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Materials 2015, 8(6), 3767-3775; doi:10.3390/ma8063767

Liquid- and Gas-Phase Diffusion of Ferrocene in Thin Films of Metal-Organic Frameworks

Institut für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
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Academic Editor: Sergey Vasenkov
Received: 5 May 2015 / Revised: 2 June 2015 / Accepted: 9 June 2015 / Published: 19 June 2015
(This article belongs to the Special Issue Diffusion under Confinement in Nanopores)
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Abstract

The mass transfer of the guest molecules in nanoporous host materials, in particular in metal-organic frameworks (MOFs), is among the crucial features of their applications. By using thin surface-mounted MOF films in combination with a quartz crystal microbalance (QCM), the diffusion of ferrocene vapor and of ethanolic and hexanic ferrocene solution in HKUST-1 was investigated. For the first time, liquid- and gas-phase diffusion in MOFs was compared directly in the identical sample. The diffusion coefficients are in the same order of magnitude (~10−16 m2·s−1), whereas the diffusion coefficient of ferrocene in the empty framework is roughly 3-times smaller than in the MOF which is filled with ethanol or n-hexane. View Full-Text
Keywords: metal-organic frameworks; diffusion; mass transfer; gas phase; liquid phase metal-organic frameworks; diffusion; mass transfer; gas phase; liquid phase
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Zhou, W.; Wöll, C.; Heinke, L. Liquid- and Gas-Phase Diffusion of Ferrocene in Thin Films of Metal-Organic Frameworks. Materials 2015, 8, 3767-3775.

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