Hydroalkylation process
US9090528B2 · kind B2 · utility
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13References
25Claims
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Assignee
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Key dates
| Filing date | Nov 30, 2012 |
| Grant date | Jul 28, 2015 |
| Priority date | — |
| Expiry date | Nov 30, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
In a process for producing phenol, benzene is hydroalkylated with hydrogen in the presence of a catalyst under conditions effective to produce a hydroalkylation reaction product comprising cyclohexylbenzene and cyclohexane. At least a portion of the cyclohexane from said hydroalkylation reaction product is then dehydrogenated to produce a dehydrogenation effluent comprising benzene, toluene and hydrogen. At least a portion of the dehydrogenation effluent is washed with a benzene-containing stream to transfer at least a portion of the toluene from the dehydrogenation effluent to the benzene-containing stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.