(19)
(11) EP 1 911 514 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
02.07.2008 Bulletin 2008/27

(43) Date of publication:
16.04.2008 Bulletin 2008/16

(21) Application number: 06766710.5

(22) Date of filing: 14.06.2006
(51) International Patent Classification (IPC): 
B01J 23/58(2006.01)
F01N 3/10(2006.01)
 B01D 53/94(2006.01)
(86) International application number:
PCT/JP2006/311941
(87) International publication number:
WO 2006/134976 (21.12.2006 Gazette 2006/51)
(84) Designated Contracting States:
DE FR GB

(30) Priority: 16.06.2005 JP 2005176500

(71) Applicants:
  • Cataler Corporation
    Shizuoka-ken 437-1492 (JP)
  • TOYOTA JIDOSHA KABUSHIKI KAISHA
    Toyota-shi, Aichi-ken, 471-8571 (JP)

(72) Inventors:
  • MATSUEDA, Satoshi c/o Cataler Corporation
    Kakegawa-shi, Shizuoka-ken (JP)
  • KIMURA, Mareo c/o Cataler Corporation
    Kakegawa-shi, Shizuoka-ken (JP)
  • CHIBA, Akiya c/o Cataler Corporation
    Kakegawa-shi, Shizuoka-ken (JP)
  • NAGASHIMA, Hiroki c/o Cataler Corporation
    Kakegawa-shi, Shizuoka-ken (JP)
  • MIYOSHI, Naoto c/o Toyota Jidosha Kabushiki Kaisha
    Toyota-shi, Aichi-ken 471-8571 (JP)
  • ISHIBASHI, Kazunobu c/o Toyota Jidosha Kabushiki Kaisha
    Toyota-shi, Aichi-ken 471-8571 (JP)
  • KANAZAWA, Takaaki c/o Toyota Jidosha Kabushiki Kaisha
    Toyota-shi, Aichi-ken 471-8571 (JP)

(74) Representative: Fürniss, Peter et al
Winter, Brandl, Fürniss, Hübner, Röss, Kaiser, Polte Partnerschaft Patent- und Rechtsanwaltskanzlei Alois-Steinecker-Strasse 22
85354 Freising
85354 Freising (DE)

   


(54) CATALYST FOR EXHAUST GAS PURIFICATION


(57) An exhaust gas-purifying catalyst (1) contains a rare-earth element, an alkaline-earth element, zirconium and a precious metal, an atomic ratio of the alkaline-earth element with respect to the sum of the rare-earth element and the zirconium is equal to 0.1 atomic% or higher and lower than 10 atomic%, a part of the rare-earth element, a part of the zirconium and at least a part of the alkaline-earth element forming a composite oxide, and the composite oxide and a part of precious metal forming a solid solution.