B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 37/02 (2006.01) B01J 21/04 (2006.01) B01J 23/10 (2006.01) B01J 23/14 (2006.01) B01J 23/16 (2006.01) B01J 23/56 (2006.01) B01J 23/83 (2006.01) B01J 23/89 (2006.01) C23C 4/04 (2006.01) C23C 4/06 (2006.01) C23C 4/10 (2006.01)
Patent
CA 2454780
A substrate (5) having a catalytic surface (4) having a coating (11) of metal oxide and noble metal particles (1a and 1b) in the nominal diameter size distribution range of less than three microns, preferably less than one micron is produced by thermal spraying a mixture of large size particles (1a and 1b) (greater than 10 microns in nominal size distribution range) of hydroxides, carbonates or nitrates of the metals: cerium, aluminium, tin, manganese, copper, cobalt, nickel, praseodymium or terbium particles; and hydroxides, carbonates or nitrates of the nobles metals: ruthenium, rhodium, palladium, silver, iridium, platinum and gold onto the substrate (5). The coating (11) adheres to the surface (4) and provides desirable catalyst properties.
L'invention concerne un substrat (5) doté d'une surface catalytique (11) d'oxyde métallique et de particules de métaux nobles (1a et 1b) présentant une distribution granulométrique nominale inférieure à 3 microns, de préférence inférieure à 1 micron. A cet effet, on réalise une pulvérisation thermique, sur ledit substrat, d'un mélange de particules de grande dimension (1a et 1b) (distribution granulométrique nominale supérieure à 10 microns) d'hydroxydes, de carbonates ou de nitrates de métaux tels que le cérium, l'aluminium, l'étain, le manganèse, le cuivre, le cobalt, le nickel, le praséodyme ou le terbium, et d'hydroxydes, de carbonates ou de nitrates de métaux nobles tels que le ruthénium, le rhodium, le palladium, l'argent, l'iridium, le platine et l'or. Le revêtement (11) résultant adhère à la surface (4) et présente des propriétés catalytiques souhaitables.
He Ting
Honda Giken Kogyo Kabushiki Kaisha
Perley-Robertson Hill & Mcdougall Llp
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