Moisture-triggered ambient-temperature carbonatization of main group II metal oxides under elevated CO2 pressure
- Author(s)
- Georg Gravogl, Werner Artner, Elisabeth Eitenberger, Gernot Friedbacher, Michael Harasek, Christian Knoll, Ronald Miletich, Danny Müller, Peter Weinberger, Andreas Werner
- Abstract
The reversible reaction of metal oxides with CO2 forming metal carbonates with concomitant release of energy is considered as a promising concept for thermochemical energy storage. One major advantage of thermochemical energy storage materials is the possibility of a lossless mid-term and long-term storage of waste heat. Metal carbonates provide high-energy densities and were so far investigated for their application in high-temperature processes. Inspired by the carbonatization of (main group II) metal oxides in nature during mineralization and CO2 fixation in the presence of moisture under elevated pressures, the Me (II) oxides (Me = Mg, Ca, Sr, Ba) were investigated with respect to their reactivities with CO2 at pressures up to 55 bar and ambient temperature. Whereas for MgO none of the applied conditions yielded any formation of a carbonate phase, the other oxides revealed appropriate reactivities by forming corresponding carbonates under considerably mild reaction conditions.
- Organisation(s)
- Department of Mineralogy and Crystallography
- External organisation(s)
- Technische Universität Wien
- No. of pages
- 12
- DOI
- https://doi.org/10.18086/swc.2017.14.01
- Publication date
- 2017
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 104003 Inorganic chemistry, 104011 Materials chemistry, 105113 Crystallography
- Keywords
- ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/c8206a34-d5ff-421c-b3ce-99e77adc83d2