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136 条记录 (耗时 0.033 秒)

    Tetrafluoropropene Production Processes
    23.
    发明申请
    Tetrafluoropropene Production Processes 有权
    四氟丙烯生产工艺

    公开(公告)号：US20090127496A1

    公开(公告)日：2009-05-21

    申请号：US12301070

    申请日：2007-06-22

    申请人： Velliyur Nott Mallikarjuna Rao ,  Mario Joseph Nappa ,  Allen Capron Sievert

    发明人： Velliyur Nott Mallikarjuna Rao ,  Mario Joseph Nappa ,  Allen Capron Sievert

    IPC分类号： C09K5/00 ,  C07C17/25

    CPC分类号： B01J37/26 ,  B01J21/04 ,  B01J27/125 ,  C07C17/25 ,  C07C17/386 ,  C07C21/18 ,  C07C19/08

    摘要： A process is disclosed for the manufacture of CF3CF═CH2 and CF3CH═CHF. The process involves dehydrofluorinating CF3CHFCH2F in the presence of a dehydrofluorination catalyst to produce a product mixture comprising CF3CF═CH2 and CF3CH═CHF, and recovering said CF3CF═CH2 and CF3CH═CHF from the product mixture.The present invention also provides a composition comprising (a) the Z-isomer of CF3CH═CHF and (b) HF; wherein the HF is present in an effective amount to form an azeotropic combination with the Z—CF3CH═CHF.

    摘要翻译： 公开了用于制造CF 3 CF-CH 2和CF 3 CH-CHF的方法。 该方法包括在脱氟化氢催化剂的存在下对CF 3 CHFCH 2 F进行脱氟化氢，以产生包含CF 3 CF-CH 2和CF 3 CH-CHF的产物混合物，并从产物混合物回收所述CF 3 CF-CH 2和CF 3 CH-CHF。 本发明还提供一种组合物，其包含（a）CF 3 CH-CHF的Z-异构体和（b）HF; 其中HF以有效量存在以与Z-CF 3 CH-CHF形成共沸组合。

    Chromium oxide compositions containing zinc, their preparation and their use as catalysts and catalyst precursors
    24.
    发明授权
    Chromium oxide compositions containing zinc, their preparation and their use as catalysts and catalyst precursors 有权
    含有锌的氧化铬组合物，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：US07435700B2

    公开(公告)日：2008-10-14

    申请号：US10572628

    申请日：2004-10-13

    申请人： Tammy Georgette Amos ,  Velliyur Nott Mallikarjuna Rao ,  Allen Capron Sievert ,  Shekhar Subramoney

    发明人： Tammy Georgette Amos ,  Velliyur Nott Mallikarjuna Rao ,  Allen Capron Sievert ,  Shekhar Subramoney

    IPC分类号： B01J21/00 ,  C07C17/00

    CPC分类号： B01J23/86 ,  B01J23/002 ,  B01J23/26 ,  B01J35/0006 ,  B01J35/002 ,  B01J37/03 ,  B01J2523/00 ,  C07C17/25 ,  C07C17/37 ,  C07C21/18 ,  B01J2523/27 ,  B01J2523/67

    摘要： A chromium-containing catalyst is disclosed which includes both ZnCr2O4 and crystalline α-chromium oxide. The ZnCr2O4 contains between about 10 atom percent and 67 atom percent of the chromium in the composition and at least about 70 atom percent of the zinc in the composition, and at least about 90 atom percent of the chromium present as chromium oxide in the composition is present as ZnCr2O4 or crystalline α-chromium oxide. Also disclosed are a method for preparing this composition comprising ZnCr2O4 and crystalline α-chromium oxide; and a chromium-containing catalyst composition prepared by treatment of the composition comprising ZnCr2O4 and crystalline α-chromium oxide with a fluorinating agent. Also disclosed is a process for changing the fluorine distribution in a halogenated hydrocarbon, or incorporating fluorine in a saturated or unsaturated hydrocarbon, in the presence of at least one composition selected from the group consisting of (i) the ZnCr2O4 and crystalline α-chromium oxide compositions and (ii) the ZnCr2O4 and crystalline α-chromium oxide compositions which have been treated with a fluorinating agent.

    摘要翻译： 公开了一种含铬催化剂，其包括ZnCr 2 O 4 O 4和结晶α-氧化铬。 ZnCr 2 O 4 4含有组合物中铬的约10原子％至67原子％，组合物中的锌的至少约70原子％，以及 作为组合物中作为氧化铬存在的至少约90原子％的铬以ZnCr 2 O 4 O 4或结晶α-氧化铬存在。 还公开了一种制备该组合物的方法，该组合物包含ZnCr 2 O 4 O 4和结晶α-氧化铬; 以及通过用氟化剂处理包含ZnCr 2 O 4 O 4和结晶α-氧化铬的组合物制备的含铬催化剂组合物。 还公开了一种改变卤代烃中的氟分布或在饱和或不饱和烃中引入氟的方法，所述方法是在至少一种选自（i）ZnCr 2 SO 2 O 3和结晶α-氧化铬组合物和（ii）ZnCr 2 O 4 O 4和结晶α-氧化铬组合物，它们具有 用氟化剂处理。

