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    Method of preparing pentafluoroethane, catalysts for fluorination and a preparation method thereof
    31.
    发明授权
    Method of preparing pentafluoroethane, catalysts for fluorination and a preparation method thereof 有权
    五氟乙烷制备方法，氟化催化剂及其制备方法

    公开(公告)号：US06503865B1

    公开(公告)日：2003-01-07

    申请号：US10172970

    申请日：2002-06-18

    申请人： Takashi Kanemura ,  Takashi Shibanuma

    发明人： Takashi Kanemura ,  Takashi Shibanuma

    IPC分类号： B01J2706

    CPC分类号： C07C17/206 ,  B01J23/26 ,  B01J23/864 ,  B01J23/866 ,  B01J35/002 ,  B01J35/023 ,  B01J35/026 ,  B01J35/1014 ,  B01J35/1019 ,  B01J37/0009 ,  B01J37/0036 ,  B01J37/0072 ,  B01J37/031 ,  B01J37/26 ,  C07C17/21 ,  C07C19/08

    摘要： A method of preparing pentafluoroethane wherein chlorine-containing carbon compounds are fluorinated in the presence of chromium catalysts that are in an amorphous state and wherein the main component is chromium compounds with the addition of at least one metal element selected from the group composed of indium, gallium, cobalt, nickel, zinc and aluminum and the average valence of the chromium in said chromium compounds is not less than +3.5 but not more than +5.0. And said chromium catalysts and a preparation method thereof. A method of preparing pentafluoroethane wherein the total yield of chlorofluoroethane by-products can be decreased without significantly deteriorating the generation activity of the pentafluoroethane and compounds which can be recycled in the reaction system. And to provide catalysts for this fluorination and a preparation method thereof.

    摘要翻译： 一种制备五氟乙烷的方法，其中含铬碳化合物在铬催化剂存在下为氟化，其为非晶状态，其中主要成分为铬化合物，加入至少一种选自铟， 镓，钴，镍，锌和铝，并且所述铬化合物中的铬的平均化合价不小于+ 3.5且不大于+ 5.0。 所述铬催化剂及其制备方法。一种制备五氟乙烷的方法，其中可以降低氯氟乙烷副产物的总产率而不显着降低五氟乙烷的生成活性和可在反应体系中再循环的化合物。 并为该氟化提供催化剂及其制备方法。

    Process for producing difluoromethane
    32.
    发明授权
    Process for producing difluoromethane 失效
    二氟甲烷生产工艺

    公开(公告)号：US06407296B1

    公开(公告)日：2002-06-18

    申请号：US08750746

    申请日：1996-12-23

    申请人： Yasufu Yamada ,  Takashi Shibanuma ,  Takehide Tsuda

    发明人： Yasufu Yamada ,  Takashi Shibanuma ,  Takehide Tsuda

    IPC分类号： C07C1708

    CPC分类号： B01J27/12 ,  C07C17/206 ,  C07C19/08

    摘要： A process is disclosed for producing difluoromethane by fluorinating dichloromethane with hydrogen fluoride in a liquid phase in the presence of a catalyst, wherein the reaction is conducted at a temperature within the range from 80 to 150° C. under a pressure within the range from 8 to 80 kg/cm2 using a mixture of antimony pentafluoride and antimony trifluoride, or antimony pentafluoride as the fluorinating catalyst. The process economically and safely produces difluoromethane from dichloromethane and hydrogen fluoride.

    摘要翻译： 公开了一种通过在催化剂存在下在液相中用氟化氢氟化二氯甲烷来生产二氟甲烷的方法，其中反应在80-150℃的温度下进行，压力范围为8 至80kg / cm 2，使用五氟化锑和三氟化锑的混合物，或五氟化锑作为氟化催化剂。 该方法经济安全地从二氯甲烷和氟化氢产生二氟甲烷。

    Process for producing 1,1,1,2,2-pentafluoroethane
    33.
    发明授权
    Process for producing 1,1,1,2,2-pentafluoroethane 有权
    生产1,1,1,2,2-五氟乙烷的方法

    公开(公告)号：US06392106B1

    公开(公告)日：2002-05-21

    申请号：US09509989

    申请日：2000-04-05

    申请人： Satoru Kono ,  Toshikazu Yoshimura ,  Takashi Shibanuma

    发明人： Satoru Kono ,  Toshikazu Yoshimura ,  Takashi Shibanuma

    IPC分类号： C07C1708

    CPC分类号： C07C17/38 ,  C07C17/206 ,  C07C17/383 ,  Y02P20/582 ,  C07C19/08 ,  C07C19/12

    摘要： A process for producing 1,1,1,2,2-pentafluoroethane by fluorinating with hydrogen fluoride at least one of 2,2-dichloro-1,1,1-trifluoroethane and 2-chloro-1,1,1,2-tetrafluoroethane as a starting material, the process being characterized by separating the reaction mixture resulting from the fluorination into a product portion A mainly containing 1,1,1,2,2-pentafluoroethane and a product portion B mainly containing 2,2-dichloro-1,1,1-trifluoroethane, 2-chloro-1,1,1,2-tetrafluoroethane and hydrogen fluoride, removing a fraction mainly containing 2,2-dichloro-1,1,1,2-tetrafluoroethane from the product portion B, and recycling the rest of the product portion B as part of feedstocks for fluorination. According to the process of the invention, the amount of CFC-115 contained in the target HFC-125 can be remarkably reduced through a simplified procedure.

