TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The method-I further comprises: providing a third gas; and the repeatedly moving is carried out by moving successive parts of the catalyst body into communication with the first gas, second gas and then the third gas; and supplying the first gas after passage through the catalyst body to the anode section of a proton exchange membrane fuel cell. The repeatedly moving is carried out such that successive parts of the catalyst body are simultaneously in communication with the first, second and third gases. The parts of the catalyst body in communication with the first second and third gases are sealed from each other so as to inhibit mixing of the first, second and third gases. The catalyst body is formed from ceramic corderite structure having pores and coated with the catalyst. The temperature of the first gas is approximately 100 degrees C, the temperature of the second gas is approximately 150-200 degrees C and the temperature of the third gas is approximately 100 degrees C. The method of making a catalyst body further comprises applying a wetting agent to the ceramic corderite structure prior to applying the solution to the ceramic corderite structure. Preferred Components: The first gas is a hydrogen containing gas and the component is carbon monoxide, the second gas is an oxidant gas, and the third gas is a cooling gas. The catalyst is M-OMS-2. The M-OMS-2 catalyst is one of copper-OMS-2, cobalt-OMS-2 and silver-OMS-2. The ceramic corderite structure is elongated between first and second ends and the pores extend between the first and second ends. The ceramic corderite structure includes approximately 300-500 pores per square inch. The catalyst body includes a part, each of the parts being adapted to pass a gas through it, and the catalyst body is adapted to repeatedly move successive parts into communication with at least a first gas and a second gas. The parts are sealed from each other so as to inhibit mixing of the at least first and second gases. The solution includes one or more of a wetting agent and an inking agent. The wetting agent is Teflon (RTM: Polytetrafluoroethylene) and the inking agent is Poloxy WSR-301 (RTM: Inking agent). The wetting agent is deionized water. The coating contains approximately 4 wt.% of binder. The catalyst facilitates oxidation of carbon monoxide; and the capacity of the catalyst is approximately 0.125 wt.% of carbon monoxide per gram of catalyst.