Determination of the Al-H and H-H internuclear distances in ZSM-5 using NMR spectroscopy
Journal Article
·
· Journal of Physical Chemistry; (United States)
- Lawrence Berkeley Lab., CA (United States) Univ. of California, Berkeley, CA (United States)
NMR spectroscopic techniques are used to determine the structure of Bronsted acid sites in zeolite ZSM-5. The internuclear distance between aluminum and proton nuclei associated with Bronsted acid sites is measured directly using spin echo double resonance (SEDOR) techniques. This distance is determined to be 0.243 [+-] 0.003 nm, consistent with the value of 0.246 nm determined by applying the method of moments to the [sup 1]H spectrum of ZSM-5. The method of moments is applied to the [sup 1]H spectrum of silicalite, and the internuclear distance between protons associated with an internal silanol pair is measured as 0.26 nm. 8 refs., 2 figs.
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 5149508
- Journal Information:
- Journal of Physical Chemistry; (United States), Journal Name: Journal of Physical Chemistry; (United States) Vol. 98:3; ISSN JPCHAX; ISSN 0022-3654
- Country of Publication:
- United States
- Language:
- English
Similar Records
Adsorption studies on Cu-ZSM-5: Characterization of the unique properties of ion-exchanged Cu
Infrared diffuse reflectance study of the silicon-rich H-ZSM-5 catalysis of ethanol conversion
Study of conversion of hexane on zeolite H-ZSM-5 with the aid of diffuse reflection spectrophotometry
Journal Article
·
Sun Aug 01 00:00:00 EDT 1993
· Journal of Catalysis; (United States)
·
OSTI ID:5517250
Infrared diffuse reflectance study of the silicon-rich H-ZSM-5 catalysis of ethanol conversion
Journal Article
·
Tue Jan 31 23:00:00 EST 1989
· Journal of Catalysis; (USA)
·
OSTI ID:7127212
Study of conversion of hexane on zeolite H-ZSM-5 with the aid of diffuse reflection spectrophotometry
Journal Article
·
Sun Sep 01 00:00:00 EDT 1985
· J. Appl. Chem. USSR (Engl. Transl.); (United States)
·
OSTI ID:6968133
Related Subjects
36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MAGNETIC RESONANCE
MATERIALS
MATHEMATICAL MODELS
MINERALS
NUCLEAR MAGNETIC RESONANCE
RESONANCE
SCATTERING
SILICATE MINERALS
SPIN ECHO
X-RAY DIFFRACTION
ZEOLITES
360602* -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MAGNETIC RESONANCE
MATERIALS
MATHEMATICAL MODELS
MINERALS
NUCLEAR MAGNETIC RESONANCE
RESONANCE
SCATTERING
SILICATE MINERALS
SPIN ECHO
X-RAY DIFFRACTION
ZEOLITES