Abstract
Abstract Stearic acid gel is employed to study the phase evolution of MgTiO 3 nanoparticles by thermal gravimetric analysis, X-ray diffraction, and Fourier transform infrared. During the preparation of stearic acid gel, tetrabutyl titanate easily absorbed moisture to hydrolyze into Ti(OH) 4 firstly, and then reacts with stearic acid and magnesium stearate to form magnesium–titanium oxide network polymer gel, meanwhile n-butanol is generated. When stearic acid gel is calcined in air, a series of oxidation and combustion reactions occur, meanwhile apparent heat is given off. The results show that a metastable intermediate phase Mg 2 TiO 4 is generated at 450 °C and nearly disappeared at 550 °C. Simultaneously, a new solid phase of MgTiO 3 appears. The metastable intermediate phase Mg 2 TiO 4 is successfully identified in the current work.
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