Volume 46, Number 2, April II 1999
|Page(s)||204 - 210|
|Section||Condensed matter: structure, mechanical and thermal properties|
|Published online||01 September 2002|
Monitoring the evolution of intracrystalline concentration
Fakultät für Physik und Geowissenschaften
Linnéstraße 5, D-04103 Leipzig, Germany
2 Universität Stuttgart, Institut für Technische Chemie I D-70550 Stuttgart, Germany
Accepted: 1 February 1999
Interference microscopy is applied to monitor the evolution of concentration profiles in zeolite crystallites during molecular uptake. Experiments of this type allow the microscopic observation of guest diffusion in host matrices under non-equilibrium conditions. For zeolites of type NaCaA, comparison of the thus determined diffusivities with the results of pulsed field gradient NMR self-diffusion studies, i.e. with the results of the corresponding equilibrium measurements, yields satisfactory agreement.
PACS: 66.33.-h – Diffusion in solids / 82.20.Mj – Nonequilibrium kinetics / 42.25.Hz – Optics: Interference
© EDP Sciences, 1999
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.