Oxygen-donor and catalytic coatings of metal oxides and metals

Details Oxygen-donor and catalytic coatings of metal oxides and metals Oxygen-donor and catalytic coatings of metal oxides and metals

B - Operations, Transporting

01

J

B01J 37/02 (2006.01) B01D 53/94 (2006.01) B01J 21/06 (2006.01) B01J 23/10 (2006.01) F01N 3/022 (2006.01)

Patent

CA 2614755

A method to fabricate thin, penetrating coatings of metal oxides with oxygen storage capability is disclosed. The application of these coating in diesel exhaust particulate oxidation, carbonization prevention in ethylene cracking pipes etc. is also disclosed. In this method, the use of thin, penetrating coatings of catalytic metals decreases the oxidation temperature of carbon in contact with or near the coated surfaces. Finally, the invention describes a method to prepare a better bonding surface for laying down catalysts through traditional calcification slurry methods, by pre- coating the surface with a thin, penetrating coating of metal oxide.

L'invention concerne un procédé permettant de produire des revêtements d'oxydes métalliques minces et pénétrant à capacité de stockage d'oxygène. L'invention concerne également l'application de ces revêtements pour empêcher l'oxydation et la carbonisation de particules d'échappement de carburant diesel dans des tubes de craquage d'éthylène, etc. Dans ce procédé, l'utilisation de revêtements minces et pénétrants de métaux catalytiques fait baisser la température d'oxydation du carbone en contact direct ou proche avec les surfaces revêtues. L'invention concerne enfin un procédé permettant de préparer une meilleure surface de liaison pour y déposer des catalyseurs au moyen de procédés de boues de calcification classiques par revêtement préalable de la surface à l'aide d'un revêtement mince et pénétrant d'oxyde métallique.

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