Preparation of bimetallic catalysts for hydrodechlorination of chlorinated hydrocarbons
US5637548A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1995 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | Jul 7, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/514
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing a bimetallic catalyst useful for the hydrodechlorination of chlorinated hydrocarbons, comprising impregnating a support with an active hydrogenating metal from a salt solution of the metal, recovering and drying the thus-impregnated support, reducing the impregnated support by exposure to hydrogen and oxidizing the active hydrogenating metal on said support to an oxidized state by exposure to an oxidizing environment, then impregnating the thus-treated support with a surface segregating metal from a salt solution thereof, aging the support/salt solution mixture over a period of time at an elevated temperature, and finally cooling, recovering and drying the catalyst before charging the same to a reactor for reduction or reduction and chloride source pretreatment and subsequent use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.