Abstract
Synthesis of Ca-Fe-O using coprecipitation method employing CaCO3 and Fe2O3 has been conducted. Extraction of limestone as the raw material of precipitated calcium carbonate (PCC) and iron sands as that of Fe2O3 was prepared to explore various compound of Ca-Fe-O. PCC and Fe2O3 are dissolved in HCl then mixed into homogeneous and precipitated using NH4OH. Mixing is resolved by the mass ratio of PCC and Fe2O3 with a ratio of 1/4, 1/6, 1/8, 1/12. The results of synthesis are sintering at temperature of 7000C. The sintered samples were characterized by XRD and SEM-EDX. The results of XRD is indicated the formation of Ca-Fe-O phases that is dominated by Ca2Fe2O5 and Ca2Fe9O13 phases, and results of SEM/EDX indicate nanoscale particle size that is composed of Ca, Fe, O, and Si elements.
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