发明授权
US5300710A Process for the manufacture of 2-chloro-1,1,1,2-tetrafluoroethane and
pentafluoroethane
失效
制备2-氯-1,1,1,2-四氟乙烷和五氟乙烷的方法
- 专利标题： Process for the manufacture of 2-chloro-1,1,1,2-tetrafluoroethane and pentafluoroethane
- 专利标题（中）： 制备2-氯-1,1,1,2-四氟乙烷和五氟乙烷的方法
-
申请号： US672870申请日： 1991-03-20
-
公开(公告)号： US5300710A公开(公告)日： 1994-04-05
- 发明人: David R. Corbin , V. N. Mallikarjuna Rao
- 申请人： David R. Corbin , V. N. Mallikarjuna Rao
- 申请人地址： DE Wilmington
- 专利权人： E. I. Du Pont de Nemours and Company
- 当前专利权人： E. I. Du Pont de Nemours and Company
- 当前专利权人地址： DE Wilmington
- 主分类号： B01J27/138
- IPC分类号： B01J27/138 ; B01J23/06 ; B01J27/125 ; C07B61/00 ; C07C17/20 ; C07C17/08
摘要：
A process is disclosed for producing HCFC-124 and HFC-125 which includes reacting certain pentahaloethane starting materials (e.g., CF.sub.3 CHCl.sub.2) in the gaseous phase at an elevated temperature in the presence of certain supported metal catalysts containing effective amounts of zinc. A catalyst of metal fluoride on a fluorinated alumina support having an atomic ratio of F to Al of at least 2.7:1 and containing .beta.-aluminmum fluoride, is employed.
信息查询
