Method for regenerating palladium-containing metal loaded catalyst, palladium-containing metal loaded catalyst and method for producing the same
2007
Disclosed is a method for regenerating a palladium-containing metal loaded catalyst which is used for producing an alpha,beta-unsaturated carboxylic acid from an olefin or an an alpha,beta-unsaturated aldehyde. Specifically disclosed is a method for regenerating a palladium-containing metal loaded catalyst which is used for producing an alpha,beta-unsaturated carboxylic acid by oxidizing an olefin or an an alpha,beta-unsaturated aldehyde with a molecular oxygen in a liquid phase. This method comprises a firing step wherein a palladium-containing metal loaded catalyst after use is fired at 150-700 DEG C. in the presence of a molecular oxygen for converting at least a part of palladium into palladium oxide, and a reducing step wherein the palladium oxide obtained in the firing step is reduced.
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