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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Bibliographic Details
Published in:Journal of physical chemistry (1952) 1990-11, Vol.94 (22), p.8384-8387
Main Authors: Buckley, R. G, Deckman, H. W, Witzke, H, McHenry, J. A
Format: Article
Language:English
Subjects:
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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Summary: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