    Process for purifying hydrofluoropropanes
    26.
    发明授权
    Process for purifying hydrofluoropropanes 失效
    氢氟丙烷的纯化方法

    公开(公告)号：US07161049B2

    公开(公告)日：2007-01-09

    申请号：US10734946

    申请日：2003-12-11

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

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

    IPC分类号： C07C17/38

    CPC分类号： C07C17/354 ,  C07C17/04 ,  C07C17/206 ,  C07C17/23 ,  C07C17/395 ,  C07C19/08

    摘要： A process is disclosed for purifying a hydrofluoropropane of undesirable C2–C4 olefinic and C1–C4 saturated chlorinated impurities, comprising the steps of: contacting a first mixture of hydrofluoropropane, olefinic impurity and saturated chlorinated impurity with hydrogen and hydrogen fluoride concurrently in the presence of a bifunctional catalyst, for example an alloy of gold and palladium supported on carbon, capable of catalyzing hydrogenation and fluorination. During the contacting step, olefinic impurity is converted to saturated hydrogenated derivative and/or saturated hydrofluorinated derivative, and saturated chlorinated impurity is converted to a saturated hydrodechlorinated derivative and/or saturated fluorinated derivative. The hydrofluoropropane thus formed is substantially free of both the olefinic and saturated chlorinated impurities and may be used as obtained or subject to further purification steps such as distillation to remove the process derivatives (e.g., hydrogenation, hydrodechlorination and hydrofluorination derivatives) from the hydrofluoropropane.

    摘要翻译： 公开了一种纯化不期望的C 2 -C 4 -C 4烯烃和C 1 -C 4烷基的氢氟烷的方法， 饱和氯化杂质，包括以下步骤：在双功能催化剂，例如负载在碳上的金和钯的合金的同时，将氢氟丙烷，烯属杂质和饱和氯化杂质的第一混合物与氢气和氟化氢同时接触， 催化氢化和氟化。 在接触步骤中，烯烃杂质转化为饱和氢化衍生物和/或饱和氢氟化衍生物，饱和氯化杂质转化为饱和加氢脱氯衍生物和/或饱和氟化衍生物。 如此形成的氢氟烷基本上不含烯烃和饱和氯化杂质，并且可以获得使用或经过进一步的纯化步骤如蒸馏以从氢氟丙烷中除去工艺衍生物（例如氢化，加氢脱氯和氢氟化衍生物）。

    Fluoroketone compounds
    27.
    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。

    Production of 2-chloro-2-hydrohexafluoropropane and azeotropes thereof with HF
    29.
    发明授权
    Production of 2-chloro-2-hydrohexafluoropropane and azeotropes thereof with HF 失效
    制备2-氯-2-氢六氟丙烷及其与HF的共沸物

    公开(公告)号：US5902911A

    公开(公告)日：1999-05-11

    申请号：US849304

    申请日：1997-06-03

    申请人： Velliyur Nott Mallikarjuna Rao ,  Edwin James Warwas

    发明人： Velliyur Nott Mallikarjuna Rao ,  Edwin James Warwas

    IPC分类号： B01J23/652 ,  C07B61/00 ,  C07C17/23 ,  C07C19/10 ,  C07C19/08 ,  B01D3/34

    CPC分类号： C07C19/10 ,  B01J23/6522 ,  C07C17/23

    摘要： A process is disclosed for the monohydrogenolysis of 2,2-dichlorohexafluoropropane to 2-chloro-2-hydrohexafluoropropane. The process involves reacting the 2,2-dichlorohexafluoropropane with hydrogen at an elevated temperature of about 150.degree. C. or less in the presence of a catalyst containing a catalytically effective amount of palladium supported on trivalent chromium oxide in the presence of an acid of the formula HZ (where Z is Cl and/or F) to produce 2-chloro-2-hydrohexafluoropropane with a selectivity of over 70% based upon the 2,2-dichlorohexafluoropropane converted. Azeotropes of 2-chloro-2-hydrohexafluoropropane with HF are also disclosed; as are processes for producing such azeotropes.

    摘要翻译： PCT No.PCT / US95 / 15625 Sec。 371日期：1997年6月3日 102（e）日期1997年6月3日PCT 1995年12月1日PCT PCT。 出版物WO96 / 日期1996年6月13日公开了2,2-二氯六氟丙烷一氢解为2-氯-2-氢六氟丙烷的方法。 该方法包括在约150℃或更低的升高的温度下，在含有催化有效量的负载在三价铬氧化物上的钯的催化剂存在下，在该酸的存在下，使2,2-二氯六氟丙烷与氢反应 （其中Z为Cl和/或F）以基于转化的2,2-二氯六氟丙烷的选择性为70％以上产生2-氯-2-氢六氟丙烷。 还公开了2-氯-2-氢六氟丙烷与HF的共沸物; 生产这种共沸物的方法也是如此。