Spin States of Iron-Nitrosyl Adsorption Complexes Formed in Fe-ZSM5 Zeolites

Autor:	S. E. Malykhin, Georgii M. Zhidomirov, Alexander M. Volodin
Rok vydání:	2008
Předmět:	Solid-state physics Spin states Chemistry Iron nitrosyl Atomic and Molecular Physics and Optics Spectral line law.invention Catalysis Adsorption law Computational chemistry Physical chemistry Molecule Electron paramagnetic resonance
Zdroj:	Applied Magnetic Resonance. 33:153-166
ISSN:	1613-7507 0937-9347
DOI:	10.1007/s00723-008-0055-2
Popis:	The capability of extra-framework monoiron sites to adsorb up to three NO molecules has been proven by quantum chemical calculations. Spin states of iron-nitrosyl adsorption complexes formed in Fe-ZSM5 zeolites have been found. For an initial iron site with S = 2, successive adsorption of one, two and three NO molecules changes S to 3/2, 1 and 1/2, respectively. Thus, the electron paramagnetic resonance (EPR) S = 1/2 signal observed after NO adsorption on the Fe-ZSM5 catalyst may be assigned to the Fe2+(NO)3 species. Some peculiarities of the S = 1/2 EPR spectra obtained for iron-nitrosyl species in zeolites are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4b96058f2ea9f9193d5dbfc9817fd81c https://doi.org/10.1007/s00723-008-0055-2 Zobrazit plný text záznamu Full text from SpringerLink