SILICA-BASED COMPOSITE OXIDE FIBER, CATALYST FIBER COMPRISING THE SAME, AND PROCESS FOR PRODUCING THE SAME
    3.
    发明申请
    SILICA-BASED COMPOSITE OXIDE FIBER, CATALYST FIBER COMPRISING THE SAME, AND PROCESS FOR PRODUCING THE SAME 审中-公开
    二氧化硅基复合氧化物纤维,包含其的催化纤维及其制造方法

    公开(公告)号:US20100093524A1

    公开(公告)日:2010-04-15

    申请号:US12529497

    申请日:2008-02-29

    IPC分类号: B01J21/06 B01J21/08 B01J23/44

    摘要: An object is to provide a silica-based composite oxide fiber which is a continuous fiber high in strength and has, in the fiber surface thereof, mesopores each having an appropriate size, and to provide a catalyst fiber, containing the silica-based composite oxide fiber, in which a noble metal catalyst can be selectively carried into its pores, whereby preventing sintering of the noble metal catalyst.The silica-based composite oxide fiber comprises a composite oxide phase composed of an oxide phase made mainly of a silica component (first phase) and a metal oxide phase comprising one or more metals other than silica (second phase), wherein a content by percentage of at least one of metal elements of metal oxides constituting the metal oxide phase (second phase) increases with a gradient toward a surface of the fiber, and wherein the metals that constitute the metal oxide phase (second phase) are in the form of particles, and mesopores extending from the fiber surface to the inside of the fiber and having an average pore diameter of 2 to 30 nm are formed between the particles.

    摘要翻译: 本发明的目的是提供一种二氧化硅系复合氧化物纤维,其是高强度的连续纤维,在其纤维表面中具有适当尺寸的中孔,并且提供含有二氧化硅系复合氧化物 纤维,其中贵金属催化剂可以选择性地携带到其孔中,从而防止贵金属催化剂的烧结。 二氧化硅系复合氧化物纤维包括由主要由二氧化硅组分(第一相)制成的氧化物相和包含除二氧化硅之外的一种或多种金属的金属氧化物相(第二相)组成的复合氧化物相,其中按百分比计的含量 构成金属氧化物相(金属氧化物相)的金属氧化物的金属元素中的至少一种(第二相)随着朝向纤维表面的梯度而增加,并且其中构成金属氧化物相(第二相)的金属为颗粒形式 并且在颗粒之间形成从纤维表面延伸到纤维内部并具有2至30nm的平均孔径的介孔。