Method for preparing palladium acetate compound

Abstract

The invention discloses a method for preparing a palladium acetate compound, which comprises the following steps of: dissolving and reducing palladium sponge into floating active sponge palladium black; refluxing and completely reacting the active sponge palladium black with glacial acetic acid on the premise of not adding any aid; and concentrating, crystallizing and drying to prepare red-brown palladium acetate crystals. The key technology of the method is that: a foaming agent is added into a chloropalladite reduction system for reducing palladium ions into the floating active sponge palladium black, and the problem that the reaction between the active sponge palladium black and the glacial acetic acid is slow and incomplete is effectively solved on the premise of not adding any aid into a reaction system of the active sponge palladium black and the glacial acetic acid. The method for preparing the palladium acetate compound has the advantages of short reaction time, easy control, high stability, repeated use of glacial acetic acid, high product purity, yield of over 99 percent, and capacity of overcoming the defect of using nitric acid as an aid in the prior art.

Description

technical field

[0001] The invention belongs to the field of fine chemical industry, and relates to a preparation method of palladium acetate compound. Background technique

[0002] Palladium acetate is a yellow-brown or red-brown uniform powder with a palladium content of 47.0%. It is stored in a sealed and dry environment at room temperature and is stable in the air. It is soluble in acetic acid, toluene, palladium acetate, chloroform, dichloromethane, acetone, acetonitrile and ether, and insoluble in water. Palladium acetate has a wide range of uses. It is a raw material for the synthesis of other palladium compounds, especially the precursor of metal palladium organic compounds; it is usually used as a catalyst precursor, and it is also an oxidation addition, cross-coupling, Suzuki coupling, cycloisomerization Catalysts for reactions such as oxidation and olefin aromatization; it can also be used in large quantities to prepare palladium plating bath solution.

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