METHOD FOR PREPARING 2,3,3,3-TETRAFLUOROPROPENE

METHOD FOR PREPARING 2,3,3,3-TETRAFLUOROPROPENE

Disclosed in the present disclosure is a method for preparing 2,3,3,3-tetrafluoropropene. The method includes a two-step method for preparing 2,3,3,3-tetrafluoropropene, a method for co-producing 2,3,3,3-tetrafluoropropene and 1-chloro-2,3,3,3-tetrafluoropropene, and a method for co-producing 2,3,3,...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: ZHANG, Jianjun, LIU, Wucan, XIAO, Xinbao, LIU, Minyang, LUO, Xia, LIN, Shengda, YU, Wanjin
Format: Patent
Sprache:eng
Schlagworte:
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
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Disclosed in the present disclosure is a method for preparing 2,3,3,3-tetrafluoropropene. The method includes a two-step method for preparing 2,3,3,3-tetrafluoropropene, a method for co-producing 2,3,3,3-tetrafluoropropene and 1-chloro-2,3,3,3-tetrafluoropropene, and a method for co-producing 2,3,3,3-tetrafluoropropene and 1-chloro-3,3,3-trifluoropropene. The two-step method for preparing 2,3,3,3-tetrafluoropropene includes: A1, a telomerization step: subjecting chlorofluoromethane and trifluoroethylene to a pressure telomerization reaction under the action of a telomerization catalyst to prepare 3-chloro-1,1,1,2-tetrafluoropropane, wherein the telomerization catalyst is a Lewis acid catalyst or a mixed catalyst of a Lewis acid catalyst and dichloromethane; and A2, a dehydrochlorination step: subjecting the 3-chloro-1,1,1,2-tetrafluoropropane to dehydrochlorination under the catalytic action of activated carbon to obtain 2,3,3,3-tetrafluoropropene. The method for preparing 2,3,3,3-tetrafluoropropene has the advantages of a simple process, high product selectivity, mild reaction conditions and the like.