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Mechanically assisted solid state synthesis of Mg2SnO4

Research Area: Uncategorized Year: 2012
Type of Publication: Article Keywords: Mg2SnO4; High-energy milling; Solid state synthesis; Mechano-thermal synthesis; Molar heat capacity
Authors:
Journal: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY Volume: 110
Number: 2 Pages: 831-837
Month: November
ISSN: 1388-6150
Abstract:
Simultaneous TG-DSC measurements have been used to study the solid state reaction in the system SnC2O4-4MgCO(3)center dot Mg(OH)(2)center dot xH(2)O (Sn:Mg = 0.5). The results obtained with physically prepared mixture and with mixture mechanically activated by high-energy milling are compared. Synthesis of the compound Mg2SnO4 has been attempted starting from both type of mixture: Mg2SnO4 forms by annealing the activated mixture at temperatures between 850 and 1,000 degrees C while it can hardly be obtained from physical mixtures even by thermal treatment at temperature as high as 1,300-1,350 degrees C. Mg2SnO4 prepared by annealing the activated mixture has been characterized by diffuse reflectance FT-IR spectroscopy, modulated temperature differential scanning calorimetry, scanning electron microscopy, and specific surface area measurements (B.E.T. method).
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