초록 ▼

A composite catalyst substrate is provided, which may include a metallic core and a porous ceramic coating on the metallic core. The substrate may also include a washcoat substantially covering the ceramic coating and including a catalyst material configured to react with constituents in an exhaust

A composite catalyst substrate is provided, which may include a metallic core and a porous ceramic coating on the metallic core. The substrate may also include a washcoat substantially covering the ceramic coating and including a catalyst material configured to react with constituents in an exhaust flow of an exhaust producing engine. The catalyst material may be dispersed in, or coated on, the washcoat.

대표청구항 ▼

1. A composite catalyst substrate, comprising: a metallic core;a porous ceramic coating on the metallic core; anda washcoat substantially covering the ceramic coating and including a catalyst material configured to react with constituents in an exhaust flow of an exhaust producing engine, the cataly

1. A composite catalyst substrate, comprising: a metallic core;a porous ceramic coating on the metallic core; anda washcoat substantially covering the ceramic coating and including a catalyst material configured to react with constituents in an exhaust flow of an exhaust producing engine, the catalyst material being dispersed in, or coated on, the washcoat. 2. The substrate of claim 1, wherein the catalyst material includes a precious metal. 3. The substrate of claim 1, wherein the ceramic coating includes cordierite. 4. The substrate of claim 1, wherein the metallic core includes stainless steel. 5. The substrate of claim 1, wherein the substrate is formed in a honeycomb configuration. 6. The substrate of claim 1, wherein the washcoat includes alumina. 7. The substrate of claim 1, wherein the ceramic coating includes a catalyst material dispersed therein, or coated thereon. 8. The substrate of claim 1, wherein the washcoat is porous. 9. An exhaust after-treatment system, comprising: a catalyst-based after-treatment component; andan exhaust conduit configured to direct a flow of exhaust gases from an exhaust producing engine to the catalyst-based after-treatment component;wherein the catalyst-based after-treatment component includes: a catalyst substrate having a metallic core;a porous ceramic coating on the metallic core; anda washcoat substantially covering the ceramic coating and including a catalyst material configured to react with constituents in the exhaust flow, the catalyst material being dispersed in, or coated on, the washcoat. 10. The system of claim 9, wherein the catalyst material includes a precious metal. 11. The system of claim 9, wherein the ceramic coating includes cordierite. 12. The system of claim 9, wherein the metallic core includes stainless steel. 13. The system of claim 9, wherein the substrate is formed in a honeycomb configuration. 14. The system of claim 9, wherein the ceramic coating includes a catalyst material dispersed therein, or coated thereon. 15. The system of claim 9, wherein the washcoat is porous. 16. The system of claim 9, wherein the washcoat includes alumina. 17. A method of making a composite catalyst substrate, comprising: applying a coating of porous ceramic material on a metallic core having a honeycomb configuration; andforming a porous washcoat on the ceramic material; andincorporating a catalyst on, or into, the washcoat. 18. The method of claim 17, wherein applying the coating of porous ceramic material on the metallic core includes dipping the metallic core into a slurry of porous ceramic material. 19. The method of claim 17, wherein the catalyst material includes a precious metal. 20. The method of claim 17, wherein the porous ceramic material includes cordierite. 21. The method of claim 17, wherein the metallic core includes stainless steel. 22. The method of claim 17, wherein the washcoat includes alumina. 23. The method of claim 17, further including forming the substrate in a honeycomb configuration.