Browsing by Author "Govhaa, Joseph"

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    Effects of Calcination Temperature on properties of Mg-Al mixed oxide nanoparticle.
    (Materials Today: Proceedings 2, 2015-01-01) Govhaa, Joseph; Narasaiaha, T. Bala; Chakrab, Ch.Shilpa; Kumar, Pramod
    The limited size and high density of surface sites that characterize nanoparticles result in unique chemical and physical properties. Magnesium aluminum mixed oxide was synthesized by co-precipitation method using Al2 (SO4)3.16H2O and MgSO4.7H2O precursors in 1:1 molar ratio. The calcination temperature was varied from 250, 300 and 700o C. Nanoparticles synthesized were characterized using X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and TGA-DTA. At low temperature synthesized spherical particles are amorphous and they start to transform into spinel crystalline structure around 650o C. Generally particle size increased with increase in temperature.