METHOD FOR PREPARING 1,1,1,2-TETRAFLUOROETHANE

METHOD FOR PREPARING 1,1,1,2-TETRAFLUOROETHANE

FIELD: organic chemistry, chemical technology. ^ SUBSTANCE: invention relates to a method for preparing fluoro-organic compounds. Method involves the gas-phase catalytic hydrofluorination of trifluoroethylene at increased temperature in the presence of the chrome-magnesium-fluoride catalyst comprisi...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: DMITRIEV A.V, TRUKSHIN I.G, BARABANOV V.G
Format: Patent
Sprache:eng ; rus
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:FIELD: organic chemistry, chemical technology. ^ SUBSTANCE: invention relates to a method for preparing fluoro-organic compounds. Method involves the gas-phase catalytic hydrofluorination of trifluoroethylene at increased temperature in the presence of the chrome-magnesium-fluoride catalyst comprising 8-24 wt.-% of trivalent chrome fluoride uniformly distributed in magnesium fluoride with the dispersity index from 0.125 to 0.315 mm. The process is carried out at temperature 140-190C and time contact for 4.5 s. Method provides the high yield of 1,1,1,2-tetrafluoroethane with selectivity index up to 99.9%. ^ EFFECT: improved preparing method. ^ 2 tbl, 7 ex