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    Process for the preparation of 1,1,1,2,2-pentafluoroethane
    1.
    发明授权
    Process for the preparation of 1,1,1,2,2-pentafluoroethane 失效
    制备1,1,1,2,2-五氟乙烷的方法

    公开(公告)号：US07074973B2

    公开(公告)日：2006-07-11

    申请号：US10523227

    申请日：2003-08-21

    申请人： Mario J. Nappa ,  Velliyur Nott Mallikarjuna Rao ,  H. David Rosenfeld ,  Shekhar Subramoney ,  Munirpallam A. Subramanian ,  Allen C. Sievert

    发明人： Mario J. Nappa ,  Velliyur Nott Mallikarjuna Rao ,  H. David Rosenfeld ,  Shekhar Subramoney ,  Munirpallam A. Subramanian ,  Allen C. Sievert

    IPC分类号： C07C17/00

    CPC分类号： C07C17/206 ,  B01J23/864 ,  B01J35/002 ,  B01J37/0236 ,  B01J37/03 ,  B01J37/26 ,  C07C17/21 ,  Y02P20/582 ,  C07C19/08

    摘要： A process for the preparation of pentafluoroethane is disclosed which involves contacting a mixture comprising hydrogen fluoride and at least one starting material selected from haloethanes of the formula CX3CHX2 and haloethanes of the formula CX2═CX2, where each X is independently selected from the group consisting of F and Cl (provided that no more than four of X are F), with a fluorination catalyst in a reaction zone to produce a product mixture comprising HF, HCl, pentafluoroethane, underfluorinated halogenated hydrocarbon intermediates and less than 0.2 mole percent chloropentafluoroethane based on the total moles of halogenated hydrocarbons in the product mixture. The process is characterized by the fluorination catalyst comprising (i) a crystalline cobalt-substituted alpha-chromium oxide where from about 0.05 atom % to about 6 atom % of the chromium atoms in the alpha-chromium oxide lattice are replaced by trivalent cobalt (Co+3) and/or (ii) a fluorinated crystalline oxide of (i).

    摘要翻译： 公开了一种制备五氟乙烷的方法，其涉及将包含氟化氢和至少一种选自式CX 3 CHX 2 2的卤代乙烷的起始物质和 式CX 2 -CX 2 X，其中每个X独立地选自F和Cl（条件是不超过四个X为F），与 反应区中的氟化催化剂，以产生基于产物混合物中卤代烃总摩尔数的HF，HCl，五氟乙烷，过氟化卤代烃中间体和小于0.2摩尔％氯五氟乙烷的产物混合物。 该方法的特征在于氟化催化剂，其包含（i）结晶钴取代的α-氧化铬，其中α-氧化铬晶格中约0.05原子％至约6原子％的铬原子被三价钴（Co （ⅰ））和/或（ⅱ）氟化结晶氧化物。

    Processes for the preparation of 2-chloro-1,1,1,2,3,3,3-heptafluoropropane, hexafluoropropene and 1,1,1,2,3,3,3-heptafluoropropane
    2.
    发明授权
    Processes for the preparation of 2-chloro-1,1,1,2,3,3,3-heptafluoropropane, hexafluoropropene and 1,1,1,2,3,3,3-heptafluoropropane 失效
    制备2-氯-1,1,1,2,3,3,3-七氟丙烷，六氟丙烯和1,1,1,2,3,3,3-七氟丙烷的方法

    公开(公告)号：US07129383B2

    公开(公告)日：2006-10-31

    申请号：US10523223

    申请日：2003-08-21

    申请人： Mario J. Nappa ,  Velliyur Nott Mallikarjuna Rao ,  H. David Rosenfeld ,  Sekhar Subramoney ,  Munirpallam A. Subramanian ,  Allen C. Sievert

    发明人： Mario J. Nappa ,  Velliyur Nott Mallikarjuna Rao ,  H. David Rosenfeld ,  Sekhar Subramoney ,  Munirpallam A. Subramanian ,  Allen C. Sievert

    IPC分类号： C07C17/00 ,  C07C17/266 ,  C07C17/10

    CPC分类号： C07C19/08 ,  B01J23/26 ,  B01J23/866 ,  B01J35/002 ,  B01J37/0236 ,  B01J37/03 ,  B01J37/26 ,  C07C17/206 ,  C07C17/21 ,  C07C17/23 ,  C07C17/25 ,  C07C19/10 ,  C07C21/18

