Zeolite-sorbate interactions from Raman spectroscopy

Raman spectroscopy has been used as a direct structural probe to study sorbate-framework interactions for water sorption into the zeolite potassium-ZK5. Equilibrium adsorbate-induced deformations of intertetrahedral angles are quantitatively measured and analyzed in terms of a structural isotherm fo...

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Veröffentlicht in:	Journal of physical chemistry (1952) 1990-11, Vol.94 (22), p.8384-8387
Hauptverfasser:	Buckley, R. G, Deckman, H. W, Witzke, H, McHenry, J. A
Format:	Artikel
Sprache:	eng
Schlagworte:	400201 - Chemical & Physicochemical Properties Chemistry DATA Exact sciences and technology EXPERIMENTAL DATA General and physical chemistry HYDROGEN COMPOUNDS INFORMATION INORGANIC ION EXCHANGERS INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ION EXCHANGE MATERIALS KINETICS LASER SPECTROSCOPY MATERIALS MINERALS NUMERICAL DATA OXYGEN COMPOUNDS RAMAN SPECTROSCOPY REACTION KINETICS Solid-gas interface SORPTIVE PROPERTIES SPECTROSCOPY STRUCTURAL CHEMICAL ANALYSIS Surface physical chemistry SURFACE PROPERTIES WATER ZEOLITES
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Beschreibung
Zusammenfassung:	Raman spectroscopy has been used as a direct structural probe to study sorbate-framework interactions for water sorption into the zeolite potassium-ZK5. Equilibrium adsorbate-induced deformations of intertetrahedral angles are quantitatively measured and analyzed in terms of a structural isotherm for each counterion site. All of the structural changes result from the first molecules sorbed. Kinetic studies of the structural deformation are used to determine a diffusion coefficient for the water molecules deforming the six-membered ring site of {approximately} 10{sup {minus}12} cm{sup 2} s{sup {minus}1}.
ISSN:	0022-3654 1541-5740
DOI:	10.1021/j100385a002