Catalytic CO oxidation on CeO2-based materials: Modification strategies, structure-performance relationships, challenges and prospects

IF 8.1 1区 工程技术 Q1 ENGINEERING, CHEMICAL
Shuyi Liu, Yinghao Xue, Yan Jia, Hanxue Wang, Qing Nie, Jianwei Fan
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引用次数: 0

Abstract

Catalytic oxidation of carbon monoxide (CO) has gained increasing interest in recent years due to its promising applications. Cerium-based catalysts have been widely employed in CO oxidation processes due to their reversible oxygen storage/release capacity (OSC), excellent redox activity, and the most abundant rare earth element in the crust (46 ppm). However, conventional CeO2 catalysts still face challenges of insufficient activity and poor stability. Herein, strategies to enhance the activity of CeO2 catalysts are detailed, including crystal facet engineering, metal-support modification, and heteroatom doping. In conclusion, these strategies aim to increase the number of oxygen vacancies, optimize surface active sites, and strengthen the metal-support interaction, thereby significantly improving the activity of catalytic CO oxidation.

Abstract Image

基于 CeO2 材料的一氧化碳催化氧化:改性策略、结构性能关系、挑战与前景
近年来,一氧化碳(CO)的催化氧化因其广阔的应用前景而受到越来越多的关注。铈基催化剂具有可逆的储氧/释氧能力(OSC)、出色的氧化还原活性以及地壳中最丰富的稀土元素(46 ppm),因此被广泛应用于一氧化碳氧化过程。然而,传统的 CeO2 催化剂仍然面临着活性不足和稳定性差的挑战。本文详细介绍了提高 CeO2 催化剂活性的策略,包括晶面工程、金属支架改性和杂原子掺杂。总之,这些策略旨在增加氧空位的数量、优化表面活性位点以及加强金属与支撑物之间的相互作用,从而显著提高催化 CO 氧化的活性。
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来源期刊
Separation and Purification Technology
Separation and Purification Technology 工程技术-工程:化工
CiteScore
14.00
自引率
12.80%
发文量
2347
审稿时长
43 days
期刊介绍: Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.
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