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Characterization of iron cationic sites in ferrierite using Mössbauer spectroscopy
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SYSNO ASEP 0360062 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Characterization of iron cationic sites in ferrierite using Mössbauer spectroscopy Author(s) Tabor, Edyta (UFCH-W) RID, ORCID
Závěta, K. (CZ)
Sathu, Naveen Kumar (UFCH-W)
Tvarůžková, Zdenka (UFCH-W) RID
Sobalík, Zdeněk (UFCH-W) RIDSource Title Catalysis Today. - : Elsevier - ISSN 0920-5861
Roč. 169, č. 1 (2011), s. 16-23Number of pages 8 s. Language eng - English Country NL - Netherlands Keywords iron ferrierites ; cationic site ; Mössbauer spectroscopy Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects KAN100400702 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) GA203/09/1627 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000291388000003 DOI 10.1016/j.cattod.2010.09.017 Annotation 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. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2012
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