    摘要： A process for the preparation of 2-chloro-1,1,1,3,3,3-heptafluoropropane is disclosed which involves (a) contacting a mixture comprising hydrogen fluoride, chlorine, and at least one starting material selected from the group consisting of halopropenes of the formula CX3CCI═CX2 and halopropanes of the formula the CX3CCIYCX3, wherein each X is independently F or Cl, and Y is H, Cl or F (provided that the number of X and Y which are F totals no more than six) with a chlorofluorination catalyst in a reaction zone to produce a product mixture comprising CF3CCIFCF3, HCI, HF. and underfluorinated halogenated hydrocarbon intermediates. The process is characterized by said chlorofluorination 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 nickel, trivalent cobalt or both nickel and trivalent cobalt, provided that no more than 2 atom % of the chromium atoms in the alpha-chromium oxide lattice are replaced by nickel and that the total amount of chromium atoms in the alpha-chromium oxide lattice that are replaced by nickel and trivalent cobalt is no more than 6 atom %, and (ii) a fluorinated crystalline oxide of (i). Also disclosed is a process for the manufacture of a mixture of HFC-227ea and hexafluoropropene by reacting a starting mixture comprising CFC-217ba and hydrogen in the vapor phase at an elevated temperature, optionally in the presence of a hydrogenation catalyst. This process involves preparing the CFC-217ba by the process described above.

    摘要翻译： 公开了一种制备2-氯-1,1,1,3,3,3-七氟丙烷的方法，其涉及（a）使包含氟化氢，氯和至少一种起始原料的混合物接触，所述起始材料选自 的式CX3CCI-CX2的卤代丙烯和式CX3CCIYCX3的卤代丙烷，其中每个X独立地为F或Cl，Y为H，Cl或F（条件是总计X不超过6的X和Y的数目 ）与反应区中的氯氟化催化剂反应以产生包含CF 3 CClF 3，HCl，HF的产物混合物。 和不完全氟化的卤代烃中间体。 该方法的特征在于所述氯氟化催化剂包含至少一种含铬组分，其选自（i）α-氧化铬晶格中至少0.05原子％的铬原子被镍取代的结晶α-氧化铬，三价 钴或镍和三价钴，条件是α-铬氧化物晶格中不超过2原子％的铬原子被镍代替，并且α-氧化铬晶格中的铬原子的总量被 镍和三价钴不超过6原子％，和（ii）（i）的氟化结晶氧化物。 还公开了通过在升高的温度下，任选地在氢化催化剂存在下，使包含CFC-217ba和氢的起始混合物在气相中反应制备HFC-227ea和六氟丙烯的混合物的方法。 该方法包括通过上述方法制备CFC-217ba。

    Cobalt-substituted chromium oxide compositions, their preparation, and their use as catalysts and catalyst precursors
    3.
    发明授权
    Cobalt-substituted chromium oxide compositions, their preparation, and their use as catalysts and catalyst precursors 有权
    钴取代的氧化铬组合物，它们的制备及其作为催化剂和催化剂前体的用途

    公开(公告)号：US07217678B2

    公开(公告)日：2007-05-15

    申请号：US10523228

    申请日：2003-08-21

    申请人： Velliyur Nott Mallikarjuna Rao ,  H. David Rosenfeld ,  Allen C. Sievert ,  Shekhar Subramoney ,  Munirpallam Appadorai Subramanian

    发明人： Velliyur Nott Mallikarjuna Rao ,  H. David Rosenfeld ,  Allen C. Sievert ,  Shekhar Subramoney ,  Munirpallam Appadorai Subramanian

    IPC分类号： B01J27/06 ,  B01J23/00

    CPC分类号： C07C17/21 ,  B01J23/864 ,  B01J35/002 ,  B01J35/1014 ,  B01J37/0236 ,  B01J37/03 ,  C07C17/00 ,  C07C17/08 ,  C07C17/10 ,  C07C17/20 ,  C07C17/206 ,  C07C17/23 ,  C07C17/25 ,  C07C17/358 ,  C07C17/37 ,  C07C21/18 ,  C07C21/04 ,  C07C19/08 ,  C07C21/06 ,  C07C19/12 ,  C07C19/10

