发明授权
- 专利标题: Catalytic production processes for making tetrafluoropropenes and pentafluoropropenes
- 专利标题(中): 用于制备四氟丙烯和五氟丙烯的催化生产方法
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申请号: US12373594申请日: 2007-07-11
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公开(公告)号: US07982073B2公开(公告)日: 2011-07-19
- 发明人: Mario Joseph Nappa , Velliyur Nott Mallikarjuna Rao
- 申请人: Mario Joseph Nappa , Velliyur Nott Mallikarjuna Rao
- 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/US2007/015751 WO 20070711
- 国际公布: WO2008/008350 WO 20080117
- 主分类号: C07C17/25
- IPC分类号: C07C17/25
摘要:
A process is disclosed for making CF3CF═CHF. The process involves contacting at least one hexafluoropropane selected from the group consisting of CF3CF2CH2F and CF3CHFCHF2 with a chromium oxyfluoride catalyst in a reactor to obtain a product mixture comprising CF3CF═CHF, and recovering CF3CF═CHF from the product mixture.A process is disclosed for making CF3CH═CHF. The process involves contacting CF3CH2CHF2 with a chromium oxyfluoride catalyst in a reactor to obtain a product mixture comprising CF3CH═CHF, and recovering CF3CH═CHF from the product mixture.A process is disclosed for making CF3CF═CH2. The process involves contacting CF3CF2CH3 with a chromium oxyfluoride catalyst in a reactor to obtain a product mixture comprising CF3CF═CH2, and recovering CF3CF═CH2 from the product mixture.
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