Aerogel and metallic composites
    62.
    发明申请
    Aerogel and metallic composites 审中-公开
    气凝胶和金属复合材料

    公开(公告)号:US20040141908A1

    公开(公告)日:2004-07-22

    申请号:US10695214

    申请日:2003-10-28

    IPC分类号: C01B031/02

    摘要: A fuel cell electrode catalyst comprises a supporting structure made of a metallic composition of carbon aerogel wherein the carbon aerogel has a surface area of greater than about 400 square meters per gram (m2/g) and a pore size of greater than about 4 nm and up to about 50 nm. The crystals of a metal dispersed on the supporting structure are about 1 nm to about 3 nm in diameter. A membrane electrode assembly for a fuel cell comprises a solid electrolyte membrane and catalyst paste, slurry, or ink, disposed on the solid electrolyte membrane wherein the catalyst paste, slurry, or ink comprises a metallic composition of carbon aerogel in powder form and unagglomerated solid electrolyte and solvent dispersed within the carbon aerogel structure.

    摘要翻译: 燃料电池电极催化剂包括由碳气凝胶的金属组合物制成的支撑结构,其中碳气凝胶的表面积大于约400平方米/克(m 2 / g),孔径大于约 4nm和至多约50nm。 分散在支撑结构上的金属晶体的直径约为1nm至约3nm。 用于燃料电池的膜电极组件包括设置在固体电解质膜上的固体电解质膜和催化剂浆料,浆料或油墨,其中催化剂浆料,浆料或油墨包含粉末形式的碳气凝胶和未聚集固体的金属组合物 电解质和溶剂分散在碳气凝胶结构内。

    Process for production of carbonaceous chars having catalytic activity
    66.
    发明授权
    Process for production of carbonaceous chars having catalytic activity 有权
    具有催化活性的碳质炭的生产方法

    公开(公告)号:US06534442B1

    公开(公告)日:2003-03-18

    申请号:US09354178

    申请日:1999-07-16

    IPC分类号: C01B3112

    摘要: A process is provided for the production of a catalytically active carbonaceous char. By this process, a nitrogen-containing compound is combined with an uncarbonized nitrogen-poor carbon-containing material. The resulting mixture is then carbonized and oxidized at temperatures less than 500° C. The resulting char is next heated to temperatures greater than 500° C and subsequently activated with H2O, CO2, or O2, singly or in any combination, to result in the catalytically active carbonaceous char. The resulting catalytically active carbonaceous char has utility for the chemical conversion of peroxides, hydrides, SOX, NOX, and chloramines in liquid and/or gaseous media.

    摘要翻译: 提供了一种制备催化活性碳质炭的方法。 通过该方法,将含氮化合物与未经碳化的含氮贫碳的材料组合。 然后将所得混合物碳化并在低于500℃的温度下氧化。然后将所得炭加热至高于500℃的温度,随后以H 2 O,CO 2或O 2单独或任意组合活化,得到 催化活性炭质炭。 所得到的催化活性碳质炭可用于液体和/或气体介质中过氧化物,氢化物,SOX,NOX和氯胺的化学转化。

    High utilization supported catalyst compositions with improved resistance to poisoning and corrosion
    67.
    发明申请
    High utilization supported catalyst compositions with improved resistance to poisoning and corrosion 审中-公开
    具有改善的耐中毒和腐蚀性能的高利用率负载型催化剂组合物

    公开(公告)号:US20020155342A1

    公开(公告)日:2002-10-24

    申请号:US10114663

    申请日:2002-04-02

    摘要: A supported catalyst composition comprising a metal catalyst nanodispersed in a support that is a hard disordered carbon or carbon glass; or a partially graphitized or disordered carbon intercalation complex; or nullhouse-of-cardsnull transition metal dichalcogenide such as molybdenum disulfide (MoS2). Also disclosed are embodiments based on the above supported catalyst compositions, wherein the metal catalyst is Pt or Pt alloy, and wherein the nullporesnull comprised in the support are engineered to provide selective access to H2, but not to larger molecules, such as CO or H2O. Disclosed are methods for improving catalyst utilization, resistance to poisoning, and resistance of catalyst supports to corrosion-as well as products related thereto. Also disclosed is an MEA that comprises the supported, nanodispersed Pt and Pt alloy catalyst compositions of this invention, and a fuel cell that contains such an MEA.

