Metal Catalyst and Method for Production Thereof
    71.
    发明申请
    Metal Catalyst and Method for Production Thereof 有权
    金属催化剂及其制备方法

    公开(公告)号:US20070244003A1

    公开(公告)日:2007-10-18

    申请号:US11628874

    申请日:2005-05-20

    IPC分类号: B01J23/00

    摘要: The present invention relates to a metal catalyst containing fine metal particles, characterized in that the fine metal particles have a particle diameter of 3 nm or less and also have a proportion of metallic bond state of 40% or more, which is ascribed by subjecting to waveform separation of a binding energy peak peculiar to the metal as measured by using an X-ray photoelectron spectrometer. The fine metal particles are preferably fine platinum particles. The fine metal particles are preferably supported on the surface of carrier particles by reducing ions of metal to be deposited through the action of a reducing agent in a reaction system of a liquid phase containing the carrier particles dispersed therein, thereby to deposit the metal on the surface of carrier particles in the form of fine particles. The proportion of metallic bond state of the fine metal particles is adjusted within the above range by reducing after deposition thereby to decrease the oxidation state.

    摘要翻译: 本发明涉及含有金属微粒的金属催化剂,其特征在于,金属微粒的粒径为3nm以下,金属结合状态的比例为40%以上,这是通过使 通过使用X射线光电子能谱仪测量的金属特有的结合能峰的波形分离。 细金属颗粒优选为铂颗粒。 金属颗粒优选通过在含有分散在其中的载体颗粒的液相的反应体系中通过还原剂的作用还原待沉积的金属离子而负载在载体颗粒的表面上,从而将金属沉积在 载体颗粒表面呈细颗粒状。 通过在沉积后减少,将金属微粒的金属结合状态的比例调节在上述范围内,从而降低氧化态。

    Granular metal powder
    72.
    发明申请
    Granular metal powder 失效
    颗粒状金属粉末

    公开(公告)号:US20070074598A1

    公开(公告)日:2007-04-05

    申请号:US10575898

    申请日:2004-06-24

    IPC分类号: C22C1/05

    摘要: When fine metal particles of a nano meter size are handled in a state of colloidal particles, it is difficult to handle them and the range of the selection of the solvent to be used is limited. The invention offers a granular metal powder that is produced by the steps of (a) preparing a suspension liquid comprising (a1) water, an organic solvent, or a mixture thereof, (a2) metal particles having an average particle diameter of at least 1 nm and at most 100 nm, and (a3) an organic compound capable of being adsorbed on the surface of the metal particles and (b) removing the water, organic solvent, or mixture thereof by drying the suspension liquid and that has an apparent density of at least 1.0 g/ml and at most 5.0 g/ml. The granular metal powder can be handled as a dry metal powder and is readily redispersed in a solvent.

    摘要翻译: 当以胶体颗粒的状态处理纳米尺寸的细金属颗粒时,难以处理它们,并且所使用的溶剂的选择范围受到限制。 本发明提供一种颗粒状金属粉末,其通过以下步骤制备:(a)制备悬浮液体,所述悬浮液体包含(a1)水,有机溶剂或其混合物,(a2)平均粒径至少为1的金属颗粒 nm和至多100nm,和(a3)能够吸附在金属颗粒表面上的有机化合物和(b)通过干燥悬浮液除去水,有机溶剂或其混合物,并且具有表观密度 至少1.0μg/ ml至多5.0μg/ ml。 粒状金属粉末可以作为干金属粉末处理,并且容易地再分散在溶剂中。

    Metal catalyst and method for production thereof
    74.
    发明授权
    Metal catalyst and method for production thereof 有权
    金属催化剂及其制造方法

    公开(公告)号:US07803734B2

    公开(公告)日:2010-09-28

    申请号:US11628874

    申请日:2005-05-20

    摘要: The present invention relates to a metal catalyst containing fine metal particles, characterized in that the fine metal particles have a particle diameter of 3 nm or less and also have a proportion of metallic bond state of 40% or more, which is ascribed by subjecting to waveform separation of a binding energy peak peculiar to the metal as measured by using an X-ray photoelectron spectrometer. The fine metal particles are preferably fine platinum particles. The fine metal particles are preferably supported on the surface of carrier particles by reducing ions of metal to be deposited through the action of a reducing agent in a reaction system of a liquid phase containing the carrier particles dispersed therein, thereby to deposit the metal on the surface of carrier particles in the form of fine particles. The proportion of metallic bond state of the fine metal particles is adjusted within the above range by reducing after deposition thereby to decrease the oxidation state.

    摘要翻译: 本发明涉及含有金属微粒的金属催化剂,其特征在于,金属微粒的粒径为3nm以下,金属结合状态的比例为40%以上,这是通过使 通过使用X射线光电子能谱仪测量的金属特有的结合能峰的波形分离。 细金属颗粒优选为铂颗粒。 金属颗粒优选通过在含有分散在其中的载体颗粒的液相的反应体系中通过还原剂的作用还原待沉积的金属离子而负载在载体颗粒的表面上,从而将金属沉积在 载体颗粒表面呈细颗粒状。 通过在沉积后减少,将金属微粒的金属结合状态的比例调节在上述范围内,从而降低氧化态。