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AssigneeJohnson Matthey Public Limited Company
InventorsCecilia BERNADINI, Thomas CAMPBELL, Guy Richard CHANDLER, Christopher Daly, Katharine Ann HARDSTONE, Thomas HOTCHKISS, David THOMPSETT
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A method of coating a substrate with a foam is described. The method comprises: (a) introducing a foam into a substrate comprising a plurality of channels through open ends of the channels at a first end of the substrate; and (b) applying at least one of (i) a vacuum to open ends of the channels at a second end of the substrate and (ii) a pressure to the open ends of the channels at the first end of the substrate; wherein the foam comprises a particulate material, and wherein the foam is particle stabilized.
A method of coating a substrate with a foam, wherein the method comprises:
An emissions control device for treating or removing pollutants from an exhaust gas produced by an internal combustion engine, wherein the emissions control device comprises a solid foam layer disposed on a substrate, and wherein the solid foam layer disposed on a substrate has an open cell structure.
An emissions control device according to 13, wherein the solid foam layer has a median pore diameter of 1-100 μm.
Dependencies are inferred from the claim text.