Catalyzed processes for the hydrotreatment of hydrocarbons
US4152246A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1977 |
| Grant date | May 1, 1979 |
| Priority date | — |
| Expiry date | Jul 18, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J23/56
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The processes of the present invention employ catalysts in the hydrotreatment of hydrocarbons and comprise, on a refractory inorganic oxide support, the following metals: PA1 (a) from 0.02 to 2% of at least one platinum metal; PA1 (b) from 0.02 to 2% of at least one metal belonging to the group consisting of zirconium, titanium, and tungsten; PA1 (c) from 0.02 to 2% tin. This catalyst is preferably halogenated, typically with chlorine, from 0.4 to 2%. The preferred process according to this invention is the isomerization of a charge of alkylaromatic hydrocarbons, and particularly those having eight carbon atoms. The preferred isomerization catalyst is a platinum, tin and zirconium trimetallic catalyst halogenated with chlorine approximately from 1 to 2% based on the total catalyst weight. The preferred isomerization process is practiced in at least two successive stages with the contacting of the catalyst taking place in at least one of said stages; and especially under the following conditions: PA1 (a) Pressure: Comprised between 3 and 40 bars. PA1 (b) Temperature: Comprised between 250.degree. and 550.degree. C. PA1 (c) Molar ratio of hydrogen to hydrocarbons: Comprised between 3…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.