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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
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Piumetti, Marco (author), van der Linden, B. (author), Makkee, M. (author), Miceli, Paolo (author), Fino, Debora (author), Russo, Nunzio (author), Bensaid, Samir (author)
Ceria-based catalysts with different topological and textural properties have been prepared to study the role of the soot-catalyst contact on the soot oxidation reaction. The physico-chemical features of the catalysts have been investigated by means of complementary techniques, such as powder XRD, N<sub>2</sub> physisorption at -196 °C,...
journal article 2016
document
Tabish, A.N. (author), Patel, H.C. (author), Purushothaman Vellayani, A. (author)
Fuel flexibility of solid oxide fuel cells enables the use of low cost and practical fuels like syngas. Understanding of the oxidation kinetics with syngas is essential for proper selection of anode material and its design optimization. Using nickel and ceria pattern anodes, we study the electrochemical oxidation of syngas in both dry and wet...
journal article 2017
document
Wang, Y. (author)
Nitrogenoxides (NOx, including NO and NOx) are a group of hazardous, toxic and harmfulgasses, which have an adverse effect on both environment and human health,e.g., acid rain, photochemical smog, and affecting the human respiratorysystem. The NOx concentration in most of the EUcities exceeds the EU annual limit value (40 μg/m3). Around40% of...
doctoral thesis 2017
document
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), 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
document
Tabish, A.N. (author), Patel, H.C. (author), Schoonman, J. (author), Purushothaman Vellayani, A. (author)
Using the Nernst-Planck-Poisson model and a detailed reaction mechanism, we studied the hydrogen electrochemical oxidation on a ceria anode. Resistances caused by surface kinetics, and bulk transport of oxide-ion vacancies and electrons are computed individually to identify the dominant resistive process. The effect of operating conditions...
journal article 2018
document
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
document
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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