发明名称 |
Catalytic gas phase fluorination of 1,1,2-trichloroethane and/or 1,2-dichloroethene to produce 1-chloro-2,2-difluoroethane |
摘要 |
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. |
申请公布号 |
US9000242(B2) |
申请公布日期 |
2015.04.07 |
申请号 |
US201214350838 |
申请日期 |
2012.10.11 |
申请人 |
Bayer Intellectual Property |
发明人 |
Lui Norbert;Pamulaparthy Shanthan Rao;Pvss Srinivas;Vijaya Thomas;Madabhushi Sridhar;Yadla Rambabu;Banda Narsaiah;Pazenok Sergii |
分类号 |
C07C17/35;C07C17/21;B01J27/138;B01J23/86 |
主分类号 |
C07C17/35 |
代理机构 |
Miles & Stockbridge P.C. |
代理人 |
Miles & Stockbridge P.C. |
主权项 |
1. A process for preparation of 1-chloro-2,2-difluoroethane comprising a catalytic gas phase fluorination of 1,1,2-trichloroethane comprising using a catalyst which is prepared by co-depositing FeCl3 and MgCl2 on chromia-alumina and which has been fluorinated by treating the catalyst with a fluorine containing activation agent at a temperature not exceeding 400° C. |
地址 |
Monheim DE |