Modified solid base catalyst, preparation method and application
By modifying the magnesium-aluminum hydrotalcite solid base catalyst and introducing γ-Al2O3, the problems of low catalytic activity and poor recycling ability of the existing catalysts are solved, and high yield and sustainable monoglyceride preparation are achieved.
CN119633795APending Publication Date: 2025-03-18SICHUAN UNIV
1 Cites 0 Cited by
Patent Information
- Application Number
- CN202411890445.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-03-18
AI Technical Summary
Technical Problem
The existing solid base catalysts have low catalytic activity in the preparation of monoglycerides and have poor recycling capabilities, making it difficult to achieve high yields and sustainable production.
Method used
Potassium salt is used to modify the solid alkali catalyst of magnesium aluminum hydrotalcite, and γ-Al2O3 is introduced into the catalyst. The modified solid alkali catalyst is prepared by impregnation method to improve its alkalinity and recycling ability.
Benefits of technology
The yield of monoglycerides is significantly improved and the reusable capacity of the catalyst is improved, making it more suitable for industrial applications.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a modified solid base catalyst, a preparation method and application, the preparation method comprises the following steps: potassium salt, magnesium-aluminum hydrotalcite and gamma-Al2O3 are used as raw materials, the modified solid base catalyst is prepared by an impregnation method, and the potassium salt comprises at least one of alkaline potassium salt and salt capable of being decomposed to obtain potassium oxide. The potassium salt is adopted to modify the magnesium-aluminum hydrotalcite solid base catalyst, hydrotalcite is an alkaline molecular sieve and has good catalytic activity due to a unique lamellar large-framework structure and a high specific surface area, and the alkalinity of the solid base catalyst can be further enhanced by introduction of the potassium salt, so that the solid base catalyst has good catalytic activity. Therefore, the yield of monoglyceride can be improved when the catalyst is applied to preparation of monoglyceride by a transesterification method; meanwhile, gamma-Al2O3 is introduced into the catalyst, so that the repeated use capability of hydrotalcite can be improved while the excellent catalytic performance of hydrotalcite is retained, and industrial application is facilitated.
Need to check novelty before this filing date? Find Prior Art