Firing (Calcination) Process and Method Related to Metallic Substrates Coated with ZPGM Catalyst

摘要

The effect of firing (calcination) cycle on metallic substrates in ZPGM catalyst systems is disclosed. ZPGM catalyst samples with washcoat and overcoat are separately fired in a normal, slow and fast firing cycles to determine the optimal firing cycling that may provide an enhanced catalyst performance, as well as the minimal loss of washcoat adhesion from the samples.

主权项

1. A method of controlling a firing cycle for use with catalytics, comprising:
providing at least one substrate; depositing a washcoat suitable for deposition on the substrate, the washcoat comprising at least one oxide solid further comprising at least one carrier metal oxide; calcinating the washcoat through at least one first heating and at least one second heating; depositing an overcoat suitable for deposition on the substrate, the overcoat comprising at least one oxygen storage material and at least one ZPGM catalyst; wherein the at least one ZPGM catalyst comprises at least one spinel structured compound having the formula AB2O4, wherein each of A and B is selected from the group consisting of at least one of copper and cerium; and wherein one of the at least one carrier material oxide is a mixed metal oxide.