Process for the hydrogenation of maleic anhydride to tetrahydrofuran and gamma-butyrolactone
US5055599A · kind A · utility
6Cited by
7References
14Claims
0Family size
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Key dates
| Filing date | Jun 23, 1989 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Jun 23, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D307/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Tetrahydrofuran and gamma-butyrolactone are prepared from at least one of maleic anhydride or succinic anhydride by catalytically hydrogenating vaporous maleic anhydride or vaporous succinic anhydride in the presence of hydrogen in contact with a catalyst comprising an essentially inert, at least partially porous support having an outer surface, and a catalytically active oxide material coating onto the outer surface of the support which strongly adheres to the support, wherein the catalytically active oxide material comprises the mixed oxides of copper, zinc and aluminum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.