J]. Journal of Fuel Chemistry and Technology, 2023, 51(7): 1007-1017. doi: 10.1016/S1872-5813(23)60375-5

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Ti doped CeO₂ nanosheets supported Pd catalyst for alcohol oxidation: Catalysis of interfacial sites

doi: 10.1016/S1872-5813(23)60375-5

LEI Li-jun^{1
,
,},
FAN Wei^1
,,
HOU Feng-xiao^1
,,
WANG Yue-qing^1
,,
SUN Chuan^2
,,
ZHANG Yi^1
,

1.
School of Energy and Power Engineering, North University of China, Taiyuan 030051, China
2.
Shandong Chambroad Petrochemicals Co., Ltd. Binzhou 256500, China

Funds: The project was supported by the Funded Project of Shanxi Basic Research Program (202103021223178, 202103021224217)

Received Date: 2023-05-16
Accepted Date: 2023-06-14
Rev Recd Date: 2023-06-13

Available Online: 2023-06-27

Publish Date: 2023-07-01

Abstract

Abstract

The oxidation of alcohols is a significant chemical reaction, and the efficient oxidation of alcohols over heterogeneous catalysts using oxygen as oxidant has attracted much attention in recent years. Among them, Pd/CeO₂ exhibits excellent alcohol oxidation performance. However, the structure-activity relationship between the catalyst’s structure and its catalytic performance for alcohol oxidation is still not clearly understood. This study involved the preparation of CeO₂ nanosheets with different concentrations of surface oxygen vacancies (Ov) and their subsequent loading with Pd to explore their catalytic performance for alcohol oxidation. The findings obtained through XPS, Raman, and XAS indicated a positive correlation between the surface Ov concentration of CeO₂ as well as the ratio of Pd²⁺ fraction. The alcohol oxidation results and structure-performance relationship studies showed that there was a good linear relationship between the Pd²⁺ ratio as well as the surface Ce³⁺ concentration and the TOF of benzyl alcohol oxidation reaction, respectively. And the interfacial site (Pd–O–Ce) formed by Pd and CeO₂ was the main catalytic site for this type of alcohol oxidation catalysts. This study contributes to the understanding of the catalytic role of interfacial sites in metal and oxide support for the development of better alcohol oxidation catalysts.
- Pd/CeO₂,
- interfacial catalytic site,
- CeO₂ nanosheets,
- oxygen vacancies,
- alcohol oxidation

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References(28)

References

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