Electrochemical Removal of NO and CH4 from Oxidizing Atmosphere

An electrochemical cell, Pd | YSZ | Pd, was constructed to remove both NO and CH4 from an oxidizing atmosphere. When the direct current was supplied to the cell at 700 °C in the reactant flow containing 1000 ppm NO, 1000 ppm CH4 and an excess amount of O2, NO was reduced to N2 at the cathode, and CH4 was oxidized to COx at the anode.