Preparation method of Pd complex compound loading catalyst

Abstract

A carried Pd complex catalyst with high hydrogenation reaction activity is prepared through ion exchanging reaction between lysine hydrochloride and exchangeable inorganic carrier, complexing reaction on H2PdCl4 to generate Pd-lysine complex, and reducing reaction to obtain PdO-lysinolinorganic carrier catalyst.

Description

technical field [0001] The invention relates to a preparation method of a Pd complex-supported catalyst, more specifically, to a preparation method for synthesizing a supported Pd complex catalyst by an anchoring method. Background technique [0002] The supported Pd catalyst is a generally applicable mild hydrogenation catalyst, and the active center of the hydrogenation reaction is Pd 0 . Using the general impregnation method, and then reducing the prepared Pd 0 Catalyst, its metal Pd particle diameter is generally 10-30nm. Because only the Pd on the surface of metallic Pd particles 0 Participate in the catalytic reaction, so when the impregnation amount of noble metal is the same, the smaller the metal Pd particle is, the higher its reactivity is. Activated carbon in the inorganic carrier has the characteristics of large specific surface and fine particles, so the Pd / C catalyst prepared by impregnation method is the most commonly used hydrogenation catalyst in fine ch...

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Problems solved by technology

Generally, the organic metal compound is anchored by the interaction between the hydroxyl group on the surface of the support. Because the preparation conditions of the organometallic compound are relatively harsh, the cost of the metal complex catalyst prepared by this method is relatively high, which limits its wide application.