Particle Filter Provided with Catalytic Coating
    9.
    发明申请
    Particle Filter Provided with Catalytic Coating 审中-公开
    带有催化涂层的颗粒过滤器

    公开(公告)号:US20080026141A1

    公开(公告)日:2008-01-31

    申请号:US11628657

    申请日:2005-06-04

    CPC分类号: B01D53/944

    摘要: The invention relates to particle filters having an open pore structure for separating particles from fluids, which, for modification of their properties or for treatment of the fluid to be filtered, are provided with additional metal oxides or mixed metal oxides and optionally with further catalytically active components. In particular, the invention relates to particle filters treated with a catalytically active material, which is used for the treatment of the waste gases from combustion processes, in particular for the treatment of the exhaust gases of internal combustion engines. By impregnation of the filter bodies in a solution of a metal oxide sol or a mixed metal oxide sol, the preformed sol particles are deposited on the pore surfaces. Consequently, catalytic activations of the filter with good temperature stability in combination with a moderate increase in the exhaust gas back-pressure are possible.

    摘要翻译: 本发明涉及具有用于从流体中分离颗粒的开孔结构的颗粒过滤器,为了改变其性能或处理待过滤的流体,提供另外的金属氧化物或混合金属氧化物,并且任选具有进一步的催化活性 组件。 特别地,本发明涉及用催化活性材料处理的颗粒过滤器,其用于处理来自燃烧过程的废气,特别是用于处理内燃机的废气。 通过在金属氧化物溶胶或混合金属氧化物溶胶的溶液中浸渍过滤体,预先形成的溶胶颗粒沉积在孔表面上。 因此,具有良好的温度稳定性的过滤器的催化活化与废气背压的适度增加相结合是可能的。