Abstract
Mn-based oxides are promising materials for thermochemical heat storage based on redox cycles, since they are abundant materials whose reduction and oxidation reactions take place in the temperature range at which future CSP plants will work. However, sintering processes related to high temperature cycling can lead to a complete material deactivation that eventually will suppose the loss of cyclability. In this work we present two approaches that have been proposed as to overcome such deactivation. In this respect morphological and chemical modifications were studied. Results showed that even if the first cycle oxidation is enhanced by the presence of macroporosity, sintering also affects to that structures causing a decrease on the oxidation rate. Conversely, chemical modifications, namely addition of cations of Cr and Fe can stabilize the oxidation rate over long term cycling. Specially, by incorporating Fe to the Mn oxide structure the oxidation reaction is remarkably stabilized and improved.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
