Surface curvature effects on the NMR chemical shift for molecules trapped in microporous solids |
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| Affiliation: | 1. Max Planck Institute for Chemical Energy Conversion, Department of Heterogeneous Reactions, 45470 Mülheim an der Ruhr, Germany;2. Forschungszentrum Jülich, IEK-9, 52425 Jülich, Germany;3. Forschungszentrum Jülich, IBI-7 and JuStruct, 52425 Jülich, Germany;4. Fritz Haber Institute of the Max Planck Society, 14195 Berlin, Germany;5. RWTH Aachen University, Institute of Technical and Macromolecular Chemistry, 52074 Aachen, Germany;6. Heinrich Heine Universität Düsseldorf, Institute of Physical Biology, 40225 Düsseldorf, Germany |
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| Abstract: | It is shown that the chemical shifts characteristic of molecules trapped in zeolites (129Xe, and 13C for (CH3)4N+ ions) correlate directly with the surface curvature effects influencing the physisorption (dispersion) energy. Pore size is the determining parameter and other factors have negligible effect. |
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