利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

4 条记录 (耗时 0.017 秒)

    Co-catalyst for purifying exhaust gas
    1.
    发明授权
    Co-catalyst for purifying exhaust gas 失效
    用于净化废气的助催化剂

    公开(公告)号：US06831036B1

    公开(公告)日：2004-12-14

    申请号：US09831450

    申请日：2001-05-10

    申请人： Masatoshi Yamazaki ,  Yuichi Anno ,  Kiyoshi Shinoda ,  Isamu Yashima

    发明人： Masatoshi Yamazaki ,  Yuichi Anno ,  Kiyoshi Shinoda ,  Isamu Yashima

    IPC分类号： B01J2342

    CPC分类号： B01J23/63 ,  B01D53/945 ,  B01J23/002 ,  B01J23/10 ,  B01J35/1014 ,  B01J2523/00 ,  F01N2330/08 ,  Y02A50/2324 ,  Y02T10/22 ,  B01J2523/31 ,  B01J2523/3712 ,  B01J2523/3725 ,  B01J2523/36 ,  B01J2523/48 ,  B01J2523/3718 ,  B01J2523/3706

    摘要： A co-catalyst for purifying an exhaust gas which can be used for a loner period of time as an actual catalyst by using the cerium oxide in the conventional co-catalyst for purifying the exhaust gas as a cerium-containing complex oxide for elevating the resistance to heat and suppressing the performance reduction due to thermal deterioration and by making a specific surface area and an oxygen storage capacity over specified values. A co-catalyst for purifying an exhaust gas of the present invention includes a composite oxide including (a) cerium; and (b) at least one element selected from the group consisting of zirconium, yttrium, strontium, barium and a rare-earth element supported on a particulate aluminum oxide support; a specific surface area of the co-catalyst after sintering being not less than 40 m2/g; an oxygen storage capacity at 400° C. being not less than 10 &mgr;mols/g and an oxygen storage capacity at 700° C. being not less than 100 &mgr;mols/g.

    摘要翻译： 一种用于纯化可以作为实际催化剂的废气的助催化剂，其通过在用于净化排气的常规助催化剂中的氧化铈作为用于提高电阻的铈复合氧化物 加热并抑制由于热劣化引起的性能下降，并使比表面积和储氧容量超过规定值。 本发明的排气净化助催化剂包括：（a）铈的复合氧化物; 和（b）选自负载在颗粒氧化铝载体上的锆，钇，锶，钡和稀土元素中的至少一种元素; 烧结后的助催化剂的比表面积为40m 2 / g以上; 在400℃下的储氧能力不低于10molsol / g，在700℃下的储氧能力不低于100molsol / g。

    PARTICULATE COMBUSTION CATALYST, PARTICULATE FILTER, AND EXHAUST GAS CLEAN-UP SYSTEM
    3.
    发明申请
    PARTICULATE COMBUSTION CATALYST, PARTICULATE FILTER, AND EXHAUST GAS CLEAN-UP SYSTEM 审中-公开
    颗粒燃烧催化剂，颗粒过滤器和排气清洁系统

    公开(公告)号：US20090232714A1

    公开(公告)日：2009-09-17

    申请号：US12089408

    申请日：2006-10-05

    申请人： Akira Abe ,  Yuichi Anno

    发明人： Akira Abe ,  Yuichi Anno

    IPC分类号： B01J23/10 ,  B01J21/08 ,  B01D53/86

    CPC分类号： B01D53/944 ,  B01D39/12 ,  B01D2239/0478 ,  B01D2239/083 ,  B01D2255/10 ,  B01D2255/2022 ,  B01D2255/407 ,  B01J23/002 ,  B01J23/63 ,  B01J23/66 ,  B01J23/894 ,  B01J35/04 ,  B01J2523/24 ,  B01J2523/25 ,  B01J2523/3706 ,  B01J2523/3712 ,  B01J2523/3725 ,  B01J2523/43 ,  B01J2523/48 ,  B01J2523/842

    摘要： A particulate combustion catalyst which includes a carrier containing a cerium-zirconium double oxide having a cerium oxide content of 5 to 50 mass %, or a carrier containing a cerium-zirconium-based double oxide containing an oxide of at least one metal selected from Nd, La, Fe, Y, Pr, Ba, Ca, Mg, Sn, and Sr in an amount of 1 to 35 mass %, and having a cerium oxide content of 5 to 50 mass %; and at least one metal selected from Ag, Ru, and K, or an oxide thereof supported on the carrier, and at least one metal selected from among Pt, Pd, and Rh supported on the carrier in an amount of 0.01 to 2 mass %. A particulate filter and an exhaust gas cleanup system having the catalyst are also disclosed. Employment of the particulate combustion catalyst realizes removal of soot through oxidation at low temperature without employment of an expensive noble metal. Since oxidation reaction proceeds with the aid of only oxygen, soot can be removed through oxidation at low temperature regardless of the NOx concentration of exhaust gas. Addition of a small amount of a noble metal can enhance effective removal of SOFs through oxidation while ensuring soot combustion.

    摘要翻译： 一种颗粒燃烧催化剂，其包含含有氧化铈含量为5〜50质量％的铈锆双氧化物的载体，或含有选自Nd的至少一种金属的氧化物的铈锆双氧化物的载体 ，La，Fe，Y，Pr，Ba，Ca，Mg，Sn和Sr的含量为1〜35质量％，氧化铈含量为5〜50质量％ 和选自Ag，Ru和K中的至少一种金属或其负载在载体上的氧化物，以及负载在载体上的Pt，Pd和Rh中的至少一种金属，其量为0.01〜2质量％ 。 还公开了一种具有催化剂的颗粒过滤器和废气净化系统。 颗粒燃烧催化剂的使用实现了在低温下氧化除去烟灰，而不使用昂贵的贵金属。 由于氧化反应仅借助氧气进行，所以烟灰可以通过低温下的氧化除去，而与排气的NOx浓度无关。 添加少量贵金属可以通过氧化有效去除SOF，同时确保烟灰燃烧。