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Mini Review

Recent advances on catalysts for preferential oxidation of CO

Huimin Liu1( ), Dezheng Li1, Jiawen Guo1, Yuqiao Li1, Aidi Liu1, Yitong Bai1, Dehua He2( )
School of Chemical and Environmental Engineering, Liaoning University of Technology, Jinzhou 121001, China
Innovative Catalysis Program, Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
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Graphical Abstract

This review describes the progress of the catalysts used in preferential oxidation of CO (PROX) and extracts the underlying reaction mechanism, with the aim to provide guidance for the rational design of efficient catalysts in the future.

Abstract

The trace amount of CO in H2-rich gas poisons Pt electrode when it is adopted as feedstock for proton-exchange-membrane fuel cells. Preferential oxidation of CO (PROX) is a promising approach to selectively oxidize the trace amount of CO while keeping H2 unoxidized. Catalyst plays important roles in PROX. To date, enormous catalysts have been developed for PROX. Summarizing the catalysts developed for PROX and unveiling the reaction mechanism could definitely advance this research field. Herein, in this review, according to the nature of the active sites on the catalysts, we classify the catalysts into group VIII metal-based catalyst, group IB metal-based catalysts, group VIII-group IB bimetallic catalysts, transitional metal oxide catalysts as well as others, describe the progress of the catalysts in PROX in the latest five years, and extract the underlying reaction mechanism, with the aim to provide guidance for the rational design of efficient catalysts in the future.

Keywords

preferential oxidation of COgroup VIII metal-based catalystsgroup IB metal-based catalystsbimetallic catalystsmechanism exploration

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Nano Research
Volume 16 Issue 4,
April 2023
Pages 4399-4410
DOI: 10.1007/s12274-022-5182-9
Cite this article:
Liu H, Li D, Guo J, et al. Recent advances on catalysts for preferential oxidation of CO. Nano Research, 2023, 16(4): 4399-4410. https://doi.org/10.1007/s12274-022-5182-9
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Received: 01 August 2022
Revised: 20 September 2022
Accepted: 11 October 2022
Published: 31 December 2022
© Tsinghua University Press 2022
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