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High-throughput DFT screening and experimental characterization of ternary oxides for high temperature carbon capture and storage

preprint
submitted on 02.11.2017, 16:48 and posted on 03.11.2017, 15:48 by Michael Gaultois, Matthew T Dunstan, Adam W Bateson, Martin Chan, Clare P Grey
This work describes the experimental characterisation and CO2 sorption properties of several new ternary transition metal oxides predicted by high-throughput DFT screening. One material reported here, Li5SbO5, displays reversible CO2 sorption, and maintains ~72% of its theoretical capacity out to 25 cycles.
The results in this work are used to discuss major influences on CO2 absorption capacity and rate, including the role of the crystal structure, the transition metal, the alkali or alkaline earth metal, and the competing roles of thermodynamics and kinetics.
Notably, this work shows the extent and rate to which ternary metal oxides carbonate is driven primarily by the identity of the alkali or alkaline earth ion and the nature of the crystal structure, whereas the identity of the transition ion carries little influence in the systems studied here.

Funding

Horizon 2020 research and innovation programme under the Marie Sklodowska--Curie grant agreement No. 659764

History

Topic

  • Ceramics
  • Geological Materials

Email Address of Submitting Author

listerite@gmail.com

Email Address(es) for Other Author(s)

cpg27@cam.ac.uk

Institution

Department of Chemistry, University of Cambridge

Country

United Kingdom

ORCID For Submitting Author

0000-0003-2172-2507

Declaration of Conflict of Interest

no conflict of interest

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