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Characterization of iron cationic sites in ferrierite using Mössbauer spectroscopy
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SYSNO ASEP 0360062 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Characterization of iron cationic sites in ferrierite using Mössbauer spectroscopy Tvůrce(i) Tabor, Edyta (UFCH-W) RID, ORCID
Závěta, K. (CZ)
Sathu, Naveen Kumar (UFCH-W)
Tvarůžková, Zdenka (UFCH-W) RID
Sobalík, Zdeněk (UFCH-W) RIDZdroj.dok. Catalysis Today. - : Elsevier - ISSN 0920-5861
Roč. 169, č. 1 (2011), s. 16-23Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova iron ferrierites ; cationic site ; Mössbauer spectroscopy Vědní obor RIV CF - Fyzikální chemie a teoretická chemie CEP KAN100400702 GA AV ČR - Akademie věd GA203/09/1627 GA ČR - Grantová agentura ČR CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000291388000003 DOI 10.1016/j.cattod.2010.09.017 Anotace Iron ferrierites with low iron content and well-defined cation occupation supported by FTIR, UV–vis and EPR analysis, were utilized in order to settle the Mössbauer parameters of individual iron cationic species. These samples thus could serve as standard for establishing parameters for the Mössbauer spectroscopy analysis. In accordance with the analysis and supported by the published DFT modeling iron ions were present in three types of cationic sites (one α and two β). For the first time, experimental evidence supporting the proposed existence of two types of β sites for Fe(II) bonding has been presented. Fe(II) in two types of β sites were characterized by IS = 0.92 mm/s and QS = 0.44 mm/s, and IS = of 0.94 mm/s and QS = 0.70 mm/s. The Mössbauer parameters of the Fe(II) in α sites has been established with IS = 1.02 mm/s and QS = 2.02 mm/s. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2012
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