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Ln<sub>0.5</sub>A<sub>0.5</sub>MnO<sub>3</sub> (Ln=Lanthanide, A= Ca, Sr) Perovskites Exhibiting Remarkable Performance in the Thermochemical Generation of CO and H<sub>2</sub> from CO<sub>2</sub> and H<sub>2</sub>O
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Citations
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References
2015
Year
Rare Earth MineralSmallest Rare EarthEngineeringHalide PerovskitesRemarkable PerformanceChemistryThermochemical GenerationInorganic MaterialPerovskite OxidesChemical EngineeringLn0.5 A0.5 Mno3Materials ScienceInorganic ChemistryOxide HeterostructuresPerovskite MaterialsPhysical ChemistryHydrogenLead-free PerovskitesA= CaPerovskite Solar CellEnergy CeramicCondensed Matter Physics
Perovskite oxides of the Ln0.5 A0.5 MnO3 (Ln=lanthanide, A=Sr, Ca) family have been investigated for the thermochemical splitting of H2 O and CO2 to produce H2 and CO respectively. The amounts of O2 and CO produced strongly depend on the size of the rare earth ions and alkaline earth ions. The manganite with the smallest rare earth possessing the highest distortion and size disorder as well as the smallest tolerance factor, gives out the maximum amount of O2 , and, hence, the maximum amount of CO. Thus, the best results are found with Y0.5 Sr0.5 MnO3 , which possesses the highest distortion and size disorder. Y0.5 Sr0.5 MnO3 shows remarkable fuel production activity even at the reduction and oxidation temperatures as low as 1200 °C and 900 °C, respectively.
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