摘要:
The invention relates to a process for preparing 2,3,3,3-tetrafluoropropene (CF3CF═CH2), performed using the steps of dehydrohalogenating 1,1,1,2,2-pentafluoropropane (CH3CF2CF3, HFC-245ca) 1,1,1,2-tetrafluoro-2-chloropropane, 1,1,1,2,3-pentafluoropropane (CH2FCHFCF3, HFC-245eb) and/or 1,1,1,2-tetrafluoro-3-chloropropane in the presence of a base, and converting a trifluorodichloropropane or a difluorotrichloropropane or a fluorotetrachloropropane to CH3CF2CF3, 1,1,1,2-tetrafluoro-2-chloropropane, CH2FCHFCF3, and/or 1,1,1,2-tetrafluoro-3-chloropropane.
摘要:
The invention relates to a process for preparing a compound of formula CF3CF═CHX, CHX2CX═CX2 or a linear or branched C4-7 (hydro)fluoroalkene, wherein each X is, independently, H or F provided that in CHX2CX═CX2 at least one X is F, which process comprises dehydrohalogenating a compound of formula CF3CFYCH2X, CF3CFHCYHX, CHX2CXYCX2H, CHX2CXHCX2Y, or a linear or branched C4-7 hydro(halo)fluoroalkane, wherein each X is, independently, H or F provided that in CHX2CXYCX2H and CHX2CXHCX2Y at least one X is F, wherein Y is F, Cl, Br, or I, in the presence of a base.
摘要翻译:本发明涉及制备式CF 3 CF = CHX,CHX 2 C X = C X 2或直链或支链C 4-7(氢)氟烯烃的化合物的方法,其中每个X独立地为H或F,条件是在CHX2CX = CX2中至少 一个X是F,该方法包括式CF 3 CFYCH 2 X,CF 3 CFHCYHX,CHX2CXYCX2H,CHX2CXHCX2Y或直链或支链C4-7氢(卤素)氟烷烃的化合物的脱卤化氢,其中每个X独立地为H或F,条件是在CHX2CXYCX2H和 CHX2CXHCX2Y至少一个X为F,其中Y为F,Cl,Br或I,在碱的存在下。
摘要:
The invention relates to a process for preparing a compound of formula CF3CF═CHX, CHX2CX═CX2 or a linear or branched C4-7 (hydro)fluoroalkene, wherein each X is, independently, H or F provided that in CHX2CX═CX2 at least one X is F, which process comprises dehydrohalogenating a compound of formula CF3CFYCH2X, CF3CFHCYHX, CHX2CXYCX2H, CHX2CXHCX2Y, or a linear or branched hydro(halo)fluoroalkane, wherein each X is, independently, H or F provided that in CHX2CXYCX2H and CHX2CXHCX2Y at least one X is F, wherein Y is F, Cl, Br, or I, in the presence of a base.
摘要翻译:本发明涉及制备式CF 3 CF = CHX,CHX 2 C X = C X 2或直链或支链C 4-7(氢)氟烯烃的化合物的方法,其中每个X独立地为H或F,条件是在CHX2CX = CX2中至少 一个X是F,该方法包括式CF 3 CFYCH 2 X,CF 3 CFHCYHX,CHX 2 CXYCX 2 H,CHX 2 CXHCX 2 Y或直链或支链氢(卤素)氟烷烃的化合物的脱卤化氢,其中每个X独立地为H或F,条件是在CHX2CXYCX2H和CHX2CXHCX2Y中至少 一个X是F,其中Y是F,Cl,Br或I,在碱的存在下。
摘要:
The invention relates to a process for preparing 2,3,3,3-tetrafluoropropene (CF3CF═CH2), performed using the steps of dehydrohalogenating 1,1,1,2,2-pentafluoropropane (CH3CF2CF3, HFC-245ca) 1,1,1,2-tetrafluoro-2-chloropropane, 1,1,1,2,3-pentafluoropropane (CH2FCHFCF3, HFC-245eb) and/or 1,1,1,2-tetrafluoro-3-chloropropane in the presence of a base, and converting a trifluorodichloropropane or a difluorotrichloropropane or a fluorotetrachloropropane to CH3CF2CF3, 1,1,1,2-tetrafluoro-2-chloropropane, CH2FCHFCF3, and/or 1,1,1,2-tetrafluoro-3-chloropropane.
摘要:
The invention relates to a process for preparing 2,3,3,3-tetrafluoropropene (CF3CF═CH2), performed using the steps of dehydrohalogenating 1,1,1,2,2-pentafluoropropane (CH3CF2CF3, HFC-245ca) 1,1,1,2-tetrafluoro-2-chloropropane, 1,1,1,2,3-pentafluoropropane (CH2FCHFCF3, HFC-245eb) and/or 1,1,1,2-tetrafluoro-3-chloropropane in the presence of a base, and converting a trifluorodichloropropane or a difluorotrichloropropane or a fluorotetrachloropropane to CH3CF2CF3, 1,1,1,2-tetrafluoro-2-chloropropane, CH2FCHFCF3, and/or 1,1,1,2-tetrafluoro-3-chloropropane.
摘要:
A process for isomerizing a (hydrohalo)fluoroalkene, the process comprising contacting the (hydrohalo)fluoroalkene with a catalyst a catalyst which is a chromia-containing catalyst supported on AlF3 or fluorinated alumina.
摘要:
A process for isomerising a (hydrohalo)fiuoroalkene, the process comprising contacting the (hydrohalo)fluoroalkene with a catalyst comprising an unsupported Lewis acid, a chromia-containing catalyst containing at least one additional metal, an alumina, a supported liquid catalyst, and mixtures thereof.
摘要:
A process for isomerising a (hydrohalo)fiuoroalkene, the process comprising contacting the (hydrohalo)fluoroalkene with a catalyst comprising an unsupported Lewis acid, a chromia-containing catalyst containing at least one additional metal, an alumina, a supported liquid catalyst, and mixtures thereof.
摘要:
The present invention provides a process for its preparation comprising (a) converting 1,1,1-trifluoro-2,3-dichloropropane (243db) to 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3CCI═CH2) in the presence of a first catalyst in a first reactor, (b) contacting CF3CCI═CH2 with a fluorinating agent in the presence of a second catalyst in a second reactor to produce a compound of formula CF3CFXCH3, wherein X═Cl or F, and (c) dehydrohalogenating the compound of formula CF3CFXCH3 to produce 2,3,3,3-tetrafluoropropene (1234yf).
摘要:
The invention relates to a process for preparing a C3-6 (hydro)fluoroalkene comprising dehydrohalogenating a C3-6 hydro(halo)fluoroalkane in the presence of a zinc/chromia catalyst, wherein the C3-6 (hydro)fluoroalkene produced is isomerised in the presence of the zinc/chromia catalyst.