发明授权
- 专利标题: Process for reducing the fluorine content of halocarbons
- 专利标题(中): 降低卤代烃含氟量的方法
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申请号: US148032申请日: 1993-11-05
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公开(公告)号: US5345017A公开(公告)日: 1994-09-06
- 发明人: V. N. Mallikarjuna Rao , Steven H. Swearingen
- 申请人: V. N. Mallikarjuna Rao , Steven H. Swearingen
- 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: B01J21/04
- IPC分类号: B01J21/04 ; B01J23/06 ; B01J23/26 ; B01J27/12 ; B01J27/20 ; B01J32/00 ; C07B61/00 ; C07C17/00 ; C07C17/20 ; C07C17/358 ; C07C19/10 ; C07C19/14 ; C07C17/34 ; C07C19/08
摘要:
The fluorine content of an acyclic saturated compound of the formula C.sub.n F.sub.a X.sub.b having at least one carbon with at least two fluorine substituents (wherein each X is independently selected from Cl and Br, and wherein n is 1 to 4, a is 2 to 10, b is 0 to 8, and a+b equals 2n+2) is reduced by reacting the acyclic saturated compound with HCl in the vapor phase at an elevated temperature in the presence of a catalyst, the mole ratio of HCl to the acyclic saturated compound being at least about 2:1.
公开/授权文献
- US6018175A Gapped-plate capacitor 公开/授权日:2000-01-25
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