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Wang, Y. (author), Makkee, M. (author)The influence of potassium in Rh on a lanthium promoted zirconia stablised ceria (CZ) catalysts was studied toward NO<sub>x</sub>reduction reactivity and selectivity. The results are compared with a Rh/CZ catalyst. The samples were characterised by N<sub>2</sub> adsorption, XRD, SEM, ICP, and H<sub>2</sub>-TPR. The study highlighted the...journal article 2019
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Wang, Y. (author), Kapteijn, F. (author), Makkee, M. (author)In this study, the role of the noble metals Pt and Rh (0.5 wt.%) for the selective reduction of NO into N<sub>2</sub> is evaluated by the transient TAP technique and in-situ spectroscopy using a commercial stable ceria support (denoted as CZ) and applying isotopically labelled <sup>15</sup>NO and <sup>18</sup>O<sub>2</sub>. The transient...journal article 2018
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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
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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
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Wang, Y. (author), Posthuma De Boer, J (author), Kapteijn, F. (author), Makkee, M. (author)Temporal analysis of product (TAP) is used to investigate the effectiveness of CO, C<sub>3</sub>H<sub>6</sub>, and C<sub>3</sub>H<sub>8</sub> in the reduction of a La–Zr doped ceria catalyst and NO reduction into N<sub>2</sub> over this pre-reduced catalyst. Hydrocarbons are found to be substantially more effective in the reduction of this...journal article 2016