Adsorption structure of dimethyl ether on silicalite-1 zeolite determined using single-crystal X-ray diffraction
| Autor: | Koji Nishi, Yoshinobu Yokomori, Natsumi Kamiya, Shintaro Seino, Shinjiro Fujiyama |
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| Rok vydání: | 2014 |
| Předmět: |
Stereochemistry
dimethyl ether macromolecular substances complex mixtures single-crystal structure analysis symbols.namesake chemistry.chemical_compound Adsorption Materials Chemistry silicalite-1 Molecule Dimethyl ether Zeolite adsorption structure Chemistry Metals and Alloys MFI-type zeolite Sorption Research Papers Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials X-ray crystallography symbols Physical chemistry van der Waals force Single crystal |
| Zdroj: | Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials |
| ISSN: | 2052-5206 |
| Popis: | The most stable sorption site of dimethyl ether on silicalite-1 is the sinusoidal channel. The configuration of guest molecules (linear or bent) plays an important role in determining where the stable sorption site is situated. The adsorption structures of dimethyl ether (DME) on silicalite-1 zeolite (MFI-type) are determined using single-crystal X-ray diffraction. The structure of low-loaded DME-silicalite-1 indicates that all DME molecules are located in the sinusoidal channel, which is the most stable sorption site based on the van der Waals interaction between DME and the framework. The configuration of guest molecules (linear or bent) plays an important role in determining where the stable sorption site is in the pore system of MFI-type zeolites. Bent molecules favor the sinusoidal channel, while linear molecules favor the straight channel. The contribution of DME–DME interactions is considerable in the high-loaded DME-silicalite-1 structure. |
| Databáze: | OpenAIRE |
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