Controlled synthesis, characterization and thermal properties of Mg2B2O5


ÜÇYILDIZ A. , GİRGİN İ.

CENTRAL EUROPEAN JOURNAL OF CHEMISTRY, vol.8, no.4, pp.758-765, 2010 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 8 Issue: 4
  • Publication Date: 2010
  • Doi Number: 10.2478/s11532-010-0039-6
  • Title of Journal : CENTRAL EUROPEAN JOURNAL OF CHEMISTRY
  • Page Numbers: pp.758-765

Abstract

Optimum conditions for synthesizing monoclinic and triclinic Mg2B2O5 compounds by high-temperature solid-state reactions were investigated. Mixtures composed of boric acid and magnesium oxide at MgO:B2O3 mole ratios of 1:0.25, 1:0.5 and 1:1.5 were heated for 1 hour at temperatures between 600-1050 degrees C and the formed phases were identified by XRD analysis. Monoclinic Mg2B2O5 was formed by heating at 850 degrees C for 4 hours together with minimum amounts of triclinic Mg2B2O5, while triclinic Mg2B2O5 was formed as a single phase at 1050 degrees C for the same reaction time. The products obtained at optimum conditions were subjected to a series of tests to determine their chemical compositions, particle size distributions, surface area values, IR spectra and TG/DTA patterns.