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    Compositions containing chromium, oxygen, and at least two modifier metals selected the group consisting of gold, silver, and palladium, their preparation, and their use as catalysts and catalyst precursors
    12.
    发明申请
    Compositions containing chromium, oxygen, and at least two modifier metals selected the group consisting of gold, silver, and palladium, their preparation, and their use as catalysts and catalyst precursors 审中-公开
    含有铬，氧和至少两种改性金属的组合物选自金，银和钯，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：US20080207962A1

    公开(公告)日：2008-08-28

    申请号：US12070784

    申请日：2008-02-21

    Applicant: Velliyur Nott Mallikarjuna Rao ,  Allen Capron Sievert

    Inventor： Velliyur Nott Mallikarjuna Rao ,  Allen Capron Sievert

    IPC: C07C17/23 ,  B01J23/26

    CPC classification number: C07C19/08 ,  B01J23/6522 ,  B01J23/685 ,  B01J37/0201 ,  B01J37/03 ,  B01J37/14 ,  B01J37/26 ,  C07C17/04 ,  C07C17/206 ,  C07C17/21 ,  C07C17/23 ,  C07C17/25 ,  C07C21/18 ,  C07C19/10

    Abstract: A catalyst composition is disclosed that includes chromium, oxygen, and at least two of gold, silver, and palladium as essential constituent elements. The amount of modifier metals (gold, silver, and/or palladium) in the composition is from about 0.05 atom % to about 10 atom % based on the total amount of chromium and modifier metals. Also disclosed is a process for changing the fluorine distribution (i.e., content and/or arrangement) in a hydrocarbon or halogenated hydrocarbon in the presence of the catalyst composition; and methods for preparing said catalyst composition. One preparation method involves (a) co-precipitating a solid by adding ammonium hydroxide (aqueous ammonia) to an aqueous solution of soluble salts of modifier metals and a soluble chromium salt that contains at least three moles of nitrate per mole of chromium in the solution and has a modifier metal content of from about 0.05 atom % to about 10 atom % of the total content of modifier metals and chromium in the solution to form an aqueous mixture containing co-precipitated solid; (b) drying the co-precipitated solid formed in (a); and (c) calcining the dried solid formed in (b) in an atmosphere containing at least 10% oxygen by volume. Another preparation method involves (a) impregnating solid chromium oxide with a solution of a soluble modifier metal salts; (b) drying the impregnated chromium oxide prepared in (a); and optionally; (c) calcining the dried solid. Yet another preparation method involves mixing multiple compositions, each comprising chromium, oxygen, and at least one modifier metal.

    Abstract translation: 公开了一种催化剂组合物，其包括铬，氧和至少两种金，银和钯作为必需组成元素。 组合物中改性金属（金，银和/或钯）的量相对于铬和改性金属的总量为约0.05原子％至约10原子％。 还公开了在催化剂组合物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; 以及制备所述催化剂组合物的方法。 一种制备方法包括（a）通过向改性剂金属的可溶性盐的水溶液中加入氢氧化铵（氨水）并在溶液中每摩尔铬含有至少三摩尔硝酸盐的可溶性铬盐共沉淀固体 并且具有改性剂金属含量为溶液中改性剂金属和铬的总含量的约0.05原子％至约10原子％，以形成含共沉淀固体的含水混合物; （b）干燥（a）中形成的共沉淀固体; 和（c）在（b）中形成的干燥固体在含有至少10体积％氧气的气氛中煅烧。 另一种制备方法包括（a）用可溶性修饰金属盐溶液浸渍固体氧化铬; （b）干燥（a）中制备的浸渍的氧化铬; 和可选地; （c）煅烧干燥的固体。 另一种制备方法包括混合多种组合物，每种组合物包含铬，氧和至少一种改性金属。

    Process for the reduction of carbon monoxide and carbonyl sulfide emissions
    14.
    发明申请
    Process for the reduction of carbon monoxide and carbonyl sulfide emissions 失效
    降低一氧化碳和羰基硫化物排放的方法

    公开(公告)号：US20040028591A1

    公开(公告)日：2004-02-12

    申请号：US10463788

    申请日：2003-06-16

    Inventor： Dale Robert Coulson ,  Norman Herron ,  Kostantinos Kourtakis ,  Stephen E. Lyke

    IPC: B01J023/10 ,  B01D053/62

    CPC classification number: B01D53/864 ,  B01D53/8606 ,  B01J23/40 ,  B01J23/66 ,  B01J23/685 ,  B01J23/72 ,  B01J23/8876 ,  B01J23/89 ,  B01J37/32 ,  Y10S502/506 ,  Y10S502/514

    Abstract: Carbon monoxide and carbonyl sulfide emissions are reduced in manufacturing processes, including titanium tetrachloride production processes. Gas is contacted with CO, COS, and an oxygen-containing gas with a suitable catalyst. The catalyst may be a metal oxide catalyst containing bismuth, cobalt and nickel, a xerogel or aerogel catalyst containing Au, Rh, Ru and Co in aluminum oxide/oxyhydroxide matrices, or a supported metal catalyst that contains at least one metal from the group Pd, Rh, Ru and Cu. In the latter case, the catalyst support is contains alumina or carbon. A catalyst composite of Au, Rh, Ru and Cr, and cerium oxide and lanthanum oxide may also be used.