    摘要翻译: 一种载体催化剂组合物,其包含纳米分散在作为硬质无序碳或碳玻璃的载体中的金属催化剂; 或部分石墨化或无序碳插层复合物; 或“家卡”过渡金属二硫属元素如二硫化钼(MoS2)。 还公开了基于上述负载的催化剂组合物的实施方案,其中金属催化剂是Pt或Pt合金,并且其中包含在载体中的“孔”被工程化以提供对H 2的选择性进入,但不提供对较大分子例如CO 或H2O。 公开了提高催化剂利用率,耐中毒性和催化剂载体耐腐蚀性的方法以及与其有关的产品。 还公开了包含本发明的负载的纳米分散Pt和Pt合金催化剂组合物的MEA和包含这种MEA的燃料电池。

    Process for making a co-impregnant catalyst carbon
    68.
    发明授权
    Process for making a co-impregnant catalyst carbon 失效
    制备共浸渍催化剂碳的方法

    公开(公告)号:US06310000B1

    公开(公告)日:2001-10-30

    申请号:US08342817

    申请日:1994-11-21

    IPC分类号: B01J2020

    CPC分类号: B01J21/18 B01J37/084

    摘要: A process is provided for the manufacture of a carbonaceous char capable of catalyzing the rapid decomposition of hydrogen peroxide in aqueous solutions. This carbonaceous char is produced from a bituminous coal or a bituminous material that has been carbonized and extensively oxidized at low (less than 700° C.) temperatures. The resultant carbonized and oxidized bituminous coal or bituminous material is then contacted with a nitrogen-containing compound in combination with at least one of sucrose or fructose as the temperature of the low-temperature char is increased to greater than 700° C. This treatment results in a high-temperature char which may then be activated as desired. These activated chars show the aforementioned ability to rapidly decompose aqueous solutions of hydrogen peroxide and are also useful for the catalytic decomposition of H2S, SOx, NOx, chloramines, and/or peroxides in liquid and/or gaseous streams.

    摘要翻译: 提供了一种制备能够催化水溶液中过氧化氢快速分解的碳质炭的方法。 这种碳质炭是由在低(低于700℃)的温度下被碳化并广泛氧化的烟煤或沥青材料制成的。 然后随着低温焦炭的温度升高至大于700℃,所得到的碳化和氧化烟煤或沥青材料与含氮化合物与蔗糖或果糖中的至少一种联合。该处理结果 在高温焦炭中,然后可根据需要活化。 这些活性炭显示出上述快速分解过氧化氢水溶液的能力,并且也可用于在液体和/或气流中催化分解H 2 S,SO x,NO x,氯胺和/或过氧化物。

    HYDROCARBON CONVERSION CATALYST COMPOSITION AND PROCESSES THEREFOR AND THEREWITH
    69.
    发明申请
    HYDROCARBON CONVERSION CATALYST COMPOSITION AND PROCESSES THEREFOR AND THEREWITH 无效
    碳氢转化催化剂组合物及其过程及其应用

    公开(公告)号:US20010008949A1

    公开(公告)日:2001-07-19

    申请号:US08941763

    申请日:1997-09-30

    IPC分类号: C07C002/52 B01J029/87

    摘要: A catalyst composition, a process for producing the composition and a hydrocarbon conversion process for converting a saturated hydrocarbon to a C6 to C8 aromatic hydrocarbon such as a xylene are disclosed. The composition comprises a zeolite having incorporated therein a promoter comprising carbon and a metal or metal oxide. The composition can be produced by incorporating a metal compound into the zeolite followed by thermal treatment of the resulting zeolite with a hydrocarbon. The hydrocarbon conversion process comprises contacting a fluid which comprises a saturated hydrocarbon with the catalyst composition under a condition sufficient to effect the conversion of a saturated hydrocarbon to a C6 to C8 aromatic hydrocarbon.

    摘要翻译: 公开了一种催化剂组合物,该组合物的制备方法和将饱和烃转化为C 6至C 8芳族烃如二甲苯的烃转化方法。 该组合物包括其中掺入了包含碳和金属或金属氧化物的促进剂的沸石。 可以通过将金属化合物引入沸石中,然后用烃对所得沸石进行热处理来制备组合物。 烃转化方法包括在足以使饱和烃转化为C6至C8芳族烃的条件下使含有饱和烃的流体与催化剂组合物接触。