Methods of purifying hydrogen fluoride
    92.
    发明授权
    Methods of purifying hydrogen fluoride 有权
    氟化氢的纯化方法

    公开(公告)号:US07371363B2

    公开(公告)日:2008-05-13

    申请号:US10620018

    申请日:2003-07-15

    IPC分类号: C01B7/19 C07C17/38

    CPC分类号: C01B7/195

    摘要: Provided are methods of producing anhydrous hydrogen fluoride comprising: providing a mixture comprising hydrogen fluoride and at least one halogenated hydrocarbon; and extracting hydrogen fluoride from the mixture by contacting the mixture with a solution of less than about 93 wt. % sulfuric acid solution in water.

    摘要翻译: 提供了生产无水氟化氢的方法,其包括:提供包含氟化氢和至少一种卤代烃的混合物; 并从混合物中提取氟化氢,使混合物与小于约93wt。 %硫酸溶液在水中。

    Process to manufacture 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb)
    95.
    发明授权
    Process to manufacture 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) 有权
    制备2-氯-1,1,1,2-四氟丙烷(HCFC-244bb)的方法

    公开(公告)号:US08664455B2

    公开(公告)日:2014-03-04

    申请号:US12512955

    申请日:2009-07-30

    IPC分类号: C07C17/25 C07C19/08 C07C21/18

    摘要: The invention provides an improved process to manufacture 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) by reacting 2-chloro-3,3,3,-trifluoropropene (HCFO-1233xf) with hydrogen fluoride, in a liquid phase reaction in the presence of hydrogen chloride and a liquid phase fluorination catalyst. The hydrogen chloride is added into the reaction from an external source at a pressure of about 100 psig or more. The HCFC-244bb is an intermediate in the production of 2,3,3,3-tetrafluoropropene-1 (HFO-1234yf).

    摘要翻译: 本发明提供了通过2-氯-3,3,3-三氟丙烯(HCFO-1233xf)与氟化氢反应制备2-氯-1,1,1,2-四氟丙烷(HCFC-244bb)的改进方法, 在氯化氢和液相氟化催化剂存在下进行液相反应。 氯化氢在约100psig或更高的压力下从外部来源加入到反应中。 HCFC-244bb是生产2,3,3,3-四氟丙烯-1(HFO-1234yf)的中间体。

    METHOD FOR PRODUCING TETRAFLUOROPROPENES
    96.
    发明申请
    METHOD FOR PRODUCING TETRAFLUOROPROPENES 有权
    生产四氢呋喃的方法

    公开(公告)号:US20110270000A1

    公开(公告)日:2011-11-03

    申请号:US13073023

    申请日:2011-03-28

    IPC分类号: C07C17/23

    摘要: The current invention relates to a process for making a tetrafluoropropene using a tetrafluorochloropropane and/or a pentafluoropropane as starting or intermediate reagents. More specifically, though not exclusively, the present invention relates to a novel method for preparing a tetrafluoropropene by dehydrohalogenating a starting or intermediate tetrafluorochloropropane and/or pentafluoropropane material in the presence of a caustic solution at a temperature range greater than 40° C. and less than or equal to 80° C.

    摘要翻译: 本发明涉及使用四氟氯丙烷和/或五氟丙烷作为起始剂或中间体试剂制备四氟丙烯的方法。 更具体地说,本发明涉及一种通过在苛性碱溶液存在下,在大于40℃和更低的温度范围内将起始或中间四氟氯丙烷和/或五氟丙烷物质脱卤化氢来制备四氟丙烯的新方法 超过或等于80℃

    Process for the manufacture of 1,3,3,3-tetrafluoropropene
    97.
    发明授权
    Process for the manufacture of 1,3,3,3-tetrafluoropropene 有权
    制备1,3,3,3-四氟丙烯的方法

    公开(公告)号:US07829748B1

    公开(公告)日:2010-11-09

    申请号:US12563458

    申请日:2009-09-21

    IPC分类号: C07C17/00

    摘要: The invention provides an economic process for the manufacture of 1,3,3,3-tetrafluoropropene (HFO-1234ze) by a two stage process. A vapor phase hydrofluorination of 1-chloro-3,3,3-trifluoropropene (HCFC-1233zd) into 1-chloro-1,3,3,3-tetrafluoropropane (HCFC-244fa) and/or 1,1,1,3,3-pentafluoropropane (HFC-245fa) is conducted, followed by the thermal dehydrochlorination of HCFC-244fa and dehydro fluorination of HFC-245fa into HFO-1234ze in the presence of a catalyst which comprises one or more of alkali metal halides, alkaline earth metal halides, halogenated metal oxides, zero oxidation state metals, zinc halides, palladium halides, and activated carbon.

    摘要翻译: 本发明提供了通过两阶段方法制备1,3,3,3-四氟丙烯(HFO-1234ze)的经济方法。 将1-氯-3,3,3-三氟丙烯(HCFC-1233zd)汽相氢氟化为1-氯-1,3,3,3-四氟丙烷(HCFC-244fa)和/或1,1,1,3 进行3-五氟丙烷(HFC-245fa),随后在含有一种或多种碱金属卤化物,碱土金属的催化剂存在下,将HCFC-244fa的热脱氯化氢和HFC-245fa的脱氟化氢分解成HFO-1234 卤化金属氧化物,零氧化态金属,卤化锌,钯卤化物和活性炭。