Abstract
Single phase specimen of polycrystalline Ba2Fe2O5, which has been a candidate for CO2 absorbents, was prepared by solid state reaction method in N2 gas flow (log p(O2) ~10−4 atm). Ba2Fe2O5 showed weight increase above 500°C in CO2 gas flow, which is originated from the CO2 absorption. In CO2 gas flow, the weight decrease due to the CO2 desorption was observed above 1100°C. Thermogravimetry and X‐ray diffraction measurements have revealed that Ba2Fe2O5 can reversibly react with CO2, which is represented as Ba2Fe2O5 + CO2 ↔ BaCO3 + BaFe2O4. Thermodynamic calculation of the reaction was carried out, showing agreement with the results obtained by thermogravimetry. From the calculation, it has been revealed that Ba2Fe2O5 can react with CO2 at a higher temperature than Li4SiO4 regardless of partial pressure of CO2 (p(CO2)), indicating that Ba2Fe2O5 has a higher potential as CO2 absorbent than Li4SiO4.
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.
