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1.发明授权METHOD FOR PRODUCING FLUORINATED ORGANIC COMPOUNDS 有权VERFAHREN ZUR HERSTELLOW FLUORINIERTER有机化学家VERBINDUNGEN
公开(公告)号：EP1968922B1
公开(公告)日：2015-04-22
申请号：EP07716229.5
申请日：2007-01-03
发明人： TUNG, Hsueh Sung , MUKHOPADHYAY, Sudip , VAN DER PUY, Michael , MA, Jing, Ji , BORTZ, Cheryl , LIGHT, Barbara , PHILLIPS, Steven, D. , DUBEY, Rajesh , MERKEL, Daniel C.
IPC分类号： C07C17/087 , C07C21/19 , C09K5/00
CPC分类号： C07C19/10 , C07C17/04 , C07C17/06 , C07C17/087 , C07C17/206 , C07C17/21 , C07C17/25 , C07C21/18 , C07C19/01 , C07C21/073
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公开(公告)号：EP1968922A2
公开(公告)日：2008-09-17
申请号：EP07716229.5
申请日：2007-01-03
发明人： TUNG, Hsueh Sung , MUKHOPAHYAY, Sudip , VAN DER PUY, Michael , MA, Jing, Ji , BORTZ, Cheryl , LIGHT, Barbara , PHILLIPS, Steven, D. , DUBEY, Rajesh , MERKEL, Daniel C.
IPC分类号： C07C17/087 , C07C21/19 , C09K5/00
CPC分类号： C07C19/10 , C07C17/04 , C07C17/06 , C07C17/087 , C07C17/206 , C07C17/21 , C07C17/25 , C07C21/18 , C07C19/01 , C07C21/073
摘要： Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CF3CF=CH2 (1234yf). Three steps may be used in preferred embodiments in which a feedstock such as CCI2=CCICH2CI (which may be purchased or synthesized from 1,2,3- trichloropropane) is fluorinated (preferably with HF in gas-phase in the presence of a catalyst) to synthesize a compound such as CFaCCl=CH2, preferably in a 80-96% selectivity. The CF3CCl=CH2 is preferably converted to CF3CFClCH3 (244-isomer) using a SbCl5 as the catalyst which is then transformed selectively to 1234yf, preferably in a gas-phase catalytic reaction using activated carbon as the catalyst. For the first step, a mixture Of Cr2O3 and FeCl3/C is preferably used as the catalyst to achieve high selectivity to CF3CCl=CH2 (96%). In the second step, SbCl5/C is preferably used as the selective catalyst for transforming 1233xf to 244-isomer, CF3CFClCH3. The intermediates are preferably isolated and purified by distillation and used in the next step without further purification, preferably to a purity level of greater than about 95%.
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