Catalyst and a benzene hydrogenation process using said catalyst
US5668293A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 1995 |
| Grant date | Sep 16, 1997 |
| Priority date | — |
| Expiry date | Feb 16, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention concerns a process and catalyst for the production of cyclohexane by hydrogenation of benzene, comprising at least the two following steps: a) gradually introducing the feed of benzene for hydrogenation and a hydrogen-rich gas into a reaction zone containing a cyclohexane-rich liquid and a nickel-based catalyst in colloidal suspension and recovering a gaseous phase containing cyclohexane, hydrogen and benzene; b) introducing the gaseous phase into a reactor operating under hydrogenation conditions and containing at least one fixed bed of a solid nickel-based hydrogenation catalyst, wherein the nickel-based catalyst used in step a) is a product which results from the reduction, by at least one trialkylaluminium compound, of a solution of at least one nickel carboxylate and at least one sodium carboxylate in solution, the Ni:Na molar ratio being between 2:1 and 1000:1 in a hydrocarbon or a hydrocarbon mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.