The characterisation of mcallisterite synthesised from bischofite via the hydrothermal method

GURSES P., Yildirim M., KIPÇAK A. S., Yuksel S., Derun E., Piskin S.

MAIN GROUP CHEMISTRY, vol.14, no.3, pp.199-213, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 14 Issue: 3
  • Publication Date: 2015
  • Doi Number: 10.3233/mgc-150163
  • Journal Name: MAIN GROUP CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.199-213
  • Yıldız Technical University Affiliated: Yes

Abstract

This study investigated the effects of reaction time and temperature on the hydrothermal synthesis and physical properties of mcallisterite [Mg-2(B6O7(OH)(6))(2)center dot 9(H2O)], a type of a magnesium borate. Different parameters that affect the final products were determined by various techniques including X-ray diffraction (XRD), Fourier transform infrared (FT-IR) and Raman spectra, Differential Thermal Analysis and Thermal Gravimetry (DTA/TG). The surface morphology of synthesized mcallisterite was investigated by Scanning Electron Microscope (SEM). B2O3 (boron oxide) content was determined through a gravimetric method of titration. Optical absorption characteristics of mcallisterite were investigated by UV-vis spectrometer and Picoammeter Voltage Source was used to measure electrical properties.