Catalyst for the dehalogenation of .alpha.-halogenated carboxylic acids
US5356850A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1992 |
| Grant date | Oct 18, 1994 |
| Priority date | — |
| Expiry date | Oct 16, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a catalyst comprising a rare metal of Group VIII of the Periodic Table of Elements which has been deposited on an inert support and which has been used to dehalogenate .alpha.-halogenated carboxylic acids in the presence of hydrogen, and a rare metal of Group VIII of the Periodic Table of Elements which has been deposited on an inert support and which is such that the granulometry of b) is very much lower than that of a) to form a homogeneous mixture as a result of the action of currents of .alpha.-halogenated carboxylic acid and hydrogen. It is particularly useful for regenerating palladium catalysts used in the purification of crude monochloroacetic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.