CATALYST COMPOSITION FOR EXHAUST GAS PURIFICATION AND EXHAUST GAS PURIFYING CATALYST FOR AUTOMOBILES
    3.
    发明申请
    CATALYST COMPOSITION FOR EXHAUST GAS PURIFICATION AND EXHAUST GAS PURIFYING CATALYST FOR AUTOMOBILES 有权
    汽油净化用催化剂组合物及汽车废气净化催化剂

    公开(公告)号:US20150111727A1

    公开(公告)日:2015-04-23

    申请号:US14398515

    申请日:2013-05-28

    发明人: Ken Nagashima

    IPC分类号: B01J23/63

    摘要: The present invention is to provide a catalyst composition for exhaust gas purification, which is superior in purification performance for nitrogen oxides (NOx), carbon monoxide (CO) and hydrocarbons (HC) in exhaust gas to be discharged from an internal combustion engine of a gasoline vehicle or the like; and an catalyst for exhaust gas purification for automobiles. The present invention is a catalyst composition for exhaust gas purification for purifying nitrogen oxides, carbon monoxide, and hydrocarbons in exhaust gas, which includes a catalyst composition wherein rhodium is supported, together with an α-alumina particle, on a zirconia-type base material, characterized in that average particle size of the α-alumina particle is 10 nm to 1 μm, and also is smaller than average particle size of the zirconia (ZrO2)-type base material.

    摘要翻译: 本发明提供一种排气净化用催化剂组合物,其排气中的氮氧化物(NOx),一氧化碳(CO)和碳氢化合物(HC)的净化性能优于从内燃机 汽油车等; 以及用于汽车的废气净化用催化剂。 本发明是一种用于净化废气中的氮氧化物,一氧化碳和烃的废气净化用催化剂组合物,其包含催化剂组合物,其中铑与α-氧化铝颗粒一起被支撑在氧化锆型基材上 其特征在于,所述α-氧化铝粒子的平均粒径为10nm〜1μm,并且还小于所述氧化锆(ZrO 2)型基材的平均粒径。