Hexane Self-Diffusion in Bed of Glass Spheres. Testing Applicability Range of the Pore-Hopping Model
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10109584" target="_blank" >RIV/00216208:11320/11:10109584 - isvavai.cz</a>
Result on the web
<a href="http://www.uni-leipzig.de/diffusion/contents_vol16.html" target="_blank" >http://www.uni-leipzig.de/diffusion/contents_vol16.html</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Hexane Self-Diffusion in Bed of Glass Spheres. Testing Applicability Range of the Pore-Hopping Model
Original language description
PFG NMR experiment is in principle capable to provide important transport-structural parameters of system consisting of a liquid confined in a porous matrix such as surface- to-volume ratio and tortuosity. The apparent diffusion coefficient is easily obtained in the case of Gaussian shape of the diffusion propagator. Dependence of these values on the diffusion time in a short time limit is then used to derive the surface-to-volume ratio by means of the formula derived by Mitra. Tortuosity is, on the other hand, derived from the long time limit of the apparent self-diffusion coefficient. The general description of the apparent diffusion coefficient dependence for all values of diffusion time has been facilitated by Padé approximant. It has been shown previously several times that the assumption of Gaussian diffusion propagator may not be true for intermediate diffusion times. This effect is also called diffusion diffraction. Callaghan reported interpretation of diffusion diffractions in
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
BO - Biophysics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GAP204%2F11%2F1206" target="_blank" >GAP204/11/1206: Use of PFG NMR, stochastic reconstruction and molecular simulation to estimate transport-related texture characteristics of advanced porous materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů