Catalyst for preparing cinnamyl alcohol through selective hydrogenation of cinnamyl aldehyde as well as preparation method and application of catalyst

Nanoparticle Pt-WOx catalysts were prepared by ultraviolet light co-reduction method, and a high-density Pt-WOx interface was constructed. This solved the problem of designing active sites at the catalyst interface, and achieved high conversion and high selectivity in the selective hydrogenation reaction of cinnamaldehyde, thus improving the catalytic performance.

CN122076432APending Publication Date: 2026-05-26INST OF COAL CHEM CHINESE ACAD OF SCI
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Patent Information

Application Number
CN202610208045.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-12
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In the selective hydrogenation of cinnamaldehyde to cinnamyl alcohol, existing catalysts struggle to achieve precise design and efficient utilization of interfacial active sites, limiting the improvement of catalytic performance. Furthermore, traditional methods are unable to establish clear structure-activity relationships.

Method used

Nanoparticle Pt-WOx catalysts were prepared using ultraviolet light co-reduction method. By simultaneously nucleating and growing at the nanoscale, a high-density Pt-WOx interface was constructed, achieving close proximity between the active component and the support. The interface structure and performance were precisely controlled by combining photodeposition strategy.

Benefits of technology

The catalyst significantly improved the conversion rate and selectivity of the selective hydrogenation reaction of cinnamaldehyde, reduced the activation energy of the reaction, and exhibited superior reaction kinetics performance, thus solving the problem of low selectivity of C=O bonds.

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Abstract

The invention provides a catalyst for preparing cinnamyl alcohol through selective hydrogenation of cinnamyl aldehyde as well as a preparation method and application of the catalyst, and relates to the field of catalysts. The catalyst for preparing cinnamyl alcohol through selective hydrogenation of cinnamyl aldehyde comprises an active component, a metal additive and a carrier, the active component is a nano Pt cluster, the metal additive is W, and the carrier is a porous material; the active component and the metal additive exist inside and on the outer surface of a pore channel of the carrier in the form of a composite nanocluster. The preparation method of the catalyst comprises the following steps: mixing a water-soluble tungsten salt precursor, ethylene glycol and water, and adjusting the pH to strong acidity to obtain a metal additive solution; adding the Pt precursor into a metal additive solution, and carrying out photoprecipitation reaction under ultraviolet irradiation to obtain tungsten oxide modified Pt nano-particle sol; and adding the carrier into the Pt nanoparticle sol, stirring, dipping, adsorbing, washing and drying to obtain the catalyst. The catalyst provided by the invention shows remarkable and excellent selectivity on the target product cinnamyl alcohol.
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