    摘要翻译： 一种通过用氟化氢氟化2,2-二氯-1,1,1-三氟乙烷和2-氯-1,1,1,2-四氟乙烷中的至少一种制备1,1,1,2,2-五氟乙烷的方法， 四氟乙烷为原料，该方法的特征在于将由氟化得到的反应混合物分离成主要含有1,1,1,2,2-五氟乙烷的产物部分A和主要含有2,2-二氯 - 1,1,1-三氟乙烷，2-氯-1,1,1,2-四氟乙烷和氟化氢，从产物部分B中除去主要含有2,2-二氯-1,1,1,2-四氟乙烷的馏分 ，并将产物部分B的其余部分作为用于氟化的原料的一部分进行再循环。根据本发明的方法，目标HFC-125中所含的CFC-115的量可以通过简化的程序显着降低。

    Method for preparing fluorination catalyst used to fluorinate halogenated hydrocarbons
    35.
    发明授权
    Method for preparing fluorination catalyst used to fluorinate halogenated hydrocarbons 失效
    制备用于氟化卤代烃的氟化催化剂的方法

    公开(公告)号：US5849658A

    公开(公告)日：1998-12-15

    申请号：US435166

    申请日：1995-05-05

    申请人： Takashi Shibanuma ,  Yoshio Iwai ,  Satoshi Koyama

    发明人： Takashi Shibanuma ,  Yoshio Iwai ,  Satoshi Koyama

    IPC分类号： B01J23/26 ,  B01J37/26 ,  C07C17/20 ,  C07C17/21 ,  B01J27/132

    CPC分类号： C07C17/21 ,  B01J23/26 ,  B01J37/26 ,  C07C17/206

    摘要： A method for preparing a fluorination catalyst is disclosed, wherein the catalyst contains chromium oxide, has a specific surface area of from 170 m.sup.2 g to 300 m.sup.2 /g, catalyzes the fluorination of a halogenated hydrocarbon with hydrogen fluoride, and has a high activity and long catalyst life. The method includes mixing an aqueous solution of a chromium salt with aqueous ammonia to precipitate chromium hydroxide, drying the precipitated chromium hydroxide, sintering the dried chromium hydroxide, and fluorinating the sintered chromium hydroxide to obtain the chromium oxide catalyst.

    摘要翻译： 公开了一种制备氟化催化剂的方法，其中催化剂含有氧化铬，比表面积为170m 2 / g至300m 2 / g，催化用氟化氢氟化卤代烃，具有较高的活性和长 催化剂寿命。 该方法包括将铬盐水溶液与氨水混合以沉淀氢氧化铬，干燥沉淀的氢氧化铬，烧结干燥的氢氧化铬，氟化烧结的氢氧化铬得到氧化铬催化剂。

    Method for producing pentafluoroethane
    39.
    发明授权
    Method for producing pentafluoroethane 有权
    五氟乙烷生产方法

    公开(公告)号：US08975455B2

    公开(公告)日：2015-03-10

    申请号：US12747696

    申请日：2008-11-12

    申请人： Masatoshi Nose ,  Kazuhiro Takahashi ,  Takashi Shibanuma

    发明人： Masatoshi Nose ,  Kazuhiro Takahashi ,  Takashi Shibanuma

    IPC分类号： C07C19/08 ,  C07C17/21

    CPC分类号： C07C17/21 ,  C07C19/08

    摘要： The present invention aims in a method wherein tetrachloroethylene (PCE) is reacted with HF in a gas phase in the presence of a catalyst to obtain pentafluoroethane (HFC-125), to reduce production of undesirable by-products and maintain a catalytic activity at a high level over a long period of time while achieving a high conversion ratio of PCE and suppressing deterioration of the catalyst.In a method for producing pentafluoroethane wherein tetrachloroethylene is reacted with HF in a gas phase in the presence of a catalyst to obtain pentafluoroethane, characterized in that chromium oxyfluoride is disposed in a reactor as the catalyst, and oxygen is fed into the reactor together with tetrachloroethylene and HF, at a amount of 0.4-1.8% by mole with respect to tetrachloroethylene.

    摘要翻译： 本发明的目的在于一种方法，其中使四氯乙烯（PCE）与HF在气相中在催化剂存在下与HF反应以获得五氟乙烷（HFC-125），以减少不合需要的副产物的产生并保持催化活性 高水平，同时实现PCE的高转化率并抑制催化剂的劣化。 在五氯乙烷的制造方法中，在催化剂存在下，在气相中使四氯乙烯与HF反应得到五氟乙烷，其特征在于，将氟氧氟化铬作为催化剂配置在反应器中，并将氧与四氯乙烯 和HF，相对于四氯乙烯为0.4-1.8摩尔％。