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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:
 [1];  [1]
  1. Allentown, PA
Issue Date:
Research Org.:
Air Products and Chemicals, Inc. (Allentown, PA)
OSTI Identifier:
872244
Patent Number(s):
5892110
Assignee:
Air Products and Chemicals, Inc. (Allentown, PA)
Patent Classifications (CPCs):
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
DOE Contract Number:  
FC22-95PC93052
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
heterogeneous; catalyst; production; acetic; anhydride; methyl; acetate; relates; process; producing; reaction; carbon; monoxide; hydrogen; elevated; temperatures; pressures; presence; alkyl; halide; bifunctional; contains; insoluble; polymer; pendant; quaternized; phosphine; ionically; bonded; anionic; viii; metal; complexes; remainder; iodide; contrast; prior; processes; accelerator; promoter; achieve; catalytic; products; easily; separated; filtration; recycled; consecutive; runs; loss; activity; catalysts; carbonylating; dimethyl; provided; heterogeneous catalyst; viii metal; metal complexes; elevated temperatures; carbon monoxide; elevated temperature; catalytic reaction; easily separated; ethyl acetate; metal complex; soluble polymer; bifunctional catalyst; pendant quaternized; methyl acetate; insoluble polymer; alkyl halide; acetic anhydride; ionically bonded; soluble poly; /999/

Citation Formats

Ramprasad, Dorai, and Waller, Francis Joseph. Heterogeneous catalyst for the production of acetic anhydride from methyl acetate. United States: N. p., 1999. Web.
Ramprasad, Dorai, & Waller, Francis Joseph. Heterogeneous catalyst for the production of acetic anhydride from methyl acetate. United States.
Ramprasad, Dorai, and Waller, Francis Joseph. Fri . "Heterogeneous catalyst for the production of acetic anhydride from methyl acetate". United States. https://www.osti.gov/servlets/purl/872244.
@article{osti_872244,
title = {Heterogeneous catalyst for the production of acetic anhydride from methyl acetate},
author = {Ramprasad, Dorai and Waller, Francis Joseph},
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 = {1}
}

Patent:

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