Water dealkylation catalyst of aromatic hydrocarbons
US4238368A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1978 |
| Grant date | Dec 9, 1980 |
| Priority date | — |
| Expiry date | Dec 18, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2529/61
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Catalyst for water dealkylation of oil fractions containing monoalkylated or polyalkylated aromatic hydrocarbons, said catalyst containing at least one metal of group VIII in a proportion of 0.1 to 5% by weight on a carrier, characterized in that said carrier is a zeolite L that can be exchanged with either alkaline cations or polyvalent cations of groups V.sub.b, VI.sub.b and VII.sub.b. The zeolite L can be exchanged with a solution of metals such as lithium, sodium, caesium, chromium, manganese, and rhodium. A method of using the catalyst by contacting the hydrocarbons with the catalyst at a temperature of 400.degree.-600.degree. C., a pressure of 0-80 bars, a space velocity of the hydrocarbon of from 0.1 to 10h.sup.-1, and a water to hydrocarbon mol ratio of 2-20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.