Investigation of the hydration of zeolite NaA by two-dimensional /sup 23/Na nutation NMR
A two-dimensional nutation NMR experiment is used to observe the change of quadrupole parameters of sodium ions in zeolite NaA when the zeolite is loaded in steps with water. The authors can detect two sodium sites in the dry zeolite, at respectively 6-rings and 8-rings, and can follow the water absorption at these sites. When the amount of absorbed water is increased in steps, first the quadrupole interaction of sodium at the 6-rings decreases; with more absorbed water the quadrupole interaction of the sodium ions at the 8-rings becomes small. Relaxation effects in the rotating frame, studied by combining rotary echoes with nutation NMR, indicate a mobility of sodium ions or water molecules.
- Research Organization:
- Univ. of Nijmegen, Netherlands
- OSTI ID:
- 5675149
- Journal Information:
- J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 109:24; ISSN JACSA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Cesium-133 NMR studies of cation siting and site exchange dynamics in hydrated Cs-Na-A zeolite
/sup 6/Li as a probe for the study of the NMR (nuclear magnetic resonance) of lithium ions in dehydrated and partially dehydrated zeolite A
Related Subjects
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
ALKALI METAL ISOTOPES
DATA
EXPERIMENTAL DATA
HYDRATION
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
MATERIALS
MINERALS
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
OXYGEN COMPOUNDS
RESONANCE
SODIUM 23
SODIUM COMPOUNDS
SODIUM ISOTOPES
SOLVATION
SPECTRA
STABLE ISOTOPES
WATER
ZEOLITES