The effect of the structure of molybdenum oxides on the selective oxidation of methanol

C. J. Machiels, W. H. Cheng, U. Chowdhry, W. E. Farneth, F. Hong, E. M. Mc Carron, A. W. Sleight

研究成果: Article

62 引文 斯高帕斯(Scopus)

摘要

Selective oxidation of methanol to formaldehyde has been studied over a series of molybdates, molybdenum oxides, mixed tungsten - molybdenum oxides, and supported molybdenum oxide. Reactor studies, Temperature Programmed Reaction (TPR) and in-situ FTIR have shown that water and methanol adsorb dissociatively and reversibly on the same catalyst sites and that the rate determining step is the breaking of a carbon-hydrogen bond. The reaction is of a redox type and a nearly fully oxidized catalyst is most active and selective. The difference in activity between molybdenum trioxide and ferric molybdate can be explained by a mechanism in which formation of adsorbed methoxys does not occur on the predominant (010) face of MoO3. Oxide-support interactions are responsible for the lower selectivity of silica supported catalysts.

原文English
頁(從 - 到)249-256
頁數8
期刊Applied Catalysis
25
發行號1-2 C
DOIs
出版狀態Published - 1986 八月 15

    指紋

All Science Journal Classification (ASJC) codes

  • Engineering(all)

引用此

Machiels, C. J., Cheng, W. H., Chowdhry, U., Farneth, W. E., Hong, F., Mc Carron, E. M., & Sleight, A. W. (1986). The effect of the structure of molybdenum oxides on the selective oxidation of methanol. Applied Catalysis, 25(1-2 C), 249-256. https://doi.org/10.1016/S0166-9834(00)81243-9