    摘要： A crystalline alpha-chromium oxide where from about 0.05 atom % to about 6 atom % of the chromium atoms in the alpha-chromium oxide lattice are replaced by trivalent cobalt (Co+3) atoms is disclosed. Also disclosed is a chromium-containing catalyst composition comprising as a chromium-containing component the crystalline cobalt-substituted alpha-chromium oxide; and a method for preparing a composition comprising the crystalline cobalt-substituted alpha-chromium oxide. The method involves (a) co-precipitating a solid by adding ammonium hydroxide to an aqueous solution of a soluble cobalt salt and a soluble trivalent chromium salt that contains at least three moles of nitrate per mole of chromium in the solution and has a cobalt concentration of from about 0.05 mole % to about 6 mole % of the total concentration of cobalt and chromium in the solution; and after at least three moles E of ammonium per mole of chromium in the solution has been added to the solution, (b) collecting the co-precipitated solid formed in (a); (c) drying the collected solid; and (d) calcining the dried solid. Also disclosed is a chromium-containing catalyst composition comprising a chromium-containing component prepared by treating the crystalline cobalt-substituted alpha-chromium oxide with a fluorinating agent; and a process for changing the fluorine distribution (i.e., content and/or arrangement) in a hydrocarbon or halogenated hydrocarbon in the presence of a catalyst. The process involves using as the catalyst a composition comprising the crystalline cobalt-substituted alpha-chromium oxide and/or the treated cobalt-substituted alpha-chromium oxide.

    摘要翻译： 公开了一种结晶α-Cr氧化物，其中α-Cr氧化物晶格中约0.05原子％至约6原子％的铬原子被三价钴（Co + O 3+）原子所取代。 还公开了含铬催化剂组合物，其包含结晶钴取代的α-氧化铬作为含铬组分; 以及制备包含结晶钴取代的α-氧化铬的组合物的方法。 该方法包括（a）通过向可溶性钴盐和可溶性三价铬盐的水溶液中加入氢氧化铵共沉淀固体，该溶液在溶液中每摩尔铬含有至少三摩尔硝酸盐，并且具有钴浓度 为溶液中钴和铬的总浓度的约0.05摩尔％至约6摩尔％ 并且在溶液中每摩尔铬至少三摩尔E之后的铵加入到溶液中，（b）收集（a）中形成的共沉淀固体; （c）干燥收集的固体; 和（d）煅烧干燥的固体。 还公开了一种含铬催化剂组合物，其包含通过用氟化剂处理结晶钴取代的α-氧化铬制备的含铬组分; 以及在催化剂存在下改变烃或卤代烃中的氟分布（即含量和/或排列）的方法。 该方法包括使用包含结晶钴取代的α-氧化铬和/或经处理的钴取代的α-氧化铬的组合物作为催化剂。

    Fluoroketone compounds
    5.
    发明授权
    Fluoroketone compounds 失效
    氟酮化合物

    公开(公告)号：US07122704B2

    公开(公告)日：2006-10-17

    申请号：US10871857

    申请日：2004-06-18

    申请人： Mario J. Nappa ,  Velliyur Nott Mallikarjuna Rao ,  Allen C. Sievert

    发明人： Mario J. Nappa ,  Velliyur Nott Mallikarjuna Rao ,  Allen C. Sievert

    IPC分类号： C07C49/00 ,  A62C1/00 ,  G03C1/00

    CPC分类号： C07C49/175 ,  C07C45/58 ,  C07C49/16

    摘要： The present invention relates to new fluoroketone compounds from the groups monobromoperfluoroketones, monohydromonobromoperfluoroketones, (perfluoroalkoxy)monobromoperfluoroketones, (fluoroalkoxy)monobromoperfluoroketones, and monochloromonobromoperfluoroketones. These fluoroketone compounds have utility in preventing, controlling and extinguishing fire. These fluoroketone compounds have further utility as additives to reduce or eliminate the flammability of normally flammable working fluids such as refrigerants, foam blowing agents, solvents, aerosol propellants, and sterilants.

