Impact of Xylose on Dynamics of Water Diffusion in Mesoporous Zeolites Measured by NMR
| Autor: | Joelle E. Romo, Joseph D. Seymour, Madison L. Nelson, Stephanie G. Wettstein |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Diffusion Pharmaceutical Science zeolites Xylose 010402 general chemistry Furfural 01 natural sciences biomolecules Article Analytical Chemistry Catalysis chemistry.chemical_compound QD241-441 Drug Discovery NMR diffusometry Physical and Theoretical Chemistry Zeolite Porosity 010405 organic chemistry Organic Chemistry 0104 chemical sciences Chemical engineering chemistry Chemistry (miscellaneous) Permeability (electromagnetism) heterogeneous catalysis sugar conversion Molecular Medicine Mesoporous material |
| Zdroj: | Molecules Volume 26 Issue 18 Molecules, Vol 26, Iss 5518, p 5518 (2021) |
| ISSN: | 1420-3049 |
| DOI: | 10.3390/molecules26185518 |
| Popis: | Zeolites are known to be effective catalysts in biomass converting processes. Understanding the mesoporous structure and dynamics within it during such reactions is important in effectively utilizing them. Nuclear magnetic resonance (NMR) T2 relaxation and diffusion measurements, using a high-power radio frequency probe, are shown to characterize the dynamics of water in mesoporous commercially made 5A zeolite beads before and after the introduction of xylose. Xylose is the starting point in the dehydration into furfural. The results indicate xylose slightly enhances rotational mobility while it decreases translational motion through altering the permeability, K, throughout the porous structure. The measurements show xylose inhibits pure water from relocating into larger pores within the zeolite beads where it eventually is expelled from the bead itself. |
| Databáze: | OpenAIRE |
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