Počet záznamů: 1

N2O decomposition over Fe-FER: A Mössbauer study of the active sites

  1. 1.
    0364619 - UFCH-W 2012 RIV NL eng J - Článek v odborném periodiku
    Tabor, Edyta - Závěta, K. - Sathu, Naveen Kumar - Vondrová, Alena - Sazama, Petr - Sobalík, Zdeněk
    N2O decomposition over Fe-FER: A Mössbauer study of the active sites.
    Catalysis Today. Roč. 175, č. 1 (2011), s. 238-244 ISSN 0920-5861
    Grant CEP: GA AV ČR KAN100400702; GA ČR GA203/09/1627; GA ČR GP203/08/P593
    Výzkumný záměr: CEZ:AV0Z40400503
    Klíčová slova: iron ferrierites * N2O decomposition * cationic sites
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 3.407, rok: 2011

    Iron ferrierites with low iron content (Fe/Al between 0.018 and 0.072) were used as model catalysts to evaluate the participation of individual iron species, with special interest in the role of iron in β cationic sites, for formation of active sites for N2O decomposition. Despite low iron content, the catalysts with prevailing iron located in β sites of two types exhibited high conversions of N2O and activity increase with increase of iron loading. These results indicate formation of the active iron species already at very low concentrations, while at higher concentration level would part of the iron enter also into less active positions. Semi-quantitative analysis of the TOF values of individual iron centers was done using the recently established Mössbauer parameters of the Fe(II) parameters for individual iron cationic species, i.e. β (β-1 and β-2) and α sites [1].
    Trvalý link: http://hdl.handle.net/11104/0200057