    摘要翻译： 本发明涉及来自单溴全氟酮，一氢溴三氟全氟酮，（全氟烷氧基）一溴全氟酮，（氟烷氧基）一溴全氟酮和一氯三溴全氟酮的新的含氟酮化合物。 这些含氟酮化合物可用于预防，控制和扑灭火灾。 这些含氟酮化合物具有进一步的作为添加剂的用途，以减少或消除通常可燃的工作流体如致冷剂，泡沫发泡剂，溶剂，气溶胶推进剂和灭菌剂的可燃性。

    Methods using fluoroketones for: extinguishing fire; preventing fire, and reducing or eliminating the flammability of a flammable working fluid
    7.
    发明授权
    Methods using fluoroketones for: extinguishing fire; preventing fire, and reducing or eliminating the flammability of a flammable working fluid 失效
    使用氟酮的方法：灭火; 防止火灾，并减少或消除易燃工作流体的可燃性

    公开(公告)号：US07343981B2

    公开(公告)日：2008-03-18

    申请号：US10871715

    申请日：2004-06-18

    申请人： Mario J. Nappa ,  Velliyur Nott Mallikarjuna Rao ,  Allen C. Sievert

    发明人： Mario J. Nappa ,  Velliyur Nott Mallikarjuna Rao ,  Allen C. Sievert

    IPC分类号： A62C2/00

    CPC分类号： C07C49/175 ,  C07C45/58 ,  C07C49/16

    摘要： The present invention relates to methods of using at least one fluoroketone selected from monobromoperfluoroketones, monohydromonobromoperfluoroketones, (perfluoroalkoxy)monobromoperfluoroketones, (fluoroalkoxy)monobromoperfluoroketones, and monochloromonobromoperfluoroketones for i) extinguishing fire by applying to the fire such a fluoroketone, ii) preventing fire in an air-containing enclosed area containing combustible materials by introducing into the area such a fluoroketone and maintaining the fluoroketone in an amount sufficient to suppress combustion of combustible materials in the enclosed area, and iii) reducing or eliminating the flammability of a flammable working fluid, by mixing between about 0.1 to about 99 percent by weight of such a fluoroketone with the flammable working fluid.

    摘要翻译： 本发明涉及使用选自一溴全氟酮，一氢溴三氟全氟酮，（全氟烷氧基）一溴全氟酮，（氟代烷氧基）一溴全氟酮，和一氯三氟全氟酮的至少一种氟代酮的方法，用于i）通过向火中施加氟代酮消除火焰，ii） 含有可燃性物质的含空气的封闭区域通过将这样的氟代酮引入到这样的区域中并将氟酮保持在足以抑制在封闭区域内的可燃材料的燃烧的量，以及iii）减少或消除易燃工作流体的可燃性， 将约0.1至约99重量％的这种氟酮与易燃工作流体混合。

    Process for the preparation of 1,1,3,3,3-pentafluoropropene and 1,2,3,3,3-pentafluoropropene
    8.
    发明授权
    Process for the preparation of 1,1,3,3,3-pentafluoropropene and 1,2,3,3,3-pentafluoropropene 失效
    制备1,1,3,3,3-五氟丙烯和1,2,3,3,3-五氟丙烯的方法

    公开(公告)号：US08017817B2

    公开(公告)日：2011-09-13

    申请号：US11988257

    申请日：2006-08-04

    申请人： Velliyur Nott Mallikarjuna Rao ,  H. David Rosenfeld ,  Allen Capron Sievert ,  Shekhar Subramoney

    发明人： Velliyur Nott Mallikarjuna Rao ,  H. David Rosenfeld ,  Allen Capron Sievert ,  Shekhar Subramoney

    IPC分类号： C07C7/00

    CPC分类号： B01J37/03 ,  B01J23/868 ,  B01J37/0009 ,  B01J37/26 ,  C07C17/21 ,  C07C17/23 ,  C07C17/25 ,  C07C21/18 ,  C07C19/10 ,  C07C19/08

