Carbon-carried palladium oxide catalyst, preparation method thereof and application thereof

Abstract

The invention discloses a carbon-carried palladium oxide catalyst, a preparation method thereof and an application thereof. The carbon-carried palladium oxide catalyst comprises a carrier, and metal active components carried by the carrier, wherein the metal active components are palladium oxide and palladium elementary substance, the carrier is active carbon, the weight percentage of the palladium element in the catalyst is 0.1-15%, and the weight percentage of bivalent palladium of the palladium oxide in the palladium element is 45-95%. The catalyst can be applied for selective hydrogenation of 1,4-butynediol to synthesize 1,4-butenediol, and shows high catalytic activity and high selectivity.

Description

technical field

[0001] The invention relates to a novel carbon-supported palladium oxide catalyst and its preparation method and application. Background technique

[0002] Supported palladium catalysts have high catalytic hydrogenation activity and are widely used in chemical production processes such as organic synthesis. However, in selective hydrogenation reactions such as hydrogenation of alkynes to olefins, supported palladium catalysts face selectivity technical difficulties.

[0003] 1,4-butenediol can be used to synthesize vitamin VB6, 1,2,4-butanetriol and its derivatives (1,4-butanediol, vinylpyrrolidone, γ-butyrolactone, 2,3-cyclo Oxygen-1,4-butanediol and PBT resin, etc.), are important organic intermediates for synthetic polymer materials, medicine, papermaking, etc. Traditionally, it is prepared by hydrogenation of 1,4-butynediol with Lindlar catalyst. Lindra catalyst is a selective catalytic hydrogenation catalyst consisting of palladium-lead attached to a ...

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