Thermal behavior studies of the homopolynuclear coordination compound iron(III) polyoxalate
2016
Niculescu, Mircea | Sasca, Viorel | Muntean, Cornelia | Milea, Marius-Silviu | Rosu, Dan | Pascariu, Mihai-Cosmin | Sisu, Eugen | Ursoiu, Ioan | Pode, Vasile | Budrugeac, Petru
The thermal decomposition in dynamic oxidative atmosphere of the new homopolynuclear coordination compound [Fe(C2O4)(OH)(OH2)]n·0.3nH2O was investigated by simultaneously using TG, DTG and DTA techniques. Solid-state decomposition products formed during heating at different temperatures (350°C, 800°C and 1000°C) were analyzed by physical-chemical methods, including electronic spectroscopy (diffuse reflectance technique), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD analysis data show that the final decomposition product, namely hematite (α-Fe2O3), is relatively well crystallized, while SEM images reveal that the particles exhibit irregular forms, their size being widely distributed between 6nm and 4μm.
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