Process for producing an iridium solution and use of same as catalyst
AssigneeAcetex Chimie
InventorDominique Nobel
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Abstract
An iridium-based solution is prepared by contacting components in a liquid phase containing (a) a carbonylated iridium compound, (b) hydriodic acid, a precursor of such an acid, or mixture thereof, and (c) a solvent; under a total pressure of between 1 and 10 bar at a temperature not greater than the boiling temperature of the solvent under conditions in which the components are brought into contact. The iridium-based solution can be used as a catalyst for carrying out carbonylation, hydroformylation or isomerization reactions.
Claims11
A process for the preparation of an iridium-based solution, said process comprising contacting in a liquid phase:
- (a) a carbonylated iridium compound;
- (b) hydriodic acid, a precursor of such an acid, or mixture thereof;
- and
- (c) a solvent;
- under a total pressure of between 1 and 10 bar at a temperature not greater than the boiling temperature of the solvent under conditions in which the components are brought into contact, wherein the number of moles of hydriodic acid, with respect to the number of moles of iridium, is between 1 and 20, and the contacting is carried out under an atmosphere selected from the group consisting of air, rare gases, nitrogen, hydrogen and mixtures thereof.
Dependencies are inferred from the claim text.