Low-Temperature O3-Catalytic Oxidation of Methane on Cobalt-Containing Zeolite Catalysts

The Co/BEA zeolite catalyst was found to exhibit exceptionally high activity in ozone catalytic oxidation (OZCO) of methane impurities in air, and it provided CH 4 conversion >85% in the temperature range 90–170°С at a high gas hourly space velocity (100 000 h –1 ). A comparative study of the cat...

Full description

Saved in:
Bibliographic Details
Published in:Kinetics and catalysis 2024-08, Vol.65 (4), p.417-420
Main Authors: Bokarev, D. A., Paramoshin, I. V., Kanaev, S. A., Baeva, G. N., Rassolov, A. V., Stakheev, A. Yu
Format: Article
Language:English
Subjects:
Catalysis
Catalysts
Catalytic converters
Chemistry
Chemistry and Materials Science
Cobalt
Comparative studies
Low temperature
Methane
Oxidation
Physical Chemistry
Silicon dioxide
Zeolites
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The Co/BEA zeolite catalyst was found to exhibit exceptionally high activity in ozone catalytic oxidation (OZCO) of methane impurities in air, and it provided CH 4 conversion >85% in the temperature range 90–170°С at a high gas hourly space velocity (100 000 h –1 ). A comparative study of the catalytic performance of 0.5% Co/BEA, 5% Co/BEA, and 5% Co/SiO 2 samples was performed for elucidating the nature of the active sites on which the process takes place. The comparison of the catalytic data with the results of catalyst characterization by electron microscopy, UV spectroscopy, X-ray diffraction analysis, and temperature-programmed reduction allowed us to conclude that the active sites of low-temperature methane oxidation are Co 2+ ions located in the cationic positions of the zeolite framework, and the 0.5% Co/BEA catalyst had the highest activity in methane oxidation.
ISSN:0023-1584
1608-3210
DOI:10.1134/S0023158424601736