Catalysts system for producing aromatic carbonates
US6380417B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2000 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Sep 15, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/847
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least one aromatic hydroxy compound with oxygen and carbon monoxide in the presence of a carbonylation catalyst system that includes a catalytic amount of a combination of inorganic co-catalysts containing manganese and nickel; manganese and iron; manganese and chromium; manganese and cerium; manganese and europium; manganese, cerium, and europium; manganese, iron, and europium; or manganese and thorium. In various alternative embodiments, the carbonylation catalyst system can include an effective amount of a palladium source and an effective amount of a halide composition. Further alternative embodiments can include catalytic amounts of various other inorganic co-catalyst combinations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.