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Sorbate-induced changes in the framework of the titanosilicate ETS-10 as detected by 29Si MAS NMR spectroscopy and X-ray powder diffraction

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Zibrowius,  Bodo
Service Department Mynott (NMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Weidenthaler,  Claudia
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Schmidt,  Wolfgang
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Zibrowius, B., Weidenthaler, C., & Schmidt, W. (2003). Sorbate-induced changes in the framework of the titanosilicate ETS-10 as detected by 29Si MAS NMR spectroscopy and X-ray powder diffraction. Physical Chemistry Chemical Physics, 5(4), 773-777. doi:10.1039/B210235H.


Cite as: https://hdl.handle.net/11858/00-001M-0000-000F-98FF-9
Abstract
The framework of ETS-10 undergoes reversible structural changes upon dehydration and rehydration. Pronounced differences in the 29Si MAS NMR spectra clearly indicate rearrangements in the local environment, while the X-ray powder diffraction patterns provide evidence for a long-range effect of the guest/host interaction. A detailed analysis of the structural changes by XRD is hampered by the known disorder of the framework of ETS-10. The adsorption of other polar molecules such as methanol and ammonia also leads to fingerprint-like 29Si MAS NMR spectra. Less pronounced variations in the 29Si MAS NMR line shape are observed upon adsorption of non-polar species such as n-pentane.