Deuterium solid-state NMR study of the dynamics of molecules sorbed by zeolites

Journal Article · Thu Sep 11 04:00:00 EDT 1986 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100410a044· OSTI ID:5241060

Eckman, R R; Vega, A J

The dynamics of small organic molecules sorbed by zeolite molecular sieves has been investigated by using solid-state deuterium NMR. The systems studied include methanol, benzene, toluene, and p-xylene sorbed by zeolites ZSM-5, mordenite, Y, and erionite. The dynamics of uptake or filling of the zeolite void volume has been observed. Intracrystalline molecular motion has been observed and used to characterize the molecular sieve effect. For example, a preferred diffusion of p-xylene in the straight channels of ZSM-5 has been observed, which tends to support the theory of molecular traffic control. The physical state of physisorbed species is described in the light of the deuterium NMR results. The behavior of sorbed molecules is characterized as that of surface-adsorbed species. The effects of site-selective adsorption and diffusion on the state of sorbed species is described.

• Research Organization: E.I. du Pont de Nemours and Co., Inc., Wilmington, DE
• OSTI ID: 5241060
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 90:19; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

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ALCOHOLS
ALKYLATED AROMATICS
AROMATICS
BENZENE
DATA
DEUTERIUM COMPOUNDS
DYNAMICS
EXPERIMENTAL DATA
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MAGNETIC RESONANCE
MATERIALS
MECHANICS
METHANOL
MINERALS
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
NUMERICAL DATA
ORGANIC COMPOUNDS
RESONANCE
SORPTIVE PROPERTIES
SPECTRA
SURFACE PROPERTIES
TOLUENE
XYLENES
ZEOLITES