Catalyst for preparing 1-chloro-3, 3, 3-trifluoropropene as well as preparation method and application of catalyst

• Main Authors: TIAN DINGLEI, MIAO BAOYU, YANG MENGHE, ZHANG YAN, DING CHEN, LI HANSHENG, NIU WEI, LI XINYING
• Format: Patent
• Language: Chinese; English
• Published: 31.01.2023
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention belongs to the technical field of fluorine chemical industry, and particularly relates to a catalyst for preparing 1-chloro-3, 3, 3-trifluoropropene as well as a preparation method and application of the catalyst. The catalyst is a chromium sesquioxide composite oxide doped with Zn < 2 + >, graphite and/or carbon nanotubes, wherein the chromium sesquioxide accounts for 60-80 wt%, the zinc oxide accounts for 10-20 wt%, and the graphite and/or carbon nanotubes account for 10-20 wt%; the catalyst is used in the preparation process of 1-chloro-3, 3, 3-trifluoropropene, 1, 1, 1, 3, 3-pentachloropropane and hydrogen fluoride are used as raw materials, and the 1-chloro-3, 3, 3-trifluoropropene is prepared through a gas phase fluorination reaction. When the catalyst is used for preparing 1-chloro-3, 3, 3-trifluoropropene, the catalyst has the advantages of high activity, high selectivity and long service life, and the product yield is high. 本发明属于氟化工技术领域，具体涉及1-氯-3,3,3-三氟丙烯制备用催化剂及其制备方法和应用。所述催化剂为掺杂Zn2+、石墨和