Patent ID: 7341977

Claim:
A composite comprising a plurality of agglomerated nanocrystalline particles including a porous first material impregnated with a second material, said first material selected from the group consisting of MgO, CeO 2 , AgO, SrO, BaO, CaO, FeO, V 2 O 3 , V 2 O 5 , Mn 2 O 3 , Fe 2 O 3 , NiO, CuO, ZnO, SiO, Ag 2 O, Al 2 O 3 and combinations thereof, and said second material selected from the group consisting of Ag, Hg, Sn, Ga, In, cations thereof, and oxides thereof, said composite retaining at least about 25% of the total pore volume of said first material prior to agglomeration thereof.