2-chloro-3, 3, 3-trifluoropropene production method capable of prolonging service life of catalyst

• Main Authors: ZHANG ZHAOXI, TIAN DINGLEI, MIAO BAOYU, YANG MENGHE, ZHANG YAN, DING CHEN, LI HANSHENG, NIU WEI
• Format: Patent
• Language: Chinese; English
• Published: 23.09.2022
• 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 production methods of 2-chloro-3, 3, 3-trifluoropropene (HFO-1233xf), and particularly relates to a 2-chloro-3, 3, 3-trifluoropropene production method capable of prolonging the service life of a catalyst. The method comprises the following steps: firstly, activating a Cr2O3 catalyst, then taking 1, 1, 2, 3-tetrachloropropene as an initial raw material, taking hydrogen fluoride as a fluorinating agent, adding the activated Cr2O3 catalyst and a compound polymerization inhibitor, heating to 220-300 DEG C under the action of auxiliary gas, and carrying out gas-phase fluorination reaction to obtain the 2-chloro-3, 3, 3-trifluoropropene. The 2-chloro-3, 3, 3-trifluoropropene production method provided by the invention is low in cost, simple in reaction process and easy to implement and operate, the yield of the produced 2-chloro-3, 3, 3-trifluoropropene is high, the service life of the adopted catalyst is prolonged, and the stability is strong. 本发明属于2-氯-3,3,3-三氟丙烯（HF