Diffusion study by IR micro-imaging of molecular uptake and release on mesoporous zeolites of structure type CHA and LTA
Bonilla MR, Titze T, Schmidt F, Mehlhorn D, Chmelik C, Valiullin R, Bhatia SK, Kaskel S, Ryoo R, Kaerger J (2013)
Publication Type: Journal article
Publication year: 2013
Journal
Book Volume: 6
Pages Range: 2662-2688
Journal Issue: 7
DOI: 10.3390/ma6072662
Abstract
The presence of mesopores in the interior of microporous particles may significantly improve their transport properties. Complementing previous macroscopic transient sorption experiments and pulsèd field gradient NMR self-diffusion studies with such materials, the present study is dedicated to an in-depth study of molecular uptake and release on the individual particles of mesoporous zeolitic specimens, notably with samples of the narrow-pore structure types, CHA and LTA. The investigations are focused on determining the time constants and functional dependences of uptake and release. They include a systematic variation of the architecture of the mesopores and of the guest molecules under study as well as a comparison of transient uptake with blocked and un-blocked mesopores. In addition to accelerating intracrystalline mass transfer, transport enhancement by mesopores is found to be, possibly, also caused by a reduction of transport resistances on the particle surfaces. © 2013 by the authors; licensee MDPI, Basel, Switzerland.
Involved external institutions
Universität Leipzig
Germany (DE)
Technische Universität Dresden
Germany (DE)
University of Queensland
Australia (AU)
Institute for Basic Science
Korea, Republic of (KR)
Germany (DE)
Technische Universität Dresden
Germany (DE)
University of Queensland
Australia (AU)
Institute for Basic Science
Korea, Republic of (KR)
How to cite
APA:
Bonilla, M.R., Titze, T., Schmidt, F., Mehlhorn, D., Chmelik, C., Valiullin, R.,... Kaerger, J. (2013). Diffusion study by IR micro-imaging of molecular uptake and release on mesoporous zeolites of structure type CHA and LTA. Materials, 6(7), 2662-2688. https://doi.org/10.3390/ma6072662
MLA:
Bonilla, Mauricio Rincon, et al. "Diffusion study by IR micro-imaging of molecular uptake and release on mesoporous zeolites of structure type CHA and LTA." Materials 6.7 (2013): 2662-2688.
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