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Role of Pt(0) in bimetallic (Pt,Fe)-FER catalysts in the N2O decomposition
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SYSNO ASEP 0379902 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Role of Pt(0) in bimetallic (Pt,Fe)-FER catalysts in the N2O decomposition Author(s) Tabor, Edyta (UFCH-W) RID, ORCID
Jíša, Kamil (UFCH-W)
Nováková, Jana (UFCH-W) RID
Bastl, Zdeněk (UFCH-W) RID, ORCID
Vondrová, Alena (UFCH-W) RID
Závěta, K. (CZ)
Sobalík, Zdeněk (UFCH-W) RIDSource Title Microporous and Mesoporous Materials. - : Elsevier - ISSN 1387-1811
Roč. 165, JAN 2013 (2013), s. 40-47Number of pages 8 s. Language eng - English Country NL - Netherlands Keywords bimetallic Pt,Fe-FER ; Pt-FER ; Pt(0) clusters Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects GA203/09/1627 GA ČR - Czech Science Foundation (CSF) Institutional support UFCH-W - RVO:61388955 UT WOS 000311070500007 EID SCOPUS 84865344606 DOI 10.1016/j.micromeso.2012.07.035 Annotation Presence of metallic Pt clusters highly enhances catalytic activity of iron ferrierite in N2O decomposition, even at low Pt loading (Pt/Al > 0.003). Platinum (II) cations in ferrierite are inactive; only some low activity appears with pre-reduced samples. The behavior of bimetallic Pt,Fe-ferrierites samples is strongly dependent on the sequence of introduction of platinum and iron ions into the ferrierite. This sequence does not affect cationic state of iron ions, however, it changes the state of platinum: metallic Pt clusters are formed in samples where platinum was introduced as the first component. Formation of Pt(0) clusters has been assigned to reduction of Pt ions by the decomposing acetylacetone in solution used for the ion exchange of iron ions. The presence of Pt(0) in iron ferrierite samples changes the composition of the products of decomposition of the surface NOx species formed during the decomposition of nitrous oxide. It decreases the fraction of nitrogen dioxide and increases that of nitric oxide in the desorbing products. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2014
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