Micro-imaging of transient guest profiles in nanoporous host systems of cylindrical symmetry.
Micro-imaging of transient guest profiles in nanoporous host systems of cylindrical symmetry.
复制标题
圆柱对称纳米多孔主体系统中瞬态客体轮廓的显微成像。
DOI：
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发表时间：
2012
影响因子：
4.4
通讯作者：
D. Ruthven
中科院分区：
文献类型：
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作者：
Tomas Binder;Florian Hibbe;C. Chmelik;J. Kärger;A. Martinez;J. Gascón;F. Kapteijn;D. Ruthven
纳米多孔主体材料在分子吸收和释放过程中产生圆柱对称的瞬态客体轮廓，为通过显微成像研究客体扩散提供了特别有利的条件。考虑到结构类型 DDR (Deca-dodecasil 3R) 的沸石作为主体系统，短链碳氢化合物作为客体分子，使用干涉显微镜进行显微成像研究所获得的好处包括以更高的精度确定瞬态浓度分布、克服表面缺陷的干扰影响的选择以及轻松获得浓度依赖性扩散率。
Nanoporous host materials giving rise to transient guest profiles of cylindrical symmetry during molecular uptake and release are shown to provide particularly advantageous conditions for the study of guest diffusion by micro-imaging. Considering zeolites of structure type DDR (Deca-dodecasil 3R) as a host system and short-chain length hydrocarbons as guest molecules, the benefits thus attainable in micro-imaging studies using interference microscopy are shown to include the determination of transient concentration profiles with improved accuracy, the option to overcome the disturbing impact of surface imperfections, and easy access to concentration-dependent diffusivities.