Journal of the Chemical Society - Faraday Transactions p. 2291 - 2295 (1990)
Update date:2022-08-17
Topics:
Miyata, Hisashi
Tokuda, Shoji
Ono, Takehiko
Ohno, Takashi
Hatayama, Fumikazu
Molybdenum oxide supported on zirconia has been studied by XRD, FTIR and laser-Raman spectroscopy, together with the oxidation of (Z)-but-2-ene.Mo-Zr catalysts with less than 11 wt percent of Mo loadings are mainly composed of amorphous polymolybdates.Mo-Zr catalysts with high selectivities to acetaldehyde and acetic acid and both Lewis- and Broensted-acidic sites by pyridine adsorption.On the other hand, the catalysts with low MoO3 loading exhibit selectivities to furan and buta-1,3-diene and only Lewis sites.In situ FTIR and Raman spectra show the different character of Mo oxides with MoO3 loading.This difference of Mo character leads to the difference in selectivities for butene oxidation.
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