Issue 6, 2024

Highly active and stable RuO2/MgF2 catalysts for efficient HCl oxidation in the fluorochemical industry

Abstract

The catalytic oxidation of gaseous HCl with a small amount of HF to Cl2 is important and highly desired for chlorine recycling in the fluorochemical industry. In this work, a series of partly hydroxylated magnesium fluorides were prepared via fluorolytic and solvothermal synthesis methods at different solvothermal reaction times and used as supports to prepare RuO2/MgF2 catalysts via an incipient impregnation method. Both supports and catalysts were extensively characterized with different techniques to gain insight into their physicochemical properties. Furthermore, these prepared RuO2/MgF2 catalysts were evaluated in the oxidation of HCl with a HF concentration of 400 ppm. It is found that at an optimal solvothermal reaction time, the bridging –OH groups can be abundantly formed on MgF2, which can significantly enhance the adsorption of the Ru-complex anions via an electrostatic attraction during the impregnation to greatly increase the dispersion of RuO2 on MgF2 and affect the chemical environment of RuO2, resulting in pronounced catalytic activity and stability. The current study, therefore, provides a strategy to develop an efficient catalyst for the oxidation of HCl contaminated with HF.

Graphical abstract: Highly active and stable RuO2/MgF2 catalysts for efficient HCl oxidation in the fluorochemical industry

Supplementary files

Article information

Article type
Paper
Submitted
18 Dec 2023
Accepted
04 Feb 2024
First published
14 Feb 2024

Catal. Sci. Technol., 2024,14, 1633-1641

Highly active and stable RuO2/MgF2 catalysts for efficient HCl oxidation in the fluorochemical industry

Y. Gong, S. Nie, H. Ji, L. Fu, R. Ma, X. Lu, Y. Fu and W. Zhu, Catal. Sci. Technol., 2024, 14, 1633 DOI: 10.1039/D3CY01749D

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