Polyoxometallate catalysts and catalytic processes
US6914029B2 · kind B2 · utility
9Cited by
16References
19Claims
0Family size
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Key dates
| Filing date | Nov 1, 2002 |
| Grant date | Jul 5, 2005 |
| Priority date | — |
| Expiry date | Jan 18, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J37/082
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An active and selective hydrocarbon partial oxidation catalyst comprises an activated partially-reduced polyoxometallate, preferably niobium polyoxomolybdate, that is prepared from a suitable polyoxoanion, which has been exchanged with a suitable cation and activated by heating to an activation effective temperature in the presence of a suitable reducing agent such as pyridinium. C3 and C4 hydrocarbons may be partially oxidized selectively to acrylic acid and maleic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.