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60 条记录 (耗时 0.031 秒)

    Hydrogen transport membranes for dehydrogenation reactions
    34.
    发明授权
    Hydrogen transport membranes for dehydrogenation reactions 有权
    用于脱氢反应的氢传输膜

    公开(公告)号：US07329791B2

    公开(公告)日：2008-02-12

    申请号：US10814210

    申请日：2004-03-31

    申请人： Uthamalingam Balachandran

    发明人： Uthamalingam Balachandran

    IPC分类号： C07C5/333 ,  C07C5/327 ,  C07C7/144 ,  B01D53/22

    CPC分类号： C07C5/3337 ,  B01J4/04 ,  B01J8/009 ,  B01J19/2475 ,  C07C2523/50 ,  C07C2523/66 ,  C07C11/02

    摘要： A method of converting C2 and/or higher alkanes to olefins by contacting a feedstock containing C2 and/or higher alkanes with a first surface of a metal composite membrane of a sintered homogenous mixture of an Al oxide or stabilized or partially stabilized Zr oxide ceramic powder and a metal powder of one or more of Pd, Nb, V, Zr, Ta and/or alloys or mixtures thereof. The alkanes dehydrogenate to olefins by contact with the first surface with substantially only atomic hydrogen from the dehydrogenation of the alkanes passing through the metal composite membrane. Apparatus for effecting the conversion and separation is also disclosed.

    摘要翻译： 将C 2 H 2和/或更高级烷烃转化成烯烃的方法是将含C 2 H 2和/或更高级烷烃的原料与金属复合膜的第一表面 Al氧化物或稳定的或部分稳定的Zr氧化物陶瓷粉末和Pd，Nb，V，Zr，Ta和/或其合金或其混合物中的一种或多种的金属粉末的均匀混合物。 烷烃通过与通过金属复合膜的烷烃的脱氢基本上仅与原子氢接触而与第一表面接触而脱氢成烯烃。 还公开了用于实现转换和分离的装置。

    Hydrogen transport membranes for dehydrogenation reactions
    35.
    发明申请
    Hydrogen transport membranes for dehydrogenation reactions 有权
    用于脱氢反应的氢传输膜

    公开(公告)号：US20050222479A1

    公开(公告)日：2005-10-06

    申请号：US10814210

    申请日：2004-03-31

    申请人： Uthamalingam Balachandran

    发明人： Uthamalingam Balachandran

    IPC分类号： C07C5/327 ,  C07C5/333 ,  C07C11/04 ,  C07C11/06

    CPC分类号： C07C5/3337 ,  B01J4/04 ,  B01J8/009 ,  B01J19/2475 ,  C07C2523/50 ,  C07C2523/66 ,  C07C11/02

    摘要： A method of converting C2 and/or higher alkanes to olefins by contacting a feedstock containing C2 and/or higher alkanes with a first surface of a metal composite membrane of a sintered homogenous mixture of an Al oxide or stabilized or partially stabilized Zr oxide ceramic powder and a metal powder of one or more of Pd, Nb, V, Zr, Ta and/or alloys or mixtures thereof. The alkanes dehydrogenate to olefins by contact with the first surface with substantially only atomic hydrogen from the dehydrogenation of the alkanes passing through the metal composite membrane. Apparatus for effecting the conversion and separation is also disclosed.

    摘要翻译： 将C 2 H 2和/或更高级烷烃转化为烯烃的方法是将含有C 2 - 和/或更高级烷烃的原料与金属复合膜的第一表面接触 Al氧化物或稳定的或部分稳定的Zr氧化物陶瓷粉末和Pd，Nb，V，Zr，Ta和/或其合金或其混合物中的一种或多种的金属粉末的均匀混合物。 烷烃通过与通过金属复合膜的烷烃的脱氢基本上仅与原子氢接触而与第一表面接触而脱氢成烯烃。 还公开了用于实现转换和分离的装置。

    High temperature seal for joining ceramics and metal alloys
    37.
    发明授权
    High temperature seal for joining ceramics and metal alloys 失效
    用于连接陶瓷和金属合金的高温密封

