Issue 19, 2024

Morphology dependence of Nb2O5-supported cobalt oxide in catalytic toluene oxidation

Abstract

This research describes the preparation of cobalt-based catalysts supported on Nb2O5 substrates of various forms: rods (Nb2O5-R), grids (Nb2O5-G), and spherical structures (Nb2O5-S). These catalysts demonstrated diverse reactivity in toluene oxidation, which correlated with their individual physical and chemical traits and the interfacial interaction between cobalt oxide and the Nb2O5 support. Notably, the catalyst with a spherical Nb2O5 support (CoOx/Nb2O5-S) outperformed the catalysts with other supports and showed the best activity in oxidizing toluene. The investigation underscored the role of the unique features of the Nb2O5 substrate in augmenting the catalyst's efficacy in toluene adsorption and activation. Density functional theory (DFT) revealed more facile toluene adsorption on CoOx/Nb2O5-S (−0.65 eV) and reduced energy requirements for oxygen vacancy creation and adsorption. This suggested that the CoOx/Nb2O5-S catalyst enhanced surface oxygen mobility and boosted catalytic efficiency.

Graphical abstract: Morphology dependence of Nb2O5-supported cobalt oxide in catalytic toluene oxidation

Supplementary files

Article information

Article type
Paper
Submitted
09 May 2024
Accepted
09 Jul 2024
First published
06 Aug 2024

Catal. Sci. Technol., 2024,14, 5722-5730

Morphology dependence of Nb2O5-supported cobalt oxide in catalytic toluene oxidation

S. Li, X. Cheng, W. Zhou, J. Jiang, C. Feng, Y. Liu, X. Li, X. Zhang and Z. Wang, Catal. Sci. Technol., 2024, 14, 5722 DOI: 10.1039/D4CY00596A

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