    摘要： A process for the manufacture of CF3CH═CF2 and CF3CF═CHF is disclosed. The process involves (a) reacting HF and chlorine and at least one halopropene of the formula CX3CCI═CCIX (where each X is independently F or Cl) to produce a product including both CF3CCI2CF3 and CF3CCIFCCIF2; (b) reacting CF3CCI2CF3 and CF3CCIFCCIF2 produced in (a) with hydrogen to produce a product including both CF3CH2CF3 and CF3CHFCHF2; (c) dehydrofluorinating CF3CH2CF3 and CF3CHFCHF2 produced in (b) to produce a product including both CF3CH═CF2 and CF3CF═CHF; and (d) recovering CF3CH═CF2 and CF3CF═CHF from the product produced in (c). In (a), both CF3CCI2CF3 and CF3CCIFCCIF2 are produced in the presence of a chlorofluorination catalyst consisting of (i) compositions comprising a crystalline alpha-chromium oxide where at least 0.05 atom % of the chromium atoms in the alpha-chromium oxide lattice are replaced by copper, and (H) compositions of (i) which have been treated with a fluorinating agent.

    摘要翻译： 公开了制备CF 3 CH 2 CF 2和CF 3 CF = CHF的方法。 该方法包括（a）使HF和氯与至少一种式CX3CCI = CCIX的卤代丙烯（其中每个X独立地为F或Cl）反应，以产生包含CF 3 CCl 2 CF 3和CF 3 CClFCCIF 2的产物; （b）使（a）中制备的CF 3 CCl 2 CF 3和CF 3 CClFCCIF 2与氢反应以产生包含CF 3 CH 2 CF 3和CF 3 CHFCHF 2的产物; （c）在（b）中制备的CF 3 CH 2 CF 3和CF 3 CHFCHF 2脱氟化氟化产生包括CF 3 CH 2 CF 2和CF 3 CF = CHF的产物; 和（d）从（c）中制备的产物中回收CF 3CH≡CF2和CF 3 CF = CHF。 在（a）中，CF 3 CCl 2 CF 3和CF 3 CClFCCIF 2均在氯氟化催化剂存在下制备，所述氯氟化催化剂由（i）包含α-氧化铬晶格中至少0.05原子％的铬原子的结晶α-氧化铬的组合物组成 通过铜和（H）组合物（i）已用氟化剂处理。

    Process for the preparation of 1,1,1,3,3-penta-fluoropropane and/or 1,1,1,3,3,3-hexafluoropropane
    9.
    发明授权
    Process for the preparation of 1,1,1,3,3-penta-fluoropropane and/or 1,1,1,3,3,3-hexafluoropropane 失效
    制备1,1,1,3,3-五氟丙烷和/或1,1,1,3,3,3-六氟丙烷的方法

    公开(公告)号：US07659436B2

    公开(公告)日：2010-02-09

    申请号：US11988436

    申请日：2006-08-04

    申请人： Velliyur Nott Mallikarjuna Rao ,  H. David Rosenfeld ,  Allen Capron Sievert ,  Shekhar Subramoney

    发明人： Velliyur Nott Mallikarjuna Rao ,  H. David Rosenfeld ,  Allen Capron Sievert ,  Shekhar Subramoney

    IPC分类号： C07C17/00 ,  C07C17/10

    CPC分类号： B01J23/868 ,  B01J37/0009 ,  B01J37/03 ,  C07C17/206 ,  C07C17/21 ,  C07C17/23 ,  C07C17/25 ,  C07C19/08 ,  C07C21/18 ,  C07C19/10

    摘要： A process for the manufacture of CF3CH2CHF2 and/or CF3CH2CF3 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 Cl) 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; and (c) recovering CF3CH2CHF2 and/or CF3CH2CF3 from the product produced in (b). 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.

    摘要翻译： 公开了制备CF 3 CH 2 CHF 2和/或CF 3 CH 2 CF 3的方法。 该方法包括（a）使HF和式CX3CCI-CCIX（其中每个X独立地为F或Cl）至少一种卤代丙烯反应以产生包含CF 3 CCl-CF 2和CF 3 CHCICF 3的产物; （b）使（a）中制备的CF 3 CCl-CF 2和/或CF 3 CHCICF 3与氢反应以产生包含CF 3 CH 2 CHF 2和/或CF 3 CH 2 CF 3的产物; 和（c）从（b）中制备的产物中回收CF 3 CH 2 CHF 2和/或CF 3 CH 2 CF 3。 在（a）中，CF 3 CCl-CF 2和CF 3 CHCICF 3在含有至少一种含铬组分的氟​​化催化剂的存在下制备，所述含铬组分选自（i）结晶α-氧化铬，其中至少0.05原子％ 所述α-氧化铬晶格被二价铜取代，和（ii）已经用氟化剂处理的（i）的含铬组合物。

