Catalytic dealkylation of alkylated phenols
US4560810A · kind A · utility
8Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1984 |
| Grant date | Dec 24, 1985 |
| Priority date | — |
| Expiry date | Nov 14, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Alkylated hydroxyaromatic compounds, particularly alkylated phenols such as mesitol and 2,4-xylenol, are selectively ortho-dealkylated by contact at a temperature within the range of about 350.degree.-500.degree. C. with a catalyst comprising a combination of at least one chromium oxide and at least one of the oxides of zinc, iron, magnesium and manganese, with zinc and iron being preferred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.