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Proton Conductivity, Stability and Potential for Polymorphism in Metal-Organic Framework Minerals

preprint
submitted on 08.11.2018, 15:24 and posted on 09.11.2018, 15:43 by Igor Huskić, Novendra Novendra, Dae-Woo Lim, Filip Topic, Hatem M. Titi, Igor Pekov, Sergey Krivovichev, Alexandra Navrotsky, Hiroshi Kitagawa, Tomislav Friscic
We demonstrate that rare metal-organic framework (MOF) minerals stepanovite and zhemchuzhnikovite can exhibit properties comparable to known oxalate MOFs, including high proton conductivity at 25 oC, and retention of the framework structure upon thermal dehydration. They also have high thermodynamic stability, with a pronounced stabilizing effect of substituting aluminium for iron, illustrating a simple design to access stable, highly proton-conductive MOFs without using complex organic ligands.

Funding

NSERC RGPIN-2017-06467

NSERC SMFSU 507347-17

U.S. Department of Energy Office of Science, grant DE-SC0016573

ACCEL program, Japan Science and Technology Agency (JST), JPMJAC1501

History

Email Address of Submitting Author

tomislav.friscic@mcgill.ca

Institution

McGill University

Country

Canada

ORCID For Submitting Author

0000-0002-3921-7915

Declaration of Conflict of Interest

No conflict of interest

Version Notes

This is version 1

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