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US 11,111,193 B2Granted
Treatment of a mixed metal oxide catalyst containing molybdenum, vanadium, niobium and optionally tellurium
AssigneeShell Oil Company
InventorsRonald Jan Schoonebeek, Michael Johannes Franciscus Maria Verhaak
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Abstract
The invention relates to a process for treatment of a mixed metal oxide catalyst containing molybdenum, vanadium, niobium and optionally tellurium, comprising contacting a gas stream comprising methane, an inert gas or oxygen or any combination of two or more of these with the catalyst, wherein said gas stream comprises 0 to 25 vol. % of an alkane containing 2 to 6 carbon atoms and/or alkene containing 2 to 6 carbon atoms.
Claims4
A process for treatment of a used mixed metal oxide catalyst, the process comprising:
- oxidative dehydrogenation of a feed comprising an alkane containing 2 to 6 carbon atoms and/or oxidation of a feed containing an alkene containing 2 to 6 carbon atoms comprising contacting the feed containing the alkane and/or alkene with a mixed metal oxide catalyst comprising molybdenum, vanadium, niobium, and optionally tellurium to produce a used mixed metal oxide catalyst;
- and
- contacting a gas stream comprising methane with the used mixed metal oxide catalyst at a temperature from 200 to 500° C. and at a pressure, wherein said gas stream comprises no or substantially no alkane containing 2 to 6 carbon atoms, no or substantially no alkene containing 2 to 6 carbon atoms, and no or substantially no oxygen.
Dependencies are inferred from the claim text.