Properties of sodium ions in zeolite materials: FT-IR study of the low temperature adsorption of carbon monoxide

Autor:	Guido Busca, Pilar Salagre, Isabel Salla, Paweł Kozyra, Tania Montanari, Jerzy Datka
Rok vydání:	2006
Předmět:	chemistry.chemical_classification Inorganic chemistry General Chemistry Microporous material Ion chemistry.chemical_compound Adsorption chemistry Materials Chemistry Aluminium oxide Spectroscopy Zeolite Inorganic compound Carbon monoxide
Zdroj:	Journal of Materials Chemistry. 16:995
ISSN:	1364-5501 0959-9428
DOI:	10.1039/b513936h
Popis:	The low temperature adsorption of CO has been investigated on NaX (Si/Al a. r. = 1.3), NaY (Si/Al a. r. = 2.4), NaMOR (Si/Al a. r. = 6.5) and NaFER (Si/Al a. r. = 25) zeolites by FT-IR spectroscopy. For comparison CO adsorption has also been investigated on Na-silica–alumina. Bands assigned to CO C-bonded and O-bonded to Na+ ions have been observed and discussed. A correlation between the position of the band and the siting and coordination state of Na+ ions has been observed for C-bonded species. Some effect of the cavity has been envisaged for O-bonded species. Low frequency bands corresponding to quite stable species have also been found and assigned to carbon monoxide bonded to two cations. This suggests that CO may also probe couples of the nearest Na+ ions, that may act in adsorption.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::17b7076c3b63c707d853643129870fd3 https://doi.org/10.1039/b513936h Zobrazit plný text záznamu