Abstract: Disclosed is a methane oxidation catalyst, and methods of use, the catalyst having a support comprising alumina doped with lanthanum and comprising platinum and palladium as the principle active phases. The platinum and palladium are present in the catalyst in a weight ratio of between 0.20:1.0 and 0.75:1.0, at an amount effective 5 for producing a product gas having reduced levels of methane as compared to a source gas prior to catalysis. Selected catalysts disclosed herein exhibit a capacity for sulfur and water resistance.

Abstract: The invention discloses use of a catalyzed particulate filter loaded with a silver-zirconia catalyst prepared by citric acid-assisted sol-gel method for soot removal from engine exhaust. The invention discloses a method of making xAg/ZrO2 where x is 20 mol %, said method comprises: mixing aqueous solutions of AgNO3 and ZrO(NO3)2 hydrate to produce a first mixture, adding an aqueous solution of citric acid to the first mixture, wherein the molar ratio of metal ions to citric acid is about 1:3 to produce a second mixture; heating the second mixture to about 80-90° C. to evaporate excess water in the second mixture to form a viscous gel, charring the viscous gel at about 200° C. for about 12 hours to produce a foam-like material, grounding the foam-like material to form a grounded material, and calcinating the grounded material at 500° C. for about 10 hours.

Abstract: Provided herein is a methane oxidation catalyst having a support comprising alumina doped with lanthanum and comprising platinum and palladium as active phases. The platinum and palladium are present in the catalyst at an amount effective for producing an exhaust stream from a natural gas vehicle having reduced levels of methane. The catalyst disclosed herein may exhibit improvements in sulfur and water resistance.

Abstract: Provided herein is a methane oxidation catalyst having a support comprising alumina doped with lanthanum and comprising platinum and palladium as active phases. The platinum and palladium are present in the catalyst at an amount effective for producing an exhaust stream from a natural gas vehicle having reduced levels of methane. The catalyst disclosed herein may exhibit improvements in sulfur and water resistance.