Catalyst for alkylation of phenols
US5128304A · kind A · utility
9Cited by
9References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1991 |
| Grant date | Jul 7, 1992 |
| Priority date | — |
| Expiry date | Jul 25, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J23/862
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method of alkylating phenols which comprises reacting phenols having a hydrogen atom in at least one of the ortho-positions with regard to the hydroxyl group with an alcohol in a gaseous phase under heat in the presence of a catalyst comprising iron oxide, silica, chromium oxide, germanium oxide and an alkali metal compound. The catalyst exhibits a long catalytic activity duration and decreases frequency of regeneration and replacement of catalysts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.