NOVEL PROCESS FOR MANUFACTURING 2-CHLORO-3,3,3-TRIFLUOROPROPENE FROM 1,2-DICHLORO-3,3,3-TRIFLUOROPROPENE

• Main Authors: WANG, Haiyou, TUNG, Hsueh Sung
• Format: Patent
• Language: English; French
• Published: 23.03.2017
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

The present disclosure relates to a process for preparing 2-chloro-3,3,3-trifluorpropene comprising: (a) hydrogenating 1,2-dichloro-3,3,3-trifluoropropene in the presence of a hydrogenation catalyst to form 1,1,1-trifluoro-2,3-dichloropropane and (b) dehydrochlorinating 1,1,1-trifluoro-2,3-dichloropropane in the presence of a dehydrochlorination catalyst to form 2-chloro-3,3,3-trifluorpropene. La présente invention concerne un procédé de préparation de 2-chloro-3,3,3-trifluorpropène comprenant les étapes consistant à : (a) à hydrogéner du 1,2-dichloro-3,3,3-trifluoropropène en présence d'un catalyseur d'hydrogénation pour former du 1,1,1-trifluoro -2,3-dichloropropane et (b) à déshydrochlorer le 1,1,1-trifluoro-2,3-dichloropropane en présence d'un catalyseur de déshydrochloration pour former du 2-chloro -3,3,3-trifluorpropène.