Catalyst and method for producing carbonic diesters
US5405986A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1994 |
| Grant date | Apr 11, 1995 |
| Priority date | — |
| Expiry date | Jan 24, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J21/18
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst for synthesizing a carbonic diester includes at least one copper compound selected from among copper oxides, copper hydroxides, a salt of copper with a weak acid consisting of the elements other than halogen such as copper borates, and complexes or complex salts consisting of the elements other than halogen and formed with copper or a copper compound a and ligand. The catalyst has a high activity, a high reaction selectivity and excellent stability with a minimal risk of corroding equipment. The catalyst can include, as a co-catalyst component, a platinum-group metal such as palladium or a halogen-free platinum-group metal compound such as palladium acetate. The catalyst component may be supported on a carrier, for example, an activated carbon. A carbonic diester is advantageously produced by allowing an alcohol to react with carbon monoxide and oxygen in the presence of the catalyst. The corrosion due to the catalyst is considerably inhibited so that a dimethyl carbonate can be produced with an excellent stability for a long duration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.