EP 1771383 A2 20070411 - ZIRCONIA CORE PARTICLES COATED WITH CERIA PARTICLES, PRODUCTION PROCESS THEREOF AND EXHAUST GAS PURIFYING CATALYST
Title (en)
ZIRCONIA CORE PARTICLES COATED WITH CERIA PARTICLES, PRODUCTION PROCESS THEREOF AND EXHAUST GAS PURIFYING CATALYST
Title (de)
MIT CERTEILCHEN BESCHICHTETE ZIRCONIUMOXIDKERNTEILCHEN, HERSTELLUNGSVERFAHREN DAFÜR UND ABGASREINIGUNGSKATALYSATOR
Title (fr)
PARTICULE D"OXYDE MÉTALLIQUE, PROCESSUS DE PRODUCTION DE CELLE-CI ET CATALYSEUR DE PURIFICATION DES GAZ D"ÉVACUATION
Publication
Application
Priority
- JP 2005008464 W 20050427
- JP 2004131619 A 20040427
Abstract (en)
[origin: WO2005102933A2] The present invention provides a metal oxide particle for a catalyst support comprising multiple species of metal oxides and capable of satisfactorily exerting the properties of the respective metal oxides, and also provide a production process therefor and an exhaust gas purifying catalyst obtained from this metal oxide particle. A metal oxide particle of the present invention comprises a core part 1 relatively rich in a first metal oxide and a surface layer 2 relatively rich in a second metal oxide, the core part and the surface layer each comprising a plurality of primary particles (1a, 2a), and the primary particle diameter of the second metal oxide being smaller than the primary particle diameter of the first metal oxide.
IPC 8 full level
C01G 25/00 (2006.01); F01N 3/10 (2006.01); B01D 53/94 (2006.01); B01J 23/10 (2006.01); B01J 23/58 (2006.01); B01J 23/63 (2006.01); B01J 35/00 (2006.01); B01J 37/03 (2006.01); C01G 1/02 (2006.01)
CPC (source: EP)
B01D 53/945 (2013.01); B01J 23/10 (2013.01); B01J 23/63 (2013.01); B01J 35/23 (2024.01); B82Y 30/00 (2013.01); C01G 1/02 (2013.01); C01G 25/00 (2013.01); B01D 2255/407 (2013.01); B01D 2255/9202 (2013.01); B01D 2255/9207 (2013.01); C01P 2004/64 (2013.01); Y02T 10/12 (2013.01)
Citation (search report)
See references of WO 2005102933A2
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 2005102933 A2 20051103; WO 2005102933 A3 20060112; CN 1972871 A 20070530; EP 1771383 A2 20070411; JP 2005313029 A 20051110; JP 4165442 B2 20081015
DOCDB simple family (application)
JP 2005008464 W 20050427; CN 200580013428 A 20050427; EP 05739092 A 20050427; JP 2004131619 A 20040427