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Topics in Catalysis
Erschienen in: Topics in Catalysis 1-2/2012

01.03.2012 | Original Paper

In situ Infrared Spectroscopic Study of CH4 Oxidation Over Co–ZSM-5

verfasst von: Mayfair C. Kung, Sean S. -Y. Lin, Harold H. Kung

Erschienen in: Topics in Catalysis | Ausgabe 1-2/2012

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Abstract

Surface species formed in CH4 activation over Co–ZSM-5 were monitored by in situ DRIFT spectroscopy. IR absorption bands assigned to adsorbed methoxide, formate and polyoxymethylene were detected. The similarities in the IR bands and their evolution during He purge after reactions conducted under anaerobic and aerobic conditions suggested that Cannizzaro disproportionation of formaldehyde is a significant reaction pathway. This was verified when water was found to react with a surface species to form adsorbed formate. Continued formation of surface formate was observed during purging in He which indicated substantial surface storage of formaldehyde as polyoxymethylene.
Vorheriger Artikel Polysiloxanes in Catalysis and Catalyst Preparation: Opportunities for Control of Catalytic Processes

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Metadaten
Titel
In situ Infrared Spectroscopic Study of CH4 Oxidation Over Co–ZSM-5
verfasst von
Mayfair C. Kung
Sean S. -Y. Lin
Harold H. Kung
Publikationsdatum
01.03.2012
Verlag
Springer US
Erschienen in
Topics in Catalysis / Ausgabe 1-2/2012
Print ISSN: 1022-5528
Elektronische ISSN: 1572-9028
DOI
https://doi.org/10.1007/s11244-012-9774-6

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