    公开(公告)号：US5725218A

    公开(公告)日：1998-03-10

    申请号：US749980

    申请日：1996-11-15

    申请人： P. Subraya Maiya ,  John J. Picciolo ,  James E. Emerson ,  Joseph T. Dusek ,  Uthamalingam Balachandran

    发明人： P. Subraya Maiya ,  John J. Picciolo ,  James E. Emerson ,  Joseph T. Dusek ,  Uthamalingam Balachandran

    IPC分类号： C03C8/24 ,  F16J15/14

    CPC分类号： C03C8/24 ,  Y10S277/936 ,  Y10S277/94

    摘要： For a combination of a membrane of SrFeCo.sub.0.5 O.sub.x and an Inconel alloy, a high-temperature seal is formed between the membrane and the alloy. The seal is interposed between the alloy and the membrane, and is a fritted compound of Sr oxide and boric oxide and a fritted compound of Sr, Fe and Co oxides. The fritted compound of SrFeCo.sub.0.50 O.sub.x is present in the range of from about 30 to 70 percent by weight of the total sealant material and the fritted compound of Sr oxide and boric oxide has a mole ratio of 2 moles of the Sr oxide for each mole of boric oxide. A method of sealing a ceramic to an Inconel metal alloy is also disclosed.

    摘要翻译： 对于SrFeCo0.5Ox膜和Inconel合金的组合，在膜和合金之间形成高温密封。 密封件介于合金和膜之间，并且是Sr氧化物和氧化硼的烧结化合物和Sr，Fe和Co氧化物的烧结化合物。 烧结的SrFeCo0.50Ox化合物的存在量为总密封剂材料的约30至70重量％，Sr氧化物和氧化硼的烧结化合物的摩尔比为每摩尔2摩尔Sr氧化物 的氧化硼。 还公开了将陶瓷密封到铬镍铁合金金属合金的方法。

    Rapid formation of phase-clean 110 K (Bi-2223) powders derived via freeze-drying process
    40.
    发明授权
    Rapid formation of phase-clean 110 K (Bi-2223) powders derived via freeze-drying process 失效
    通过冷冻干燥过程快速形成110K（Bi-2223）相粉碎粉末

    公开(公告)号：US5523285A

    公开(公告)日：1996-06-04

    申请号：US315452

    申请日：1994-09-30

    申请人： Uthamalingam Balachandran

    发明人： Uthamalingam Balachandran

    IPC分类号： C01G29/00 ,  H01L39/24 ,  H01B12/00 ,  H01L39/12

    CPC分类号： H01L39/2477 ,  C01G29/006 ,  C01P2002/02 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2002/88 ,  C01P2004/03 ,  C01P2004/04 ,  Y10S505/733 ,  Y10S505/737 ,  Y10S505/782

    摘要： A process for the preparation of amorphous precursor powders for Pb-doped Bi.sub.2 Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.x (2223) includes a freeze-drying process incorporating a splat-freezing step. The process generally includes splat freezing a nitrate solution of Bi, Pb, Sr, Ca, and Cu to form flakes of the solution without any phase separation; grinding the frozen flakes to form a powder; freeze-drying the frozen powder; heating the dried powder to form a dry green precursor powders; denitrating the green-powders; heating the denitrated powders to form phase-clean Bi-2223 powders. The grain boundaries of the 2223 grains appear to be clean, leading to good intergrain contact between 2223 grains.

    摘要翻译： 用于制备Pb掺杂Bi2Sr2Ca2Cu3Ox（2223）的无定形前体粉末的方法包括结合冷冻步骤的冷冻干燥方法。 该方法通常包括分离冷冻Bi，Pb，Sr，Ca和Cu的硝酸盐溶液以形成溶液的薄片而没有任何相分离; 研磨冷冻的薄片以形成粉末; 冷冻干燥冷冻粉末; 加热干燥粉末形成干绿色前体粉末; 脱绿粉; 加热脱硝粉末形成相清洁的Bi-2223粉末。 2223颗晶粒的晶界看起来很干净，导致2223颗粒之间的良好的晶间接触。