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Title: Heterogeneous catalyst for the production of acetic anhydride from methyl acetate

Abstract

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.

Inventors:
;
Issue Date:
Research Org.:
Air Products and Chemicals Inc
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
335427
Patent Number(s):
5892110
Application Number:
PAN: 8-651,138
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (United States)
DOE Contract Number:  
FC22-95PC93052
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 6 Apr 1999
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; ANHYDRIDES; CHEMICAL PREPARATION; METHYL ACETATE; CARBON MONOXIDE; HYDROGEN; CHEMICAL REACTIONS; CATALYSTS; PHOSPHINES; CATALYTIC EFFECTS

Citation Formats

Ramprasad, D, and Waller, F J. Heterogeneous catalyst for the production of acetic anhydride from methyl acetate. United States: N. p., 1999. Web.
Ramprasad, D, & Waller, F J. Heterogeneous catalyst for the production of acetic anhydride from methyl acetate. United States.
Ramprasad, D, and Waller, F J. Tue . "Heterogeneous catalyst for the production of acetic anhydride from methyl acetate". United States.
@article{osti_335427,
title = {Heterogeneous catalyst for the production of acetic anhydride from methyl acetate},
author = {Ramprasad, D and Waller, F J},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {4}
}