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Ass. Lect. Marwa sameeh abdelbaset mohamed :: Publications:

Thermal Decomposition of Metal Tartrates through the Preparation of Nano Cobalt Ferrite
Authors: M. Sameeh, M. Khairy, W. A. Bayoumy, Tomader El-asawi and A. A. El-Bellihi
Year: 2014
Keywords: Nano CoFe2O4, Spinel, Tartrate salts, Electrical conductivity
Journal: Journal of Basic and Environmental Sciences
Volume: 1
Issue: Not Available
Pages: 46-64
Publisher: Not Available
Local/International: International
Paper Link:
Full paper Marwa sameeh abdelbaset mohamed_paper master.pdf
Supplementary materials Not Available

Nano-crystalline CoFe2O4 particles were synthesized through thermal decomposition o of cobalt tartrate- ferric tartrate at 250, 450, 750 and 1050 C. The samples were characterized by XRD, DSC-TG, SEM, TEM and FT-IR. The XRD analysis showed that the sample calcined o at 1050 C exhibit pure spinel phase. The crystallite sizes lie in the range of 30 – 61 nm. The samples obtained at different calcination temperatures have different morphologies. The kinetics of thermal decomposition of metal tartrate mixtures were studied using non-isothermal thermogravimetric techniques. The thermal decomposition proceeds in three steps for cobalt iron (III) tartrate. The kinetic analysis of non-isothermal data of the decomposition reaction is best described by the Random nucleation in (three-dimentions) (A4) models. The activation parameters were calculated and the results of the dynamic integral methods were compared and discussed.

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