A catalyst for the acetylation of propylene to produce allyl acetate and a method for its preparation
By using bimetallic catalysts of palladium (Pd) and antimony (Sb), combined with potassium acetate promoter and a support with a specific pore size, the problems of low catalyst activity and poor stability in existing technologies have been solved, achieving efficient preparation of allyl acetate.
CN119549199BActive Publication Date: 2026-06-09SHANGHAI JIAOTONG UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI JIAOTONG UNIV
- Filing Date
- 2023-08-28
- Publication Date
- 2026-06-09
AI Technical Summary
Technical Problem
Existing acetyl oxidation methods for preparing allyl acetate have catalysts with low activity and low selectivity, and the addition of water limits the yield and increases energy consumption, while also exhibiting poor catalyst stability.
Method used
The catalyst uses bimetallic palladium (Pd) and antimony (Sb) as active components, potassium acetate as an auxiliary agent, and TiO2 or Al2O3/SiO2 as the support, with an average pore size of 20-100 nm, forming an eggshell-shaped structure.
Benefits of technology
This improved the activity, selectivity, and stability of the catalyst, thereby increasing the yield and purification efficiency of allyl acetate.
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Figure CN119549199B_ABST
Abstract
The present application relates to a kind of catalyst for preparing allyl acetate by propylene acetylation and its preparation method.The catalyst includes carrier, active component and adjuvant, the average pore size of the carrier is between 20nm and 100nm, the active component is bimetallic palladium Pd and antimony Sb, and the adjuvant is potassium acetate.The present application mainly solves the problems of low conversion rate, low selectivity and short service life of the catalyst used in the current propylene acetylation reaction.Compared with prior art, the catalyst of the present application has the advantages of high conversion rate and high selectivity for propylene acetylation reaction, and solves the problem of poor stability of existing catalyst.
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