Patent ID: 8071505

Claim:
A catalyst support body comprising: a longitudinal axis; a corrugated metal foam sheath layer that is spirally wrapped around the longitudinal axis, and that has an inside surface and an outside surface; a first planar metal foam sheath layer that is spirally wrapped around the longitudinal axis and that has an inside surface and an outside surface, wherein the outside surface of the corrugated metal foam sheath layer is coupled to the inside surface of the first planar metal foam sheath layer; a second planar metal foam sheath layer that is spirally wrapped around the longitudinal axis and that has an inside surface and an outside surface, wherein (a) the outside surface of the first planar metal foam sheath layer is coupled to the inside surface of the second planar metal foam sheath layer and (b) the inside surface of the corrugated metal foam sheath layer is coupled to the outside surface of the second planar metal foam sheath layer; and a sleeve housing wherein the first and second planar metal foam sheath layers comprise different materials.