Back to results
US 5,942,460 AGranted
Catalyst system
AssigneeBP Chemicals Limited
InventorsCarl Sherman Garland, Martin Francis Giles, John Glenn Sunley
Life of this patent
Estimating the term…
Abstract
A process for the production of acetic acid by carbonylation of methanol or a reactive derivative thereof by contacting the methanol or derivative with carbon monoxide in a liquid reaction composition comprising (a) acetic acid, (b) an iridium catalyst, (c) methyl iodide, (d) at least a finite quantity of water and (e) methyl acetate is improved by the use as promoter of at least one of ruthenium and osmium.
Claims6
A catalyst system consisting essentially of:
- (a) an iridium catalyst, (b) methyl iodide, and (c) a promoter selected from the group consisting of ruthenium, osmium and mixtures of ruthenium and osmium.
Dependencies are inferred from the claim text.