Understanding Gas-Induced Structural Deformation of ZIF-8

ZIF-8 is a zeolitic imidazolate framework with very good thermal and chemical stability that opens up many applications that are not feasible by other metal–organic frameowrks (MOFs) and zeolites. Several works report the adsorption properties of ZIF-8 for strategic gases. However, despite the vast...

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Veröffentlicht in:The journal of physical chemistry letters 2012-05, Vol.3 (9), p.1159-1164
Hauptverfasser: Ania, Conchi O, García-Pérez, E, Haro, M, Gutiérrez-Sevillano, J. J, Valdés-Solís, T, Parra, J. B, Calero, S
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container_end_page 1164
container_issue 9
container_start_page 1159
container_title The journal of physical chemistry letters
container_volume 3
creator Ania, Conchi O
García-Pérez, E
Haro, M
Gutiérrez-Sevillano, J. J
Valdés-Solís, T
Parra, J. B
Calero, S
description ZIF-8 is a zeolitic imidazolate framework with very good thermal and chemical stability that opens up many applications that are not feasible by other metal–organic frameowrks (MOFs) and zeolites. Several works report the adsorption properties of ZIF-8 for strategic gases. However, despite the vast experimental corpus of data reported, there seems yet to be a dearth in the understanding of the gas adsorption properties. In this work we provide insights at a molecular level on the mechanisms governing the ZIF-8 structural deformation during molecular adsorption. We demonstrate that the ZIF-8 structural deformation during the adsorption of different molecules at cryogenic temperature goes beyond the gas-induced rotation of the imidazolate linkers. We combine experimental and simulation studies to demonstrate that this deformation is governed by the polarizability and molecular size and shape of the gases, and that the stepped adsorption behavior is defined by the packing arrangement of the guest inside the host.
doi_str_mv 10.1021/jz300292y
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subjects Catalysis
Chemical Sciences
Environmental Engineering
Environmental Sciences
Material chemistry
Surfaces, Interfaces, Porous Materials, and Catalysis
title Understanding Gas-Induced Structural Deformation of ZIF-8
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