A process for the preparation of cis-1-chloro-2,3,3-trifluoropropene

The preparation of cis-1-chloro-2,3,3-trifluoropropylene by means of a Cr/Al/Zn fluorination catalyst under specific conditions solves the problems of cumbersome preparation methods and numerous by-products in existing technologies, achieving high selectivity and high yield, and possessing environmental and economic advantages.

CN122102832APending Publication Date: 2026-05-29JUHUA GROUP TECH CENT +1
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JUHUA GROUP TECH CENT
Filing Date
2026-02-02
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing methods for preparing 1-chloro-2,3,3-trifluoropropene are cumbersome and produce many byproducts, making it difficult to achieve high selectivity and efficiency.

Method used

Cis-1-chloro-2,3,3-trifluoropropylene was prepared by gas-phase fluorination reaction using a Cr/Al/Zn fluorination catalyst under specific conditions. A mixed slurry was prepared using soluble chromium salt, soluble aluminum salt, soluble zinc salt and surfactant, and the electronic structure and reaction pathway of the catalyst were optimized by calcination and fluorination treatment.

Benefits of technology

The preparation of cis-1-chloro-2,3,3-trifluoropropylene with high selectivity and high yield has been achieved, simplifying the process, reducing solvent use and waste emissions, and demonstrating environmental friendliness and economic efficiency.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122102832A_ABST
    Figure CN122102832A_ABST
Patent Text Reader

Abstract

The application discloses a preparation method of cis-1-chloro-2,3,3-trifluoropropene and belongs to the technical field of organic synthesis. The method is characterized in that: firstly, a mixed slurry is prepared by using a soluble aluminum salt, a soluble chromium salt, a soluble zinc salt, a surfactant and water as raw materials; the mixed slurry is dried, calcined and fluorinated to obtain a Cr / Al / Zn fluorination catalyst; and then, under the action of the Cr / Al / Zn fluorination catalyst, gas-phase fluorination reaction is carried out by using 1,1,2,3,3-pentachloropropane and hydrogen fluoride gas as reaction raw materials to obtain cis-1-chloro-2,3,3-trifluoropropene. The method is simple and efficient, the reaction is carried out under the action of a specific catalyst, the selectivity of the product is high, the conversion rate of the raw material is high, the method is green and environment-friendly, and less "three wastes" are generated.
Need to check novelty before this filing date? Find Prior Art