Methane Oxidation Catalysts?
I've been helping to come up with a small engine that runs on methane extracted from compost. One issue that I've run into is the fact that completely utilizing the gas isn't very easy, and some can escape the exhaust. I've heard of catalysts that help to completely burn the stuff, but I'm completely unsure of how to get them for such a small project, what price they'd be, or how to make them. Does anybody have any tips?