Controlled synthesis, characterization and thermal properties of Mg2B2O5


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ÜÇYILDIZ A., GİRGİN İ.

CENTRAL EUROPEAN JOURNAL OF CHEMISTRY, cilt.8, sa.4, ss.758-765, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 8 Sayı: 4
  • Basım Tarihi: 2010
  • Doi Numarası: 10.2478/s11532-010-0039-6
  • Dergi Adı: CENTRAL EUROPEAN JOURNAL OF CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.758-765
  • Hacettepe Üniversitesi Adresli: Evet

Özet

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.