    Abstract translation: 一氧化碳和羰基硫化物的排放在制造过程中减少，包括四氯化钛生产过程。 气体与CO，COS和含氧气体与合适的催化剂接触。 催化剂可以是含有铋，钴和镍的金属氧化物催化剂，在氧化铝/羟基氧化物基质中含有Au，Rh，Ru和Co的干凝胶或气凝胶催化剂，或者载有金属催化剂，其包含至少一种Pd ，Rh，Ru和Cu。 在后一种情况下，催化剂载体包含氧化铝或碳。 还可以使用Au，Rh，Ru和Cr以及氧化铈和氧化镧的催化剂复合物。

    Preparation of epoxides from alkanes using lanthanide-promoted silver catalysts
    15.
    发明申请
    Preparation of epoxides from alkanes using lanthanide-promoted silver catalysts 失效
    使用镧系元素促进的银催化剂从烷烃制备环氧化物

    公开(公告)号：US20020161249A1

    公开(公告)日：2002-10-31

    申请号：US09792390

    申请日：2001-02-22

    Inventor： Guido Mul ,  Marianna F. Asaro ,  Albert S. Hirschon ,  Robert B. Wilson JR.

    IPC: C07D301/02

    CPC classification number: C07D301/22 ,  B01J23/002 ,  B01J23/66 ,  B01J23/685

    Abstract: A process is provided for use in the conversion of alkanes into alkylene oxides, having particular utility in the conversion of propane to form propylene oxide, using a lanthanide-promoted, supported, silver catalyst prepared via precipitation. A preferred embodiment uses silver nitrate and lanthanum nitrate to form the catalyst on a BaCO3 support.

    Abstract translation: 提供了一种用于将烷烃转化为环氧烷烃的方法，其特别用途是使用通过沉淀制备的镧系元素促进的负载型银催化剂将丙烷转化成环氧丙烷。 优选的实施方案使用硝酸银和硝酸镧在BaCO 3载体上形成催化剂。

    Compositions containing chromium, oxygen and gold, their preparation, and their use as catalysts and catalyst precursors
    20.
    发明申请
    Compositions containing chromium, oxygen and gold, their preparation, and their use as catalysts and catalyst precursors 审中-公开
    含有铬，氧和金的组合物，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：US20080207964A1

    公开(公告)日：2008-08-28

    申请号：US12070827

    申请日：2008-02-21

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

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

    IPC: C07C17/04 ,  C07C17/02 ,  B01J27/132 ,  B01J23/68

    CPC classification number: C07C19/08 ,  B01J23/685 ,  B01J35/0013 ,  B01J35/006 ,  B01J37/0201 ,  B01J37/03 ,  B01J37/14 ,  B01J37/26 ,  C07C17/206 ,  C07C17/21 ,  C07C17/23 ,  C07C17/25 ,  C07C21/18 ,  C07C19/10

    Abstract: A catalyst composition is disclosed that includes chromium, oxygen, and gold as essential constituent elements. The amount of gold in the composition is from about 0.05 atom % to about 10 atom % based on the total amount of chromium and gold. Also disclosed is a process for changing the fluorine distribution (i.e., content and/or arrangement) in a hydrocarbon or halogenated hydrocarbon in the presence of the catalyst composition; and methods for preparing said catalyst composition. One preparation method involves; (a) co-precipitating a solid by adding ammonium hydroxide (aqueous ammonia) to an aqueous solution of a soluble gold salt and a soluble chromium salt that contains at least three moles of nitrate per mole of chromium in the solution and has a gold content of from about 0.05 atom % to about 10 atom % of the total content of gold and chromium in the solution to form an aqueous mixture containing co-precipitated solid; (b) drying the co-precipitated solid formed in (a); and (c) calcining the dried solid formed in (b) in an atmosphere containing at least 10% oxygen by volume. Another preparation method involves (a) impregnating solid chromium oxide with a solution of a soluble gold salt, (b) drying the impregnated chromium oxide prepared in (a); and optionally, (c) calcining the dried solid. A third preparation method involves (a) evaporating an aqueous solution of chromium(VI) oxide and a soluble gold salt to form a solid; (b) drying the solid formed in (a); and (c) calcining the dried solid formed in (b) in an atmosphere containing at least 10% oxygen by volume.

    Abstract translation: 公开了一种催化剂组合物，其包括铬，氧和金作为必要的组分元素。 基于铬和金的总量，组合物中的金的量为约0.05原子％至约10原子％。 还公开了在催化剂组合物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; 以及制备所述催化剂组合物的方法。 一种制备方法涉及到 （a）通过向溶液中每摩尔铬含有至少三摩尔硝酸盐的可溶性金盐和可溶性铬盐的水溶液中加入氢氧化铵（氨水）共沉淀固体，并且具有金含量 为溶液中金和铬的总含量的约0.05原子％至约10原子％，以形成含共沉淀固体的含水混合物; （b）干燥（a）中形成的共沉淀固体; 和（c）在（b）中形成的干燥固体在含有至少10体积％氧气的气氛中煅烧。 另一种制备方法包括（a）用可溶性金盐溶液浸渍固体氧化铬，（b）干燥（a）中制备的浸渍的氧化铬; 和（c）煅烧干燥的固体。 第三制备方法包括（a）蒸发氧化铬（VI）的水溶液和可溶性金盐以形成固体; （b）干燥（a）中形成的固体; 和（c）在（b）中形成的干燥固体在含有至少10体积％氧气的气氛中煅烧。

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