Ammonia synthesis process
    4.
    发明授权
    Ammonia synthesis process 失效
    氨合成工艺

    公开(公告)号:US08623313B2

    公开(公告)日:2014-01-07

    申请号:US13143619

    申请日:2009-12-22

    IPC分类号: C01C1/04

    摘要: The invention provides a process for efficient synthesis of ammonia. The process includes a water-splitting step in which water is decomposed to obtain a first source gas comprising hydrogen and oxygen, a first oxygen removal step in which the oxygen contained in the first source gas is at least partially separated and removed by an oxygen separating membrane or hydrogen separating membrane to obtain a second source gas having a lower oxygen concentration than the first source gas, a second oxygen removal step in which the oxygen in the second source gas is reacted with hydrogen to produce water for removal, or is adsorbed onto an adsorption medium for removal, to obtain a third source gas having a lower oxygen concentration than the second source gas, and an ammonia synthesis step in which the hydrogen in the third source gas is reacted with nitrogen to synthesize ammonia.

    摘要翻译: 本发明提供了一种有效合成氨的方法。 该方法包括水分解步骤,其中水被分解以获得包含氢和氧的第一源气体,第一氧除去步骤,其中通过氧分离将至少部分地分离和除去第一源气体中所含的氧 膜或氢分离膜,以获得具有比第一源气体低的氧浓度的第二源气体;第二氧除去步骤,其中第二源气体中的氧与氢反应以产生除去水或吸附到 用于除去的吸附介质,以获得具有比第二源气体低的氧浓度的第三源气体,以及氨合成步骤,其中第三源气体中的氢与氮反应以合成氨。

    AMMONIA OXIDATION/DECOMPOSITION CATALYST
    5.
    发明申请
    AMMONIA OXIDATION/DECOMPOSITION CATALYST 有权
    氨基氧化/分解催化剂

    公开(公告)号:US20130156687A1

    公开(公告)日:2013-06-20

    申请号:US13819070

    申请日:2010-08-31

    IPC分类号: C01B3/04

    摘要: The present invention provides an ammonia oxidation/decomposition catalyst including a support composed of an oxidizable and reducible metal oxide and a catalytically active metal supported thereon. By bringing the ammonia oxidation/decomposition catalyst including a support composed of an oxidizable and reducible metal oxide and a catalytically active metal supported thereon into contact with ammonia and air at ordinary temperature, the support in a reduced state reacts with oxygen to generate oxidation heat, and the temperature of the catalyst layer is increased in a moment. Once the temperature of the catalyst layer is increased to a temperature at which ammonia and oxygen react with each other, the ammonia oxidation reaction proceeds autonomously after that. The heat generated in this exothermic reaction is used in the course of decomposing ammonia in the presence of the catalytically active metal, thereby producing hydrogen.

    摘要翻译: 本发明提供一种氨氧化/分解催化剂,其包含由可氧化还原性金属氧化物和负载在其上的催化活性金属构成的载体。 通过将包含由可氧化还原性金属氧化物构成的载体和负载有催化活性金属的氨氧化/分解催化剂在常温下与氨和空气接触,还原态的载体与氧气反应产生氧化热, 并且催化剂层的温度暂时增加。 一旦催化剂层的温度升高到氨和氧彼此反应的温度,氨氧化反应就自动进行。 在该放热反应中产生的热在催化活性金属存在下分解氨的过程中使用,从而产生氢。

    Ammonia synthesis process
    7.
    发明授权

    公开(公告)号:US08585996B2

    公开(公告)日:2013-11-19

    申请号:US13143619

    申请日:2009-12-22

    IPC分类号: C01C1/04

    摘要: The invention provides a process for efficient synthesis of ammonia. The process includes a water-splitting step in which water is decomposed to obtain a first source gas comprising hydrogen and oxygen, a first oxygen removal step in which the oxygen contained in the first source gas is at least partially separated and removed by an oxygen separating membrane or hydrogen separating membrane to obtain a second source gas having a lower oxygen concentration than the first source gas, a second oxygen removal step in which the oxygen in the second source gas is reacted with hydrogen to produce water for removal, or is adsorbed onto an adsorption medium for removal, to obtain a third source gas having a lower oxygen concentration than the second source gas, and an ammonia synthesis step in which the hydrogen in the third source gas is reacted with nitrogen to synthesize ammonia.

    AMMONIA OXIDATION/DECOMPOSITION CATALYST
    8.
    发明申请
    AMMONIA OXIDATION/DECOMPOSITION CATALYST 审中-公开
    氨基氧化/分解催化剂

    公开(公告)号:US20130288890A1

    公开(公告)日:2013-10-31

    申请号:US13883302

    申请日:2011-11-09

    摘要: Provided is an ammonia oxidation/decomposition catalyst which can decrease the reduction temperature of a support, which is required for the catalyst to have a property of being activated at room temperature, and also can render a property of being activated at a temperature lower than room temperature. The ammonia oxidation/decomposition catalyst of the present invention is an ammonia oxidation/decomposition catalyst, comprising: a catalyst support composed of a composite oxide of cerium oxide and zirconium oxide; and at least one metal selected from the group consisting of metals of group 6A, group 7A, group 8, and group 1B as a catalytically active metal deposited thereon, characterized in that the molar concentration of zirconium oxide in the catalyst support is from 10 to 90%.

    摘要翻译: 提供了能够降低载体的还原温度的氨氧化/分解催化剂,催化剂具有在室温下被活化的性质,并且还可以使其在低于室温的温度下活化 温度。 本发明的氨氧化/分解催化剂是氨氧化/分解催化剂,包括:由氧化铈和氧化锆的复合氧化物构成的催化剂载体; 和选自6A,7A,8族和1B族金属中的至少一种金属作为沉积在其上的催化活性金属,其特征在于催化剂载体中氧化锆的摩尔浓度为10〜 90%。