Distribution of hexamethylbenzene in a zeolite studied by xenon-129 and multiple-quantum NMR
Journal Article
·
· J. Phys. Chem.; (United States)
The distribution of hexamethylbenzene (HMB) molecules among the cavities of a Na-Y zeolite has been investigated by both xenon-129 and multiple-quantum NMR. For samples prepared at 523 K, xenon NMR shows that HMB molecules are dispersed nonuniformly, entering and remaining in the first available zeolite cavities. After further heat treatment at 573 K, the xenon spectrum collapses to one single line characteristic of a macroscopically uniform molecular distribution; multiple-quantum NMR counting indicates spin cluster of about 16 hydrogens, consistent with one HMB (18 hydrogens) per cavity.
- Research Organization:
- Univ. of California, Berkeley (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 5249554
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 91:27; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
AROMATICS
BENZENE
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DATA
DAYS LIVING RADIOISOTOPES
DISTRIBUTION
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
HIGH TEMPERATURE
HYDROCARBONS
INFORMATION
INORGANIC ION EXCHANGERS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ION EXCHANGE MATERIALS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MAGNETIC RESONANCE
MATERIALS
MINERALS
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
NUCLEI
NUMERICAL DATA
ORGANIC COMPOUNDS
RADIOISOTOPES
RESONANCE
SPATIAL DISTRIBUTION
SPECTRA
STABLE ISOTOPES
XENON 129
XENON ISOTOPES
ZEOLITES
400201* -- Chemical & Physicochemical Properties
AROMATICS
BENZENE
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DATA
DAYS LIVING RADIOISOTOPES
DISTRIBUTION
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
HIGH TEMPERATURE
HYDROCARBONS
INFORMATION
INORGANIC ION EXCHANGERS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ION EXCHANGE MATERIALS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MAGNETIC RESONANCE
MATERIALS
MINERALS
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
NUCLEI
NUMERICAL DATA
ORGANIC COMPOUNDS
RADIOISOTOPES
RESONANCE
SPATIAL DISTRIBUTION
SPECTRA
STABLE ISOTOPES
XENON 129
XENON ISOTOPES
ZEOLITES