MOFs catalyst as well as preparation method and application thereof

By synthesizing stable aluminum-based MOFs via a hydrothermal method and loading noble metals via an impregnation reduction method, the problem of easy detachment of noble metal nanoparticles was solved, resulting in a highly active and reusable noble metal catalyst suitable for the hydrogenation reaction of unsaturated rubber.

CN122164501APending Publication Date: 2026-06-09BEIJING UNIV OF CHEM TECH
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Patent Information

Application Number
CN202610324393.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-17
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

When existing heterogeneous catalysts are loaded with noble metal nanoparticles, the MOF structure is easily destroyed, the noble metal nanoparticles are easily detached, and the catalytic activity is limited. It is difficult to effectively hydrogenate unsaturated rubber under mild conditions, and the reusability is poor.

Method used

Stable aluminum-based MOFs were synthesized by hydrothermal method, and noble metals were loaded by impregnation reduction method to form a catalyst with strong interaction between noble metals and aluminum-based MOFs. The catalyst with highly dispersed noble metals was obtained by gas-phase reduction technology in a hydrogen-argon mixed atmosphere.

Benefits of technology

It achieves strong interaction between noble metals and aluminum-based MOFs, resulting in a catalyst with stable properties, good morphology, high activity, and good hydrogenation selectivity, and can be recycled and reused multiple times.

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Abstract

The invention relates to the field of catalysts, in particular to an MOFs catalyst and a preparation method and application thereof. The method comprises the following steps: by taking aluminum-based MOF as a carrier, loading noble metal through an impregnation reduction method, and then carrying out gas-phase reduction, wherein the aluminum-based MOF is synthesized by taking a precursor and an organic ligand as raw materials through a hydrothermal method, the metal precursor is aluminum salt or hydrated aluminum salt, and the organic ligand is selected from one or more of square acid, terephthalic acid, 2-fluoroterephthalic acid, diphenyldicarboxylic acid, dipyridyl, dipyridyl dicarboxylic acid, trimesic acid, pyromellitic acid and pyromellitic acid; the noble metal includes a Pd salt. According to the method, the stable aluminum-based MOFs can be prepared, the catalyst with strong interaction between the precious metal and the aluminum-based MOFs is obtained, and the MOFs catalyst is stable in property, excellent in performance, good in morphology, high in activity and good in double bond selectivity; the MOFs catalyst can be recycled through centrifugation and can be reused for multiple times.
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