Study of sorbent/sorbate interactions in some aromatics/silicalite systems by use of nuclear magnetic resonance with cross-polarization
Journal Article
·
· Materials Research Bulletin; (United States)
- CNRS, Villeurbanne (France). Lab. de Chimie Organometallique de Surface
- Univ. Claude-Bernard, Villeurbanne (France). Lab. de Physicochimie Minerale
The solids obtained by loading silicalite (a highly dealuminated siliceous ZSM-5 material) with up to four molecules/uc of aromatics (benzene, p-xylene, p-dichlorobenzene, naphthalene) were studied by [sup 29]Si HP-MAS and CP-MAS NMR. Cross-polarization (CP) gives information on the possible locations and orientations of the sorbate molecules in the active sites of the zeolite. In agreement with structural investigations (X-ray and neutron powder diffraction), it is shown that all four sorbate molecules are located at the channel-intersections (site I): p-xylene, p-dichlorbenzene and naphthalene present the same orientation, whereas benzene presents several orientations.
- OSTI ID:
- 6954618
- Journal Information:
- Materials Research Bulletin; (United States), Journal Name: Materials Research Bulletin; (United States) Vol. 29:10; ISSN MRBUAC; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADSORPTION
ALKYLATED AROMATICS
AROMATICS
BENZENE
CATALYSTS
CHLORINATED ALIPHATIC HYDROCARBONS
CONDENSED AROMATICS
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MAGNETIC RESONANCE
MATERIALS
MINERALS
MORPHOLOGY
NAPHTHALENE
NUCLEAR MAGNETIC RESONANCE
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
RESONANCE
SILICATE MINERALS
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
XYLENE-PARA
XYLENES
ZEOLITES
400201* -- Chemical & Physicochemical Properties
ADSORPTION
ALKYLATED AROMATICS
AROMATICS
BENZENE
CATALYSTS
CHLORINATED ALIPHATIC HYDROCARBONS
CONDENSED AROMATICS
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MAGNETIC RESONANCE
MATERIALS
MINERALS
MORPHOLOGY
NAPHTHALENE
NUCLEAR MAGNETIC RESONANCE
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
RESONANCE
SILICATE MINERALS
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
XYLENE-PARA
XYLENES
ZEOLITES