发明名称 |
Processes for producing 2,3,3,3-tetrafluoropropene and/or 1,2,3,3-tetrafluoropropene |
摘要 |
A process is disclosed for making CF3CF═CH2 or mixtures thereof with CHF2CF═CHF. This process involves (a) reacting CHCl2CF2CF3, and optionally CHClFCF2CClF2, with H2 in the presence of a catalytically effective amount of a hydrogenation catalyst to form CH3CF2CF3 and, when CHClFCF2CClF2 is present, CH2FCF2CHF2; (b) dehydrofluorinating CH3CF2CF3, and optionally any CH2FCF2CHF2, from (a) to form a product mixture including CF3CF═CH2 and, if CH2FCF2CHF2 is present, CHF2CF═CHF; and optionally (c) recovering CF3CF═CH2, or a mixture thereof with CHF2CF═CHF from the product mixture formed in (b) and/or (d) separating at least a portion of any CHF2CF═CHF in the product mixture formed in (b) from the CF3CF═CH2 in the product mixture formed in (b). |
申请公布号 |
US8133406(B2) |
申请公布日期 |
2012.03.13 |
申请号 |
US20070446063 |
申请日期 |
2007.10.31 |
申请人 |
NAPPA MARIO JOSEPH;RAO VELLIYUR NOTT MALLIKARJUNA;SIEVERT ALLEN CAPRON;E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
NAPPA MARIO JOSEPH;RAO VELLIYUR NOTT MALLIKARJUNA;SIEVERT ALLEN CAPRON |
分类号 |
C09K5/04;C07C17/25;C11D7/30 |
主分类号 |
C09K5/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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