Issue 3, 2023

Enhanced CO oxidation with cobalt-impregnated porous single-crystal manganese oxides

Abstract

Porous single crystals (PSCs) have the advantages of both long-range ordered lattice structure and disordered connected pore structure, which can provide structural coherence and long-distance electronic connectivity, thus reducing the energy loss at grain boundaries and maintaining high stability and activity. In our work, we prepared PSCs Mn2O3, Mn3O4 and MnO and loaded cobalt on these PSCs by impregnation to test the catalytic performance of CO oxidation. The results show that all PSC manganese oxides loaded with cobalt can maintain good performance and cobalt-loaded PSC MnO can completely oxidize CO at 170 °C. In the case of fully adsorbed 1% CO, the proportion of oxygen species adsorbed on the surface becomes the key factor determining the reaction performance. Among them, Mn2O3 loaded with cobalt can maintain long-term stability for 127 h without attenuation. Furthermore, all cobalt-loaded manganese oxides can complete 30 catalytic cycles. This work provides an idea for the design of PSCs and gives a reference for the study of CO oxidation in the field of non-noble metals.

Graphical abstract: Enhanced CO oxidation with cobalt-impregnated porous single-crystal manganese oxides

Supplementary files

Article information

Article type
Paper
Submitted
07 Sep 2022
Accepted
18 Nov 2022
First published
15 Dec 2022

Catal. Sci. Technol., 2023,13, 750-757

Enhanced CO oxidation with cobalt-impregnated porous single-crystal manganese oxides

H. Yu, L. Yi, F. Jiang, X. Wang and K. Xie, Catal. Sci. Technol., 2023, 13, 750 DOI: 10.1039/D2CY01581A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements