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Wang, Y. (author), Makkee, M. (author)Toyota's Di-Air DeNO<sub>x</sub> system is a promising DeNO<sub>x</sub> system to meet NO<sub>x</sub> emission requirement during the real driving, yet, a fundamental understanding largely lacks, e.g. the benefit of fast frequency fuel injection. Ceria is the main ingredient in Di-Air catalyst composition. Hence, we investigated the reduction...journal article 2018