Method for producing cyclohexene by dehydration of cyclohexanol
US3974232A · kind A · utility
1Cited by
8References
13Claims
0Family size
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Key dates
| Filing date | Jun 24, 1975 |
| Grant date | Aug 10, 1976 |
| Priority date | — |
| Expiry date | Jun 24, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Cyclohexanol is dehydrated to cyclohexene by heating it in the presence of a heteropolyacid catalyst. The heteropolyacid is selected from tungstophosphoric acid, tungstosilicic acid, molybdophosphoric acid and molybdosilicic acid. Tungstophosphoric acid can be improved in its catalytic performance by calcination. The dehydration reaction is preferably carried out in liquid phase continuously removing cyclohexene by distillation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.