Carbonylation catalysts

• US 4,792,620 A
• Filed: 03/03/1987
• Issued: 12/20/1988
• Est. Priority Date: 10/14/1983
• Status: Expired due to Fees

• Current Assignee: BP Chemicals Ltd. (BP PLC)
• Original Assignee: BP Chemicals Ltd. (BP PLC)
• Inventors: Hershman, Arnold, Knox, Walter R., Paulik, Frank E., Roth, James F.
• Primary Examiner(s): Killos, Paul J.
• Application Number:
  US07/021,384
• Time in Patent Office: 658 Days
• Field of Search: 562/519, 560/232, 260/549
• US Class Current: 560/232
• CPC Class Codes: B01J 2231/34 Other additions, e.g. Monsanto-type carbonylations, addition to 1,2-C=X or 1,2-C-X triplebonds, additions to 1,4-C=C-C=X or 1,4-C=-C-X triple bonds with X, e.g. O, S, NH/N
• CPC Class Codes: B01J 2531/822 Rhodium
• CPC Class Codes: B01J 31/0231 Halogen-containing compounds
• CPC Class Codes: B01J 31/1895 the ligands containing arsenic or antimony
• CPC Class Codes: B01J 31/20 Carbonyls
• CPC Class Codes: B01J 31/2409 with more than one complexing phosphine-P atom
• CPC Class Codes: C07C 51/10 by reaction with carbon monoxide
• CPC Class Codes: C07C 51/12 on an oxygen-containing group in organic compounds, e.g. alcohols
• CPC Class Codes: C07C 51/14 on a carbon-to-carbon unsaturated bond in organic compounds
• CPC Class Codes: C07C 67/36 by reaction with carbon monoxide or formates C07C67/02, C07C67/03, C07C67/10 take precedence
• CPC Class Codes: C07C 69/14 of monohydroxylic compounds

Abstract

A catalyst system having high activity and selectivity to carbonylation products comprises a rhodium-containing catalytically active component and a halogen-containing promoter component, the halogen being selected from the group consisting of bromine, iodine, bromide compounds, and iodide compounds.

Claims

1. A process for the carbonylation of a reactant selected from the group consisting of alkyl esters and ethers, by reacting the same with carbon monoxide, which comprises effecting said carbonylation in the presence of a solution containing a rhodium compound and a promoter substance selected from the group consisting of iodine and an iodine compound at a temperature of from 50°

C. to 400°

C. at a carbon monoxide partial pressure of 1 psig to 15,000 psig.

2. A process as defined in claim 1 wherein the reactant is methyl acetate or dimethyl ether.

3. A process as defined in claim 1 wherein the reactant is methyl acetate.