Patent ID: 6077600
Filing Date: 2000-06-20
Classification: B01D,B01J,F01N,Y02T,Y10S,Y10T

Abstract:
A method of making a high efficiency catalytic converter for removing unburned hydrocarbon pollutants from exhaust gases from an internal combustion engine, the method comprising the steps of:a) forming a catalytic chamber having an inlet connected to receive exhaust gases and an outlet therefrom and further having walls of an insulative and structural fiber reinforced ceramic matrix composite material comprising reinforcing fibers disposed throughout a polymer-derived ceramic resin;b ) disposing a high temperature-resistant, open-celled foam within the catalytic chamber within a path between the inlet and the outlet so that exhaust gases entering the inlet must pass through a cell path of the foam to exit through the outlet; and,c) depositing a catalyst for unburned hydrocarbon pollutants on walls of cells of the foam.