Catalysts for water dealkylation of aromatic hydrocarbons
US4311614A · kind A · utility
1Cited by
4References
14Claims
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Key dates
| Filing date | May 29, 1980 |
| Grant date | Jan 19, 1982 |
| Priority date | — |
| Expiry date | May 29, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2523/46
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A water dealkylation catalyst of aromatic hydrocarbons containing at least one metal of Group VIII and eventually, one metal of group VII.sub.b deposited on a gamma alumina of special properties containing at least 1000 ppm of sulfate ions having undergone a pre-treatment in aqueous medium at a pH between 1 and 10 at a temperature below 100.degree. C. The catalysts contain rhodium on pre-treated gamma alumina and the bimetallic catalysts contain 2 metals of the group VIII or one metal of the group VII and one metal of the group VII.sub.b on pre-treated gamma alumina.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.