监测无阳离子的 AlPO-LTA 型纳米多孔主晶体中的分子质量传递。
Monitoring molecular mass transfer in cation-free nanoporous host crystals of type AlPO-LTA.
机构信息
Department of Interface Physics, University of Leipzig, Linnéstraße 5, 04103 Leipzig, Germany.
出版信息
J Am Chem Soc. 2012 May 9;134(18):7725-32. doi: 10.1021/ja211492b. Epub 2012 Apr 27.
Micro-imaging is employed to monitor the evolution of intra-crystalline guest profiles during molecular adsorption and desorption in cation-free zeolites AlPO-LTA. The measurements are shown to provide direct evidence on the rate of intra-crystalline diffusion and surface permeation and their inter-relation. Complemented by PFG NMR and integral IR measurements, a comprehensive overview of the diffusivities of light hydrocarbons in this important type of host materials is provided.
微成像技术被用于监测阳离子型无定形磷酸铝（AlPO-LTA）沸石中分子吸附和解吸过程中晶内客体分布的演变。这些测量结果提供了关于晶内扩散和表面渗透及其相互关系的速率的直接证据。结合 PFG NMR 和积分 IR 测量，对这种重要类型的主体材料中轻烃的扩散系数进行了全面概述。
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