A trace nickel-doped nickel-cobalt oxide magnetic catalyst, a preparation method and application thereof

By preparing a nickel-cobalt oxide catalyst with trace amounts of nickel doping, the problems of low efficiency and poor stability of inexpensive metal catalysts in the hydrogenation process of 5-hydroxymethylfurfural were solved, realizing the production of 2,5-dimethylfuran in a highly efficient and environmentally friendly manner, which is suitable for the selective hydrogenation reaction of biomass-based platform compounds.

CN120679539BActive Publication Date: 2026-06-09INT CENT FOR BAMBOO & RATTAN
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
INT CENT FOR BAMBOO & RATTAN
Filing Date
2025-06-30
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing inexpensive metal catalysts for the selective hydrogenation of 5-hydroxymethylfurfural to 2,5-dimethylfuran suffer from problems such as cumbersome preparation process, low catalytic hydrogenolysis efficiency, harsh reaction conditions, and poor cycle stability.

Method used

A trace amount of nickel-doped nickel-cobalt oxide magnetic catalyst was prepared by mixing inexpensive biomass-based carbon source compounds with metal salts in an acidic aqueous solution, followed by freeze-drying and high-temperature pyrolysis. The trace amount of metallic Ni modulates the electronic structure of CoOx and oxygen vacancies, thereby promoting the hydrogenolysis reaction.

Benefits of technology

The catalyst achieves high yield and high selectivity of 5-hydroxymethylfurfural to 2,5-dimethylfuran under mild conditions. It has good cycle stability, is easy to recover and separate, and is in line with the concept of green and sustainable development.

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Abstract

The present application relates to a kind of trace nickel doped nickel cobalt oxide catalyst and its application of catalytic hydrogenation 5-hydroxymethyl furfural to prepare 2,5-dimethyl furan.The present application is rich in chitosan chelated metal nickel (trace) with metal cobalt, freeze-dried to obtain catalyst precursor, catalyst precursor is calcined under nitrogen atmosphere at high temperature to obtain NiCo@C magnetic catalyst.The preparation method of the NiCo@C catalyst is simple, low in cost, strong in cycle stability, high in catalytic activity and product selectivity, and has industrial economic practicability.The catalyst can realize 5-hydroxymethyl furfural 100% conversion under relatively mild reaction conditions, and the yield of 2,5-dimethyl furan is as high as 96.9%.Simple magnetic method is used to separate and recover the catalyst, which is suitable for industrial scale application.
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