钴基材料催化氧化脱除CO研究进展-中国材料进展

文章信息/Info

Title:: Application of CobaltBased Materials in the Removal of CO by Catalytic Oxidation

作者:: 陈俊谋; 王力鹏; 黄志伟; 郭苏凤; 荆国华; 1. 华侨大学化工学院，福建厦门 361021 2. 南方科技大学理学院，广东深圳 518055

Author(s):: CHEN Junmou; WANG Lipeng; HUANG Zhiwei; GUO Sufeng; JING Guohua; 1. College of Chemical Engineering, Huaqiao University, Xiamen 361021, China 2. College of Science, Southern University of Science and Technology, Shenzhen 518055, China

Keywords:: catalytic oxidation; Co3O4; modification strategy; reaction mechanism; preferential oxidation of CO

摘要:: 近年来，钴基催化材料（如四氧化三钴，Co3O4）凭借其多价态、高配位数以及不饱和d电子轨道等特性，在众多催化剂中脱颖而出，并在CO催化氧化技术领域引起广泛关注。为推动钴基催化材料的实际应用，制备低温长期稳定且高效的钴基CO氧化催化剂一直是当前研究的焦点。例如，在汽车尾气和工业烟气处理方面，需要避免催化剂高温烧结失活；而在甲醇重整制氢燃料电池的原料气中的CO脱除过程中，则需要实现高效的CO选择性氧化反应。回顾了针对钴基催化体系采用的不同改进策略的研究进展，通过这些改进手段，成功地提升了催化剂的活性、稳定性和耐受性。同时，简要阐述了CO在钴基催化剂表面的反应机理，并总结了当前钴基材料催化氧化CO的热点研究方向，为其深入研究和商业应用推广提供参考。

Abstract:: In recent years, cobalt-based catalytic materials have emerged as prominent catalysts due to their multivalence, high coordination number, and unsaturated d orbitals. These unique characteristics have attracted widespread attention in CO catalytic oxidation technologies. The development of highly efficient catalysts for long-term stable low-temperature CO catalysis has remained a focal point to promote the practical application of cobalt-based catalytic materials. This is particularly crucial in various applications such as automotive exhaust and industrial flue gas treatment for CO removal to prevent catalyst deactivation, as well as in methanol-steam reforming for hydrogen fuel cell feedstock purification through effective preferential oxidation of CO. In this review, we comprehensively summarize multiple strategies employed for enhancing the activity of cobalt-based catalyst. By regulating these modifications, the activity, stability, and tolerance of the catalysts are significantly improved. Additionally, this review briefly elaborates the reaction mechanisms of CO oxidation over cobalt-based catalysts, and the research hot topics are also summarized. Overall, this review provides valuable insights into advancing research efforts and commercialization prospects concerning cobaltbased catalytic materials.