Oxidative-dehydrogenation process
US4599477A · kind A · utility
12Cited by
70References
9Claims
0Family size
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Key dates
| Filing date | Oct 30, 1985 |
| Grant date | Jul 8, 1986 |
| Priority date | — |
| Expiry date | Oct 30, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/252
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Oxidative dehydrogenation catalysts suitable for converting C.sub.4 to C.sub.8 mono-olefins to conjugated dienes comprise vanadium, phosphorus, and alkali metal components, and preferably also a tin component, in combination with a microporous crystalline silica or a crystalline zeolite having a silica-to-alumina ratio of at least 6.0. In one embodiment, the catalyst has a surface area between 30 M.sup.2 /g to 450 M.sup.2 /g and the vanadium has an average valence in the range of from 3.50 to 4.95.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.