文章信息/Info

Title:

Application of Cobalt�睟ased Materials in the Removal of CO by Catalytic Oxidation

文章編號:

1674-3962(2025)03-0282-13

作者:

陳俊謀; 王力鵬; 黃志偉; 郭蘇鳳; 荊國華

1. 華僑大學化工學院，福建 廈門 361021 2. 南方科技大學理學院，廣東 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

關鍵詞:

催化氧化; Co3O4; 改進策略; 反應機理; CO選擇性氧化反應

Keywords:

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

分類號:

O643.3

DOI:

10.7502/j.issn.1674-3962.202307019

文獻標志碼:

A

摘要:

近年來，鈷基催化材料（如四氧化三鈷，Co3O4）憑借其多價態、高配位數以及不飽和d電子軌道等特性，在眾多催化劑中脫穎而出，并在CO催化氧化技術領域引起廣泛關注。為推動鈷基催化材料的實際應用，制備低溫長期穩定且高效的鈷基CO氧化催化劑一直是當前研究的焦點。例如，在汽車尾氣和工業煙氣處理方面，需要避免催化劑高溫燒結失活；而在甲醇重整制氫燃料電池的原料氣中的CO脫除過程中，則需要實現高效的CO選擇性氧化反應。回顧了針對鈷基催化體系采用的不同改進策略的研究進展，通過這些改進手段，成功地提升了催化劑的活性、穩定性和耐受性。同時，簡要闡述了CO在鈷基催化劑表面的反應機理，并總結了當前鈷基材料催化氧化CO的熱點研究方向，為其深入研究和商業應用推廣提供參考。

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�瞓ased catalytic materials.