Cu-Al spinel oxide as a sustained release catalyst for methanol steam reforming: Enhancing the catalytic performance via surface reconstruction

HOU Xiaoning; QING Shaojun; LIU Yajie; ZHANG Lei; GAO Zhixian

doi:10.1016/S1872-5813(23)60379-2

Volume 52 Issue 1

Jan. 2024

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Article Navigation > Journal of Fuel Chemistry and Technology > 2024 > 52(1): 47-54

HOU Xiaoning, QING Shaojun, LIU Yajie, ZHANG Lei, GAO Zhixian. Cu-Al spinel oxide as a sustained release catalyst for methanol steam reforming: Enhancing the catalytic performance via surface reconstruction[J]. Journal of Fuel Chemistry and Technology, 2024, 52(1): 47-54. doi: 10.1016/S1872-5813(23)60379-2

Citation:

HOU Xiaoning, QING Shaojun, LIU Yajie, ZHANG Lei, GAO Zhixian. Cu-Al spinel oxide as a sustained release catalyst for methanol steam reforming: Enhancing the catalytic performance via surface reconstruction[J]. Journal of Fuel Chemistry and Technology, 2024, 52(1): 47-54. doi: 10.1016/S1872-5813(23)60379-2

Citation:

HOU Xiaoning, QING Shaojun, LIU Yajie, ZHANG Lei, GAO Zhixian. Cu-Al spinel oxide as a sustained release catalyst for methanol steam reforming: Enhancing the catalytic performance via surface reconstruction[J]. Journal of Fuel Chemistry and Technology, 2024, 52(1): 47-54. doi: 10.1016/S1872-5813(23)60379-2

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Cu-Al spinel oxide as a sustained release catalyst for methanol steam reforming: Enhancing the catalytic performance via surface reconstruction

doi: 10.1016/S1872-5813(23)60379-2

HOU Xiaoning^{1, 2, 3
,
,},
QING Shaojun^4
,,
LIU Yajie^{5
,
,},
ZHANG Lei^6
,,
GAO Zhixian^6
,

1.
School of Chemistry and Materials Science, Shanxi Normal University, Taiyuan 030032, China
2.
Shanxi Hong'an Technology Co., Taiyuan 030032, China
3.
Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
4.
School of Carbon Neutrality Science and Engineering, Anhui University of Science and Technology, Hefei 231131, China
5.
Department of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, China
6.
School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China

Funds: The project was supported by the Fundamental Research Program (Free Exploration) of Shanxi Province of China (20210302124338, 20210302123358) and the Postdoctoral program of Administrative Committee of Taiyuan Economic Development Zone

More Information

Corresponding author: Tel: +86-18135188795, E-mail: xiaoninghou@126.com; liuyj20@126.com
Received Date: 2023-05-12
Accepted Date: 2023-05-31
Rev Recd Date: 2023-05-31

Available Online: 2023-09-01

Publish Date: 2024-01-09

Abstract

Abstract

Cu-Al spinel oxide as a sustained release catalyst gradually releases active metal Cu during the methanol steam reforming reaction, whose catalytic behavior depends strongly on the surface structure of the catalyst. In this context, Cu-Al spinel solid solution is synthesized by a solid phase ball milling method, followed by treating with acidic and basic solutions in order to modulate the surface composition and structure, thereby to further improve the catalytic performance. Nitric acid is effective for the removal of both surface dispersed Cu and Al oxide species, whereas sodium hydroxide is only effective for the removal of Al oxide species, and ammonium hydroxide shows the weakest effect, removing a very small amount of Cu and Al species. Accompanying with the loss of Cu and Al species, the catalyst surface undergoes structural reconstruction, showing a redistribution of Cu species. Consequently, the copper releasing behavior varies drastically. The catalytic testing results show that the nitric acid and ammonium hydroxide treated catalysts present improved activity, where in the former also shows better stability. Sodium hydroxide treatment has a negative effect on the sustained releasing catalytic performance. In combination with the characterization results of the tested catalysts, it is found that both the copper particle dimension and the microstructure strain of sustained released copper play important roles in the catalytic performance. The findings of this report provide a practical method for the improvement of the sustained releasing catalysis.
- Cu-Al spinel,
- surface modification,
- surface reconstruction,
- methanol steam reforming

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References(21)

References

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