Ensemble Measurement of Diffusion: Novel Beauty and Evidence

被引：45
作者：
Chmelik, Christian [1 ]
Heinke, Lars [1 ]
Kortunov, Pavel [1 ,2 ]
Li, Jing
Olson, David [3 ]
Tzoulaki, Despina [1 ]
Weitkamp, Jens [4 ]
Kaerger, Joerg [1 ]
机构：
[1] Univ Leipzig, Dept Interface Phys, D-04103 Leipzig, Germany
[2] ExxonMobile Res & Engn Co, Corp Strateg Res, Annandale, NJ 08801 USA
[3] Rutgers State Univ, Dept Chem & Chem Biol, Piscataway, NJ 08854 USA
[4] Univ Stuttgart, Inst Tech Chem, D-70550 Stuttgart, Germany
来源：
CHEMPHYSCHEM | 2009年 / 10卷 / 15期
关键词：
diffusion; metal-organic frameworks; nanoporous materials; surface permeation; zeolites; SURFACE PERMEABILITIES; GUEST; ISOBUTANE; PROFILES; CRYSTALS; NMR;
D O I：
10.1002/cphc.200900489
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Recording the evolution of concentration profiles in nanoporous materials opens a new field of diffusion research with particle ensembles. The technique is based on the complementary application of interference microscopy and IR micro-imaging. Combining the virtues of diffusion measurements with solids and fluids, it provides information of unprecedented wealth and visual power on transport phenomena in molecular ensembles. These phenomena include the diverging uptake and release patterns for concentration-dependent diffusivities, the mechanisms of mass transfer at the fluid-solid interface and opposing tendencies in local and global concentration evolution.
引用
收藏
页码：2623 / 2627
页数：5
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