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Locating Gases in Porous Materials: Cryogenic Loading of Fuel-Related Gases Into a Sc-based Metal-Organic Framework under Extreme Pressures

Lookup NU author(s): Dr Mike Probert

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Abstract

An alternative approach to loading metal organic frameworks with gas molecules at high (kbar) pressures is reported. The technique, which uses liquefied gases as pressure transmitting media within a diamond anvil cell along with a single-crystal of a porous metal-organic framework, is demonstrated to have considerable advantages over other gas-loading methods when investigating host-guest interactions. Specifically, loading the metal-organic framework Sc2BDC3 with liquefied CO2 at 2kbar reveals the presence of three adsorption sites, one previously unreported, and resolves previous inconsistencies between structural data and adsorption isotherms. A further study with supercritical CH4 at 3-25kbar demonstrates hyperfilling of the Sc2BDC3 and two high-pressure displacive and reversible phase transitions are induced as the filled MOF adapts to reduce the volume of the system.


Publication metadata

Author(s): Sotelo J, Woodall CH, Allan DR, Gregoryanz E, Howie RT, Kamenev KV, Probert MR, Wright PA, Moggach SA

Publication type: Article

Publication status: Published

Journal: Angewandte Chemie International Edition

Year: 2015

Volume: 54

Issue: 45

Pages: 13332-13336

Print publication date: 02/11/2015

Online publication date: 11/09/2015

Acceptance date: 01/01/1900

ISSN (print): 1433-7851

ISSN (electronic): 1521-3773

Publisher: Wiley-Blackwell Publishing Ltd.

URL: http://dx.doi.org/10.1002/anie.201506250

DOI: 10.1002/anie.201506250


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