NOx adsorbents
    3.
    发明授权
    NOx adsorbents 失效
    NOx吸附剂

    公开(公告)号:US5840649A

    公开(公告)日:1998-11-24

    申请号:US588882

    申请日:1996-01-19

    摘要: The present invention relates to a Mn-added titania carrier obtained by adding a Mn salt to amorphous titania and baking the titania. The invention also relates to an NOx adsorbent comprising the above-mentioned titania carrier and adsorbing components comprising oxides of Ru and/or Ce supported on the carrier. The invention also relates to an NOx adsorbent comprising the above-mentioned titania carrier and adsorbing components comprising oxides of Ru and/or Ce and an oxide of at least one metal among Ag, Cu and Mn supported on the carrier. The NOx adsorbents embodying the invention are effectively used for efficiently adsorbing and removing NOx from gases which contain much moisture and low-concentration, for example, a few ppm NOx such as gases discharged by ventilation from highway tunnels.

    摘要翻译: 本发明涉及通过向无定形二氧化钛中加入Mn盐并烘烤二氧化钛而获得的添加Mn的二氧化钛载体。 本发明还涉及包含上述二氧化钛载体的NOx吸附剂和包含负载在载体上的Ru和/或Ce的氧化物的吸附组分。 本发明还涉及包含上述二氧化钛载体的NOx吸附剂和包含Ru和/或Ce的氧化物的吸附组分和在载体上负载的Ag,Cu和Mn中的至少一种金属的氧化物。 实施本发明的NOx吸附剂有效地用于有效吸附和除去含有大量水分和低浓度的气体中的NOx,例如少量的NOx,例如通过公路隧道排放的气体。