Abstract
The catalytic total oxidation of methane was performed on various catalysts consisting of cobalt oxide (Co 3O 4) deposited on alumina-based supports. During the tests, deactivation occurred mainly because of the reactivity of the active phase towards the support, leading to a poorly active cobalt aluminate. Ageing was also performed in order to study the stability of the catalysts. Physico-chemical techniques were used to define more precisely the causes of the deactivation. Modifications of the nature of the cobalt species present on the surface of the catalyst were followed by X-ray photoelectron spectroscopy. Under the conditions used, the best catalyst was Co 3O 4 deposited on a thermostable, i.e. high-temperature-resistant, spinel for which tetrahedral sites able to accommodate Co 2+ cations are occupied by Zn 2+ cations.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.