Title:
NEW GREEN PREPARATION METHOD FOR TRIFLUOROCHLOROETHYLENE
Document Type and Number:
WIPO Patent Application WO/2016/008257
Kind Code:
A1
Abstract:
Disclosed is a new green preparation method for trifluorochloroethylene. The method is as follows: in a tubular reactor, 1,1,2-trifluoro-1,2,2-trichloroethane and a catalyst (potassium zinc trihydride) are directly involved in a hydrogenation reaction to generate trifluorochloroethylene, wherein the temperature of the above-mentioned catalytic reaction is 250°C-350°C, the reaction pressure is 0.7-1.0 MPa, and the residence time is 10-20 seconds. The traditional process where zinc powder is used for dechlorination or hydrogen is used for dechlorination through hydrogenation under the action of a noble metal catalyst is avoided throughout the process of the present invention. The present process substantially reduces the production cost of trifluorochloroethylene, and substantially increases the product yield, and the product yield can reach 99% or more.
Inventors:
SI LINXU (CN)
ZHANG PINGZHONG (CN)
GU HEXIANG (CN)
ZHANG PINGZHONG (CN)
GU HEXIANG (CN)
Application Number:
PCT/CN2014/093346
Publication Date:
January 21, 2016
Filing Date:
December 09, 2014
Export Citation:
Assignee:
CHANGSHU 3F FLUORINE CHEMICAL CO LTD (CN)
International Classes:
C07C17/23; B01J31/12; C07C21/18
Foreign References:
| CN1980874A | 2007-06-13 | |||
| CN102395547A | 2012-03-28 |
Attorney, Agent or Firm:
JIANGSU SUNDY LAW FIRM (CN)
江苏圣典律师事务所 (CN)
江苏圣典律师事务所 (CN)
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