发明授权
US07663007B2 Process for the preparation of 1,3,3,3-tetrafluoropropene and/or 1,1,3,3,3-pentafluoropropene
失效
制备1,3,3,3-四氟丙烯和/或1,1,3,3,3-五氟丙烯的方法
- 专利标题： Process for the preparation of 1,3,3,3-tetrafluoropropene and/or 1,1,3,3,3-pentafluoropropene
- 专利标题（中）： 制备1,3,3,3-四氟丙烯和/或1,1,3,3,3-五氟丙烯的方法
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申请号： US11988259申请日： 2006-08-04
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公开(公告)号： US07663007B2公开(公告)日： 2010-02-16
- 发明人: Velliyur Nott Mallikarjuna Rao , H. David Rosenfeld , Allen Capron Sievert , Shekhar Subramoney
- 申请人： Velliyur Nott Mallikarjuna Rao , H. David Rosenfeld , Allen Capron Sievert , Shekhar Subramoney
- 申请人地址： US 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： US DE Wilmington
- 国际申请： PCT/US2006/030534 WO 20060804
- 国际公布： WO2007/019358 WO 20070215
- 主分类号： C07C17/00
- IPC分类号： C07C17/00
摘要：
A process for the manufacture of CF3CH═CHF and/or CF3CH═CF2 is disclosed. The process involves (a) reacting HF and at least one halopropene of the formula CX3CCI═CCIX (where each X is independently F or CI) to produce a product including both CF3CCI═CF2 and CF3CHCICF3; (b) reacting CF3CCI═CF2 and/or CF3CHCICF3 produced in (a) with hydrogen to produce a product including CF3CH2CHF2 and/or CF3CH2CF3; (c) dehydrofluorinating CF3CH2CHF2 and/or CF3CH2CF3 produced in (b) to produce a product comprising CF3CH═CHF and/or CF3CH═CF2; and (d) recovering CF3CH═CHF and/or CF3CH═CF2 from the product produced in (c). In (a), the CF3CCI═CF2 and CF3CHCICF3 are produced in the presence of a fluorination catalyst comprising at least one chromium-containing component selected from (i) a crystalline alpha-chromium oxide where at least 0.05 atom % of the chromium atoms in the alpha-chromium oxide lattice are replaced by divalent copper, and (ii) a chromium-containing composition of (i) which has been treated with a fluorinating agent.
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