Preparation, characterization, and thermal stability of B2O3-SiO2

Abstract

Preparation of B₂O₃-SiO₂ compound by inorganic synthesis was carried out. B₂O₃-SiO₂ was characterized by FT-IR spectro-photometer, analysis of crystallinity by XRD, and test of acidity. B₂O₃-SiO₂ was also tested by thermal stability with temperature range at 300-700 ⁰C. The results showed that the FT-IR spectrum of B₂O₃-SiO₂ has some vibrations of B-O, Si-O-Si, Si-O-B stretching, and Si-O-B bending at 1442.8 cm^-1, 779.2 cm^-1, 925.8 cm^-1, and 648.1 cm^-1. The X-Ray diffraction pattern results showed that the analysis of B₂O₃-SiO₂ has high crystallinity with two peaks diffraction identified at 26.6⁰ and 20.9⁰. The thermal stability test of B₂O₃-SiO₂ showed that B₂O₃-SiO₂ has high thermal stability with temperature range at 300-700 ⁰C. The results showed that the acidity analysis of B₂O₃-SiO₂ has potential number 122.71 mV so that indicated B₂O₃-SiO₂ was high acidity.

Keywords : boric oxide, silica dioxide, boric silica, B₂O₃-SiO₂