Issue 10, 2024

Efficient MnFe/Al2O3 catalyst for NH3-SCR of NO at low temperature: the influence of strong interactions between active components and the carrier

Abstract

Supported MnFeOx catalysts have been prepared using Al2O3 as the substrate and were investigated for NH3-SCR. The 20% MnFe/Al2O3 catalyst removed over 80% of NOx with an N2 selectivity exceeding 90% at temperatures between 80 and 340 °C. The results from the various characterization studies indicated that the increased activity of MnFe/Al2O3 catalysts can be primarily linked to the increased chemisorbed oxygen species and Fe3+ concentrations, greater reducibility, and higher adsorption capacity for NH3. These characteristics are the outcome of the strong interaction, larger specific surface, and abundant acidic sites. Additionally, in situ DRIFTS analysis of the reaction mechanism revealed that the E–R and L–H mechanisms were responsible for the NH3-SCR reaction over the 20% MnFe/Al2O3 catalyst.

Graphical abstract: Efficient MnFe/Al2O3 catalyst for NH3-SCR of NO at low temperature: the influence of strong interactions between active components and the carrier

Supplementary files

Article information

Article type
Paper
Submitted
04 Feb 2024
Accepted
10 Apr 2024
First published
12 Apr 2024

Catal. Sci. Technol., 2024,14, 2929-2939

Efficient MnFe/Al2O3 catalyst for NH3-SCR of NO at low temperature: the influence of strong interactions between active components and the carrier

Q. Xu, Z. Zheng, J. Luo, Z. Lai, J. Chen and J. Shang, Catal. Sci. Technol., 2024, 14, 2929 DOI: 10.1039/D4CY00158C

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