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US 11,944,961 B2Granted
Method for regenerating waste organic zinc catalyst through surface modification
AssigneeLG Chem, Ltd.
InventorSung Kyoung Kim
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Abstract
The present disclosure relates to a method for regenerating a waste organic zinc catalyst by performing surface modification using a dicarboxylic acid and a zinc compound. When using the method for regenerating an organic zinc catalyst according to the present disclosure, the organic zinc catalyst can be regenerated using a convenient method which modifies the dicarboxylic acid and the zinc compound in an alternately repeated manner.
Claims12
A method for regenerating a waste organic zinc catalyst, the method comprising:
- (a) mixing and stirring a waste organic zinc catalyst with a dicarboxylic acid to generate a mixture;
- and
- (b) mixing and stirring the mixture with a zinc compound, wherein the dicarboxylic acid and the zinc compound are solid phases, respectively,
- wherein each of the steps (a) and (b) is alternately repeated at least twice, and
- wherein each of the steps (a) and (b) is performed in a dry blending manner without using any solvent until a regeneration reaction is completed.
2 more elements
Dependencies are inferred from the claim text.