Method for selective hydrogenation of phenylacetylene using composite bed in the presence of styrene
US8916736B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 17, 2009 |
| Grant date | Dec 23, 2014 |
| Priority date | — |
| Expiry date | Dec 17, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/167
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention discloses a process for the selective hydrogenation of phenylacetylene in the presence of styrene conducted in a combined bed, which process comprises under hydrogenation reaction conditions, passing a hydrocarbon fraction feedstock containing phenylacetylene and styrene through a combined bed reactor containing a catalyst A and a catalyst B to contact the feedstock with the catalyst A and the catalyst B in turn, wherein the catalyst A is a nickel-based catalyst, the catalyst B is at least one selected from the group consisting of palladium-based catalysts and copper-based catalysts, and a weight ratio of the catalyst A loaded to the catalyst B loaded is from 0.5:1 to 5:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.