Catalytic and Electrical Properties of Electrochemical NOx Reduction System
The catalytic and electrical properties of an electrochemical NOx reduction system were investigated. A power above 3.5W/cm2 reduced more than 60% of NOx to N2 over the (La,Sr)CoO3-α/Ce0.9Gd0.1O1.95/Pt laminated system in a temperature range of 450°C to 650°C. O2- transportation removed the oxygen around the cathode layer through the Ce0.9Gd0.1O1.95 electrolyte layer, then NO was able to decompose to N2 at the cathode. This ceria-based system exhibited stable NOx reduction with respect to electrical power, regardless of operating temperature.
T. Yamaguchi et al., "Catalytic and Electrical Properties of Electrochemical NOx Reduction System", Advances in Science and Technology, Vol. 45, pp. 2039-2042, 2006