Abstract
Wüstite modified with calcium cations was prepared by high temperature fusion. Mössbauer spectroscopy and X-ray diffraction were employed to identify wüstite phases before and after thermal treatment at elevated temperatures in vacuum with a base pressure of 1.33 Pa for 60 h. Experimental results demonstrated that the location of calcium cations inside the wüstite structure could prevent disproportionation into magnetite and α-iron.
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Li, X., Cen, Y., Liu, H. et al. Thermal stability of wüstite structure modified with calcium cations. Reaction Kinetics and Catalysis Letters 81, 313–320 (2004). https://doi.org/10.1023/B:REAC.0000019438.14134.3c
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DOI: https://doi.org/10.1023/B:REAC.0000019438.14134.3c