Bimetallic coni-zif-derived coni@cn catalysts and their preparation and catalytic hydrogenation applications

Abstract

The invention discloses a CoNi@CN catalyst derived from bimetallic CoNi-ZIF and its preparation method and its application in catalytic epoxide hydrogenation. The preparation method comprises the following steps: after fully mixing cobalt salt, nickel salt and alcohol, Obtain solution A; mix P123 and alcohol fully to obtain solution B; add solution B to solution A in batches to obtain mixed solution C and stir evenly; mix imidazoles and alcohol evenly and add to solution C to obtain Mixed solution D; Mixed solution D is fully stirred and reacted at alcohol reflux temperature, obtains CoNi-ZIF metal-organic framework material; H 2 The hydrogenation catalyst is obtained by pyrolysis reduction treatment. The catalyst prepared by the present invention has low cost, high hydrogenation reaction conversion rate and good product selectivity, and can be applied to catalyze epoxy compounds and H 2 The hydrogenation reaction prepares aromatic alcohols, alicyclic alcohols and aliphatic alcohols, which greatly improves the conversion rate of epoxy compounds and the selectivity of alcohols.

Description

Bimetallic CoNi‑ZIF-derived CoNi@CN catalyst and its preparation method and catalysis Hydrogenation applications technical field The present invention relates to the field of epoxide hydrogenation, specifically refers to the CoNi@CN catalyst derived from bimetallic CoNi-ZIF The preparation method thereof and the application of catalytic epoxide hydrogenation. Background technique Alcohol is a kind of important biomass platform compound, it is the fine chemical industry such as detergent, surfactant, plastic plasticizer. The basic raw material of the product, with a large amount and high added value, is widely used in medicine, food, cosmetics, plastics, antioxidants and other industries middle. Hydrogenation is a kind of important means that epoxy compound prepares alcohol compound, and preparing cyclohexanol with epoxy cyclohexane is For example, the current technology mainly prepares cyclohexanol by reacting epoxy cyclohexane with a hydrogenation reagent, and t...

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Problems solved by technology

In the Chinese patent CN1546444A, the catalyst used is to load Pd-B on NaY, MCM41, β molecular sieve, and metal oxides by the equal volume impregnation method. Although the hydrogenation activity is high, the expensive noble metal catalyst is used.

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