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Title:
METHOD OF MANUFACTURING PENTAFLUOROETHANE
Document Type and Number:
Japanese Patent JP2014111610
Kind Code:
A
Abstract:

To provide an efficient industrial manufacturing method suppressing fluorination reaction from perchloroethylene to pentafluoroethane.

There is provided a method of manufacturing pentafluoroethane including (i) a step of reacting perchloroethylene, and 2,2-dichloro-1,1,1-trifluoroethane and/or 2-chloro-1,1,1,2-tetrafluoroethane if the case may be, with hydrofluoric acid in a gass phase in a presence of a catalyst in a thermal insulation multistage reactor, and (ii) a step of separating stream manufactured in the step (i) for obtaining a fraction of a light product and a fraction of a heavy product. The catalyst is a chromium oxide (Cr2O3)-based catalyst in an oxidation state of more than zero and containing other metals selected from Ni, Co, Mn and Zn if the case may be, and a temperature at entrance of the fist stage of the heat insulation reactor is between 280 and 350°C, preferably between 320 and 340°C.


More Like This:
WO/1995/031422PROCESSES FOR THE PREPARATION OF FLUORINATED OLEFINS AND HYDROFLUOROCARBONS USING FLUORINATED OLEFIN
WO/2008/120652METHOD FOR PRODUCTION OF CHLORINATED AND FLUORINATED COMPOUND
Inventors:
COLLIER BERTRAND
GERALDINE CAVALLINI
BOUSSAND BEATRICE
Application Number:
JP2014002157A
Publication Date:
June 19, 2014
Filing Date:
January 09, 2014
Export Citation:
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Assignee:
ARKEMA FRANCE
International Classes:
C07C17/087; C07C17/20; C07C17/383; C07C19/08; C07B61/00
Domestic Patent References:
JPH09511515A1997-11-18
JPH10500956A1998-01-27
JPH04234823A1992-08-24
JPH08245438A1996-09-24
Foreign References:
WO1994020441A11994-09-15
WO2003045879A12003-06-05
Attorney, Agent or Firm:
Kawaguchi International Patent Office



 
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