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    Hydrophobic composite Pd-membrane catalyst useful for non-hazardous direct oxidation of hydrogen by oxygen to hydrogen peroxide and method of its preparation
    1.
    发明授权
    Hydrophobic composite Pd-membrane catalyst useful for non-hazardous direct oxidation of hydrogen by oxygen to hydrogen peroxide and method of its preparation 失效
    疏水复合Pd膜催化剂用于氧气对氧气的非危险的直接氧化过氧化氢及其制备方法

    公开(公告)号：US06448199B1

    公开(公告)日：2002-09-10

    申请号：US09655978

    申请日：2000-09-05

    申请人： Vasant Ramchandra Choudhary ,  Subhash Dwarkanath Sansare ,  Abaji Govind Gaikwad

    发明人： Vasant Ramchandra Choudhary ,  Subhash Dwarkanath Sansare ,  Abaji Govind Gaikwad

    IPC分类号： B01J2342

    CPC分类号： B01J23/38 ,  B01J23/44 ,  B01J35/065

    摘要： A hydrophobic composite Pd-membrane catalyst, useful for the non-hazardous direct oxidation of hydrogen by oxygen to hydrogen peroxide, without a gas phase mixing of hydrogen and oxygen or air, having the general formula: HPM (c)/SOMF (b)/MxPd1−x (a)/IPM wherein, IPM is an inorganic porous membrane, MxPd1−x is a metal alloy, permeable only to hydrogen gas, Pd is a palladium metal; M is a metal other than palladium, or a mixture of two or more thereof; x is a mole fraction of the metal M in the metal alloy (MxPd1−x), a, in the round bracket, is a weight of the metal alloy per unit area of IPM; SOMF is a surface oxidized thin metal film comprising palladium b, in the round bracket, is a thickness of SOMF; HPM is a hydrophobic polymer membrane and c, in the round bracket , is a weight of the HPM per unit area of SOMF and a process for producing the said catalyst.

    摘要翻译： 具有以下通式的HPM（c）/ SOMF（b））的疏水性复合Pd膜催化剂，其用于将氢气氧化成过氧化氢而无气态混合氢气和空气的非危险性直接氧化， / MxPd1-x（a）/ IPM其中，IPM是无机多孔膜，MxPd1-x是仅对氢气可渗透的金属合金，Pd是钯金属; M是除钯以外的金属，或其两种以上的混合物; x是金属合金（MxPd1-x）中的金属M的摩尔分数，圆形支架中的a是每单位面积IPM的金属合金的重量; SOMF是包含钯b的表面氧化薄金属膜，在圆形支架中是SOMF的厚度; HPM是疏水性聚合物膜，c在圆形支架中，是单位面积的SOMF的HPM的重量和用于生产所述催化剂的方法。

    Membrane process for the production of hydrogen peroxide by non-hazardous direct oxidation of hydrogen by oxygen using a novel hydrophobic composite Pd-membrane catalyst
    3.
    发明授权
    Membrane process for the production of hydrogen peroxide by non-hazardous direct oxidation of hydrogen by oxygen using a novel hydrophobic composite Pd-membrane catalyst 失效
    使用新的疏水复合Pd膜催化剂通过氧的非危险的直接氧化氧气生产过氧化氢的膜工艺

    公开(公告)号：US06432376B1

    公开(公告)日：2002-08-13

    申请号：US09655970

    申请日：2000-09-05

    申请人： Vasant Ramchandra Choudhary ,  Subhash Dwarkanath Sansare ,  Abaji Govind Gaikwad

    发明人： Vasant Ramchandra Choudhary ,  Subhash Dwarkanath Sansare ,  Abaji Govind Gaikwad

    IPC分类号： C01B1501

    CPC分类号： B01J31/06 ,  B01J23/44 ,  B01J35/065 ,  B01J2231/70 ,  C01B3/501 ,  C01B15/029 ,  C01B2203/041 ,  C01B2203/0495

    摘要： The above objects are achieved by providing a novel process for the production of hydrogen peroxide, by the non-hazardous direct oxidation of hydrogen by oxygen to hydrogen peroxide, without the formation of an explosive H2 and O2 gas mixture, using a novel tubular hydrophobic composite Pd-membrane catalyst, represented by a formula: HPM (c)/SOMF (b)/MxPd1−x(a)/IPM Wherein: IPM is an inorganic porous membrane, permeable to all gases and vapors, in a form of tube having a thickness of at least 0.5 mm and internal diameter of at least 0.6 cm; Mx Pd1−x is a metal alloy, permeable only to hydrogen gas, deposited on the inner side of IPM; Pd is a palladium metal; M is a metal selected from copper, silver, gold, noble metals other than palladium, or a mixture of two or more thereof; x is a mole fraction of the metal M in the metal alloy (MxPd1−x) in the range from about 0.03 to about 0.6; (a) is a weight of the metal alloy per unit area of IPM in the range from about 5.0 g.m−2 to about 500 g.m−2; SOMF is a surface oxidized thin metal film comprising palladium which is permeable only to hydrogen, deposited on the metal alloy (Mx Pd1−x); (b) is a thickness of SOMF in the range from about 0.05 &mgr;m to about 5.0 &mgr;m; HPM is a hydrophobic polymer membrane permeable to hydrogen and oxygen gases and also to vapors of water and hydrogen peroxide but not to liquid water or aqueous solution; and (c) is a weight of the HPM per unit area of SOMF in the range from about 0.2 g.m−2 to about 40 g.m−2.

    摘要翻译： 上述目的通过提供一种用于生产过氧化氢的新方法，通过将氧气由氧气直接氧化成过氧化氢，而不形成爆炸性的H 2和O 2气体混合物，使用新的管状疏水性复合物 Pd膜催化剂，由下式表示：其中：IPM是一种无机多孔膜，可渗透所有气体和蒸汽，其形式为管，其厚度至少为0.5mm，内径为至少0.6cm; Mx Pd1-x是一种金属合金，只能渗透氢气，沉积在IPM的内侧; Pd是钯金属; M是选自铜，银，金，钯以外的贵金属或其两种以上的混合物的金属; x是金属合金（MxPd1-x）中的金属M在约0.03至约0.6的范围内的摩尔分数; （a）是每单位面积IPM的金属合金的重量在约5.0g.m-2至约500g.m-2的范围内; SOMF是沉积在金属合金（Mx Pd1-x）上的，仅透氢的钯的表面氧化薄金属膜; （b）是约0.05μm至约5.0μm范围内的SOMF的厚度; HPM是一种对氢气和氧气可透过的疏水性聚合物膜，也是水和过氧化氢的蒸气，而不是液态水或水溶液; 和（c）是每单位面积的SOMF的HPM的重量在约0.2g.m-2至约40g.m-2的范围内。