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Wang, Y. (author), Makkee, M. (author)Oxygen defects in reduced ceria are the catalytic sites for the NO reduction into N<sub>2</sub> in the Toyota Di-Air DeNO<sub>x</sub> abatement technology. Traces of NO (several hundred ppm) have to compete with the excess amount of other oxidants, e.g., 5% CO<sub>2</sub> and 5% O<sub>2</sub>, in an exhaust gas of a lean burn (diesel) engine....journal article 2018