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Minimizing Washcoat Adhesion Loss of Zero-PGM Catalyst Coated on Metallic Substrate

  • US 20150018204A1
  • Filed: 07/12/2013
  • Published: 01/15/2015
  • Est. Priority Date: 07/12/2013
  • Status: Abandoned Application
First Claim
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1. A catalytic system, comprising:

  • at least one substrate;

    a washcoat suitable for deposition on the substrate, the washcoat comprising at least one oxide solid further comprising at least one carrier metal oxide;

    an overcoat suitable for deposition on the substrate, the overcoat comprising at least one ZPGM catalyst;

    wherein adhesion of the washcoat is affected by one selected from the group consisting of the pH of the overcoat, at least one binder in the overcoat, ab average particle size of the overcoat, rheology of the overcoat, and combinations thereof.

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