Process for producing acetic acid or methyl acetate and catalyst therefor
AssigneeDaicel Chemical Industries, Ltd.
InventorSumio Shinoda
Life of this patent
Estimating the term…
Abstract
The present invention relates to: (1) a novel catalyst which has a high catalytic activity, is useful in the production of acetic acid and/or methyl acetate from methanol, and is obtained through ion exchange of an anion of an anion exchanger with an anion of an Ru--Sn hetero-polynuclear compound; (2) a process for producing acetic acid and/or methyl acetate from methanol through a one-stage reaction in a gas phase wherein the catalytic activity is maintained throughout the reaction; and (3) a process for producing acetic acid and/or methyl acetate in the presence of a highly active catalyst, for example, the catalyst specified in (1), at a high reaction rate.
Claims21
A catalyst obtained by ion exchanging an anion of an anion exchanger with an anion of an Ru--Sn hetero-polynuclear compound represented by the following general formula (1):
- [Ru(SnX.sub.3).sub.m (Y).sub.n ].Z (1)
- wherein X represents a halogen atom, an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group or an alkoxyl group;
- Y represents a ligand;
- m is an integer of 1 to 6, n is an integer of 0 to 5 and m+n is an integer of 1 to 6;
- and Z represents a counter cation.
A process for producing acetic acid and/or methyl acetate characterized by effecting dehydrogenation of methanol in a gas phase in the presence of a solid catalyst.
The process for producing acetic acid and/or methyl acetate as claimed in claim 18, wherein the Ru--Sn hetero-polynuclear compound is a complex represented by the following general formula (1):
- [Ru(SnX.sub.3).sub.m (Y).sub.n ].Z (1)
- wherein X represents a halogen atom, an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group or an alkoxyl group;
- Y represents a ligand;
- m is an integer of 1 to 8, n is an integer of 0 to 5 and m+n is an integer of 1 to 6;
- and Z represents a counter cation.
Dependencies are inferred from the claim text.