Selective oxidation of methane to formaldehyde: comparison of the role of promoters in hydrocarbon rich and lean conditions

✍ Scribed by M Kennedy; A Sexton; B Kartheuser; E Mac Giolla Coda; J.B. McMonagle; B.K. Hodnett

• Book ID: 103935535
• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 499 KB
• Volume: 13
• Category: Article
• ISSN: 0920-5861
• DOI: 10.1016/0920-5861(92)80170-r

✦ Synopsis

The selective oxidation of methane to formaldehyde at atmospheric pressure was investigated over a range of silica supported molybdena and vanadia catalysts promoted with iron, silver, chromium, sodium or cobalt. None of these additrves added alone to the silica support assisted in the selective oxidation of methane to formaldehyde, but beneficial effects were observed when molybdenum was subsequently added by impregnation.

The vanadium and molybdenum silica systems were compared for a wide range of experimental conditions, including the influence of oxidant b (methane rich or met N20 or O2 ) and the influence of methane content of the feed ane lean conditions). A detailed examination of the influence of vanadia loading on silica was undertaken and this established that vanadia loadings in the range 1-4wt% vanadium gave the best performance.