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    • 8. 发明专利
    • Catalyst composition
    • 催化剂组合物
    • JP2007326001A
    • 2007-12-20
    • JP2006157739
    • 2006-06-06
    • Cataler CorpDaihatsu Motor Co Ltdダイハツ工業株式会社株式会社キャタラー
    • TANAKA HIROHISATAN ISAOUENISHI MARITANIGUCHI MASASHIKIMURA MAREOMATSUEDA SATOSHIHIRAI AKIMASANARITA KEIICHI
    • B01J35/02B01D53/94B01J23/89
    • PROBLEM TO BE SOLVED: To provide a catalyst composition capable of maintaining a high-level catalytic activity of a noble metal for a long period of time and realizing an excellent catalytic activity even in the case of containing an oxygen absorbing and desorbing material. SOLUTION: In the catalyst composition provided with a plurality of layers successively stacked from the inner side toward the outer side and in which the plurality of layers contain at least one layer containing the oxygen absorbing and desorbing material having the oxygen absorbing and desorbing capacity, a smaller quantity of the oxygen absorbing and desorbing material than that of the oxygen absorbing and desorbing material one reference layer contains is contained or the oxygen absorbing and desorbing material is not contained in the outer side layer adjacent to the one reference layer selected from the layers containing the oxygen absorbing and desorbing material. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供能够长期保持贵金属的高水平催化活性并且即使在含有氧吸收和解吸材料的情况下也能实现优异的催化活性的催化剂组合物 。 解决方案:在具有从内侧朝向外侧依次层叠的多个层的催化剂组合物中,多层包含至少一层含有吸氧解吸材料的层,该氧吸收和解吸材料具有氧吸收和解吸附 含有氧吸收和解吸材料的氧吸收和解吸材料的量比一个参考层所含的氧吸收和解吸材料的量少,或者氧吸收和解吸材料不包含在与选自以下的一个参考层相邻的外侧层中 这些层含有氧吸收和解吸材料。 版权所有(C)2008,JPO&INPIT