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Title: Characterization of guest molecules adsorbed on zeolites of known structure. Part III - Localization of the p-XYLI and p-XYLII species sorbed in a high coverage B. ZSM-5/p-XYLENE complex

Abstract

By combining full profile X-ray powder diffraction structure refinements, extraction of the integrated intensities and difference-Fourier synthesis, it has been possible to characterize and localize the two XYL I and XYL II species of p-xylene organic guest molecules adsorbed in a high coverage B.ZSM-5/p-xylene complex. The investigations have been performed on the calcined H/sub 1.40/AI/sub 0.02/B/sub 1.38/Si/sub 94.60/O/sub 192/ boralite phase which has been saturated with liquid p-xylene at room temperature. Interpretation of a difference-Fourier map reveals the presence of fixed sites at the channel intersections and in the sinusoidal channels. These sites correspond respectively to the XYL I and XYL II species. Most suprisingly, the distribution of these two species in the zeolitic framework corresponds to relatively high xylene/xylene or xylene/framework interactions in the high-coverage B.ZSM-5/nXYL complex (n up to approx. =8 p-xylene molecules/unit-cell).

Authors:
;
Publication Date:
Research Org.:
Laboratoire de Physico-Chimie Minerale IA, UA 116 du CNRS, Universite Claude-Bernard, LYON I 43, Bd du 11 Novembre 1918, F-69622 Villeurbanne Cedex (FR)
OSTI Identifier:
7007988
Resource Type:
Journal Article
Journal Name:
Mater. Res. Bull.; (United States)
Additional Journal Information:
Journal Volume: 23:2
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; MOLECULES; ADSORPTION; XYLENES; PHASE TRANSFORMATIONS; ZEOLITES; X-RAY DIFFRACTION; ALUMINIUM; BORON; FOURIER TRANSFORMATION; HYDROGEN; INTERACTIONS; MOLECULAR STRUCTURE; SILICON; ALKYLATED AROMATICS; AROMATICS; COHERENT SCATTERING; DIFFRACTION; ELEMENTS; HYDROCARBONS; INORGANIC ION EXCHANGERS; INTEGRAL TRANSFORMATIONS; ION EXCHANGE MATERIALS; MATERIALS; METALS; MINERALS; NONMETALS; ORGANIC COMPOUNDS; SCATTERING; SEMIMETALS; SORPTION; TRANSFORMATIONS; 360602* - Other Materials- Structure & Phase Studies; 400101 - Activation, Nuclear Reaction, Radiometric & Radiochemical Procedures; 400201 - Chemical & Physicochemical Properties

Citation Formats

Mentzen, B F, and Bosselet, F. Characterization of guest molecules adsorbed on zeolites of known structure. Part III - Localization of the p-XYLI and p-XYLII species sorbed in a high coverage B. ZSM-5/p-XYLENE complex. United States: N. p., 1988. Web. doi:10.1016/0025-5408(88)90099-2.
Mentzen, B F, & Bosselet, F. Characterization of guest molecules adsorbed on zeolites of known structure. Part III - Localization of the p-XYLI and p-XYLII species sorbed in a high coverage B. ZSM-5/p-XYLENE complex. United States. https://doi.org/10.1016/0025-5408(88)90099-2
Mentzen, B F, and Bosselet, F. 1988. "Characterization of guest molecules adsorbed on zeolites of known structure. Part III - Localization of the p-XYLI and p-XYLII species sorbed in a high coverage B. ZSM-5/p-XYLENE complex". United States. https://doi.org/10.1016/0025-5408(88)90099-2.
@article{osti_7007988,
title = {Characterization of guest molecules adsorbed on zeolites of known structure. Part III - Localization of the p-XYLI and p-XYLII species sorbed in a high coverage B. ZSM-5/p-XYLENE complex},
author = {Mentzen, B F and Bosselet, F},
abstractNote = {By combining full profile X-ray powder diffraction structure refinements, extraction of the integrated intensities and difference-Fourier synthesis, it has been possible to characterize and localize the two XYL I and XYL II species of p-xylene organic guest molecules adsorbed in a high coverage B.ZSM-5/p-xylene complex. The investigations have been performed on the calcined H/sub 1.40/AI/sub 0.02/B/sub 1.38/Si/sub 94.60/O/sub 192/ boralite phase which has been saturated with liquid p-xylene at room temperature. Interpretation of a difference-Fourier map reveals the presence of fixed sites at the channel intersections and in the sinusoidal channels. These sites correspond respectively to the XYL I and XYL II species. Most suprisingly, the distribution of these two species in the zeolitic framework corresponds to relatively high xylene/xylene or xylene/framework interactions in the high-coverage B.ZSM-5/nXYL complex (n up to approx. =8 p-xylene molecules/unit-cell).},
doi = {10.1016/0025-5408(88)90099-2},
url = {https://www.osti.gov/biblio/7007988}, journal = {Mater. Res. Bull.; (United States)},
number = ,
volume = 23:2,
place = {United States},
year = {Mon Feb 01 00:00:00 EST 1988},
month = {Mon Feb 01 00:00:00 EST 1988}
}