Invention Grant
US09000242B2 Catalytic gas phase fluorination of 1,1,2-trichloroethane and/or 1,2-dichloroethene to produce 1-chloro-2,2-difluoroethane
有权
1,1,2-三氯乙烷和/或1,2-二氯乙烯的催化气相氟化生成1-氯-2,2-二氟乙烷
- Patent Title: Catalytic gas phase fluorination of 1,1,2-trichloroethane and/or 1,2-dichloroethene to produce 1-chloro-2,2-difluoroethane
- Patent Title (中): 1,1,2-三氯乙烷和/或1,2-二氯乙烯的催化气相氟化生成1-氯-2,2-二氟乙烷
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Application No.: US14350838Application Date: 2012-10-11
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Publication No.: US09000242B2Publication Date: 2015-04-07
- Inventor: Norbert Lui , Shanthan Rao Pamulaparthy , Srinivas Pvss , Thomas Vijaya , Sridhar Madabhushi , Rambabu Yadla , Narsaiah Banda , Sergii Pazenok
- Applicant: Bayer Intellectual Property GmbH
- Applicant Address: DE Monheim
- Assignee: Bayer Intellectual Property
- Current Assignee: Bayer Intellectual Property
- Current Assignee Address: DE Monheim
- Agency: Miles & Stockbridge P.C.
- Priority: IN2938/2011 20111012
- International Application: PCT/EP2012/070126 WO 20121011
- International Announcement: WO2013/053800 WO 20130418
- Main IPC: C07C17/35
- IPC: C07C17/35 ; C07C17/21 ; B01J27/138 ; B01J23/86
Abstract:
The invention is directed to a catalyst for the gas phase fluorination of 1,1,2-trichloroethane and/or 1,2-dichloroethene with HF to give 1-chloro-2,2-difluoroethane which catalyst is prepared by co-depositing FeCl3 and MgCl2 on chromia-alumina, or co-depositing Cr(NO3)3 and Ni(NO3)2 on active carbon, or by doping alumina with ZnCl2, and to a process for the preparation of 1-chloro-2,2-difluoroethane comprising a catalytic gas phase fluorination of 1,1,2-trichloroethane and/or 1,2-dichloroethene wherein one of the catalysts according to claim 2 or 3 is used.
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