Patent ID: 7022646
Filing Date: 2006-04-04
Classification: B01D,B01J,F01N,Y02A

Abstract:
1. A layered catalyst composite for controlling vehicular exhaust emissions comprising: (a) a substrate; (b) at least one bottom layer having a bottom surface and a top surface wherein the bottom surface is adjacent to, and in contact with, the substrate, said bottom layer comprising a support upon which is deposited: (i) a precious metal component which consists of a platinum metal component and (ii) at least one NO (c) at least one top layer having a bottom surface and a top surface wherein the bottom surface is adjacent to, and in contact with, the top surface of the bottom layer, said top layer comprising a support upon which is deposited (i) at least one precious metal which consists of a component selected from platinum and rhodium metal components, and (ii) at least one NO