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The Role of Temperature and Adsorbate on Negative Gas Adsorption in the Mesoporous Metal-Organic Framework DUT-49

preprint
submitted on 27.01.2020, 10:25 and posted on 28.01.2020, 07:21 by Simon Krause, Jack D. Evans, Volodymyr Bon, Irena Senkovska, François-Xavier Coudert, Daniel D. Többens, Dirk Wallacher, Nico Grimm, Stefan Kaskel
In this contribution, we present an extensive investigation of adsorption of a range of different gases at various temperatures in DUT-49, a metal-organic framework which features a negative gas adsorption (NGA) transition. Adsorption experiments at temperatures ranging from 21 to 308 K, were used to identify, for each guest, a critical temperature range in which NGA occurs. The experimental results were complemented by molecular simulations that rationalize the absence of NGA at elevated temperatures and the non-monotonic behavior observed upon temperature decrease.

Funding

European Research Council (ERC) under the European 45 Union’s Horizon 2020 research and innovation programme (grant agreement No. 742743)

History

Email Address of Submitting Author

simon.krause@rug.nl

Institution

University of Groningen

Country

The Netherlands

ORCID For Submitting Author

0000-0001-9504-8514

Declaration of Conflict of Interest

There are no conflicts to declare.

Version Notes

Initial version of submission