Synthesis, characterization, and electrical and optical properties of magnesium-type boracite

Authors : TUĞBA İBROŞKA, AZMİ SEYHUN KIPÇAK, SÜREYYA AYDIN YÜKSEL, EMEK DERUN, SABRİYE PİŞKİN

Pages : 1025-1037

View : 17 | Download : 10

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Synthesis of the magnesium type of the mineral boracite insert ignore into journalissuearticles values(Mg$_{3}$B$_{7}$O$_{13}$Cl); was studied. Several parameters affecting boracite synthesis were investigated. The raw materials selected were magnesium chloride hexahydrate insert ignore into journalissuearticles values(MgCl$_{2}$.6H$_{2}$O);, magnesium oxide insert ignore into journalissuearticles values(MgO);, and boron oxide insert ignore into journalissuearticles values(B$_{2}$O$_{3});$. Reaction temperatures were selected between 600~$^{\circ}$C and 900 $^{\circ}$C. Moreover, three different reaction times of 4, 1, and 0.5 h were studied with the determined optimum molar ratio, reaction temperature, and reaction medium. Synthesized boracite characterization analyses were done by the techniques of X-ray diffraction insert ignore into journalissuearticles values(XRD);, Fourier transform infrared spectroscopy insert ignore into journalissuearticles values(FT-IR);, and scanning electron microscope insert ignore into journalissuearticles values(SEM);. Reaction yields were also calculated. From the results of this study the magnesium type of boracite was obtained as a single phase with high XRD crystal score. Optimum conditions for the synthesis were as follows: MgCl$_{2}$.6H$_{2}$O to B$_{2}$O$_{3}$ mole ratios of 5:6.5, 5:7.5, 6:6.5, 6:7.5, 7:6.5, 7:7.5; 600 $^{\circ}$C reaction temperature; 1 h reaction time; and reaction medium as air atmosphere. Reaction yields were between 58.81 $\pm $ 1.65{\%} and 77.49 $\pm $ 1.86{\%}. Some selected magnesium type of boracite minerals, electrical resistivity, and optical absorbance properties were also measured for the determination of physical properties.
Keywords : Magnesium type boracite, solid state synthesis, reaction yield