Probing zeolite internal structures using very low temperature {sup 129}Xe NMR

Technical Report · Sat Aug 01 00:00:00 EDT 1998

DOI:https://doi.org/10.2172/638210· OSTI ID:638210

Labouriau, A; Crawford, S N; Earl, W L ^[1]; Pietrass, T ^[2]; Weber, W A; Panjabi, G; Gates, B C ^[3]

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1. Los Alamos National Lab., NM (United States). Chemical Science and Technology Div.
2. New Mexico Inst. of Mining and Technology, Socorro, NM (United States). Dept. of Chemistry
3. Univ. of California, Davis, CA (United States). Dept. of Chemical Engineering and Materials Science

In recent years, probing pore structure with {sup 129}Xe NMR has received a bad reputation. This is due to the fact that the method is more complex than was originally suggested so the data is somewhat difficult to interpret. The authors find that the use of a wide temperature range (40--350 K) allows them to interpret {sup 129}Xe chemical shifts in terms of van der Waals attraction between the xenon atom and oxygen in zeolite walls. Using rather simple models from the literature, they can extract useful pore size information as well as the van der Waals potential energy.

• Research Organization: Los Alamos National Lab., Chemical Science and Technology Div., NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 638210
• Report Number(s): LA-UR--98-643; CONF-980734--; ON: DE98003703
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
CHEMICAL SHIFT
EXPERIMENTAL DATA
NUCLEAR MAGNETIC RESONANCE
PORE STRUCTURE
XENON 129
ZEOLITES