Heterogeneous catalyst for the production of acetic anhydride from methyl acetate
This invention relates to a process for producing acetic anhydride by the reaction of methyl acetate, carbon monoxide, and hydrogen at elevated temperatures and pressures in the presence of an alkyl halide and a heterogeneous, bifunctional catalyst that contains an insoluble polymer having pendant quaternized phosphine groups, some of which phosphine groups are ionically bonded to anionic Group VIII metal complexes, the remainder of the phosphine groups being bonded to iodide. In contrast to prior art processes, no accelerator (promoter) is necessary to achieve the catalytic reaction and the products are easily separated from the catalyst by filtration. The catalyst can be recycled for consecutive runs without loss in activity. Bifunctional catalysts for use in carbonylating dimethyl ether are also provided.
- Research Organization:
- Air Products and Chemicals Inc
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FC22-95PC93052
- Assignee:
- Air Products and Chemicals, Inc., Allentown, PA (United States)
- Patent Number(s):
- US 5,892,110/A/
- Application Number:
- PAN: 8-651,138
- OSTI ID:
- 335427
- Country of Publication:
- United States
- Language:
- English
Similar Records
Heterogeneous catalyst for the production of ethylidene diacetate from acetic anhydride
Heterogeneous catalyst for the production of ethylidene diacetate from acetic anhydride