    Process or the preparation of 1,1,1,3,3,3-hexafluoro-propane and at least one of 1,1,1,2,3,3-hexafluoropropane, hexafluoropropane and 1,1,1,2,3,3,3-heptafluoropropane
    10.
    发明授权
    Process or the preparation of 1,1,1,3,3,3-hexafluoro-propane and at least one of 1,1,1,2,3,3-hexafluoropropane, hexafluoropropane and 1,1,1,2,3,3,3-heptafluoropropane 失效
    1,1,1,3,3,3-六氟丙烷和1,1,1,2,3,3-六氟丙烷，六氟丙烷和1,1,1,2,3中的至少一种的方法或制备 ，3,3-七氟丙烷

    公开(公告)号：US08053611B2

    公开(公告)日：2011-11-08

    申请号：US11988258

    申请日：2006-08-04

    申请人： Velliyur Nott Mallikarjuna Rao ,  H. David Rosenfeld ,  Allen Capron Sievert ,  Shekhar Subramoney

    发明人： Velliyur Nott Mallikarjuna Rao ,  H. David Rosenfeld ,  Allen Capron Sievert ,  Shekhar Subramoney

    IPC分类号： C07C17/00

    CPC分类号： B01J37/26 ,  B01J23/868 ,  C07C17/21 ,  C07C17/23 ,  C07C19/08 ,  C07C21/18 ,  C07C19/10

    摘要： A process is disclosed for the manufacture of 1,1,1,3,3,3-hexafluoropropane and 1,1,1,2,3,3-hexafluoropropane, hexafluoropropene and/or 1,1,1,2,3,3,3-heptafluoropropane. The process involves (a) reacting HF, Cl2, and at least one halopropene of the formula CX3CCl═CClX (where each X is independently F or Cl) to produce a product comprising CF3CCl2CF3 and CF3CClFCClF2; (b) reacting CF3CCl2CF3 and CF3CClFCClF2 produced in (a) with hydrogen, optionally in the presence of HF, to produce a product comprising CF3CH2CF3 and at least one of CHF2CHFCF3, CF3CF═CF2 and CF3CFHCF3; and (c) recovering from the product produced in (b), CF3CH2CF3 and at least one of CHF2CHFCF3, CF3CF═CF2 and CF3CFHCF3. In (a), the CF3CCl2CF3 and CF3CClFCClF2 are produced in the presence of a chlorofluorination catalyst including (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/or (ii) a chromium-containing composition of (i) which has been treated with a fluorinating agent.

    摘要翻译： 公开了用于制造1,1,1,3,3,3-六氟丙烷和1,1,1,2,3,3-六氟丙烷，六氟丙烯和/或1,1,1,2,3， 3,3-七氟丙烷。 该方法包括（a）使HF，Cl 2和至少一种式CX3CCl = CClX（其中每个X独立地为F或Cl）的卤代丙烯反应以产生包含CF 3 CCl 2 CF 3和CF 3 CClFCClF 2的产物; （b）使（a）中制备的CF 3 CCl 2 CF 3和CF 3 CClFCClF与任选在HF存在下的氢反应，生成包含CF 3 CH 2 CF 3和CHF 2 CHFCF 3，CF 3CF≡CF2和CF 3 CFHCF 3中的至少一种的产物; 和（c）从（b）中产生的产物，CF 3 CH 2 CF 3和CHF 2 CHFCF 3，CF 3CF≡CF2和CF 3 CFHCF 3中的至少一种中回收。 在（a）中，CF 3 CCl 2 CF 3和CF 3 CClFCClF 2在氯氟化催化剂的存在下制备，包括（i）结晶α-氧化铬，其中至少0.05原子％的α-氧化铬晶格中的铬原子被二价铜 ，和/或（ⅱ）已经用氟化剂处理的（ⅰ）的含铬组合物。