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- W2065119908 abstract "Pt nanoparticles (2.5 ± 0.5 nm) deposited on yttria-stabilized zirconia (YSZ), ceria (CeO2) and samarium doped-ceria (SDC) show a strong metal support interaction (SMSI) resulting in O2 − transfer towards Pt through the triple phase boundary (tpb) and electron transfer from Pt to the ceramic. This charge transfer leads to a remarkable catalytic activity of Pt nanoparticles interfaced with ionically and mixed conductive supports for carbon monoxide and ethylene oxidation in the absence of O2 in the gas feed. It is proposed, that Pt nanoparticle and the conducting ceramic form local micro-galvanic cells, where anodic reaction is VOCs oxidation by O2 − at the tpb and the cathodic reaction is the partial reduction of zirconia or ceria. The complete electrooxidation of 909 ppm of CO and C2H4 by O2 − from the conductive ceramic support was achieved in the temperature range of 120–240 °C depending on the support. The total oxygen fraction consumed from each support per catalytic run was 1.9–2.4 and 16.9–25.9% for oxidation of 909 ppm of CO and C2H4, respectively. The catalytic activity of Pt/solid electrolytes was compared with YSZ, CeO2 and SDC blank supports and also with Pt nanoparticles deposited on non-ionically conductive carbon black (Pt/C) and γ-alumina (Pt/γ-Al2O3) supports, which all showed no catalytic activity in the absence of oxygen in the gas feed." @default.
- W2065119908 created "2016-06-24" @default.
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- W2065119908 date "2013-02-01" @default.
- W2065119908 modified "2023-10-14" @default.
- W2065119908 title "Catalytic electrooxidation of volatile organic compounds by oxygen-ion conducting ceramics in oxygen-free gas environment" @default.
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- W2065119908 doi "https://doi.org/10.1016/j.elecom.2012.11.021" @default.
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