Monitoring the evolution of intracrystalline concentration

被引：51

作者：

Schemmert, U

Kärger, J

Krause, C

Rákoczy, RA

Weitkamp, J

机构：

[1] Univ Leipzig, Fak Phys & Geowissensch, D-04103 Leipzig, Germany

[2] Univ Stuttgart, Inst Tech Chem 1, D-70550 Stuttgart, Germany

来源：

EUROPHYSICS LETTERS | 1999年 / 46卷 / 02期

关键词：

D O I：

10.1209/epl/i1999-00245-y

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页码：204 / 210

页数：7

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