Effects of different temperatures and additives on the metastable zone width precipitation kinetics of NaBO2


Kaya M., Ceyhan A. A. , Sahin Ö.

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A, vol.88, no.3, pp.402-408, 2014 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 88 Issue: 3
  • Publication Date: 2014
  • Doi Number: 10.1134/s0036024414030182
  • Title of Journal : RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
  • Page Numbers: pp.402-408
  • Keywords: sodium metaborate, sodium borohydride, nucleation, metastable zone width, impurities, SODIUM-BOROHYDRIDE, HYDROGEN STORAGE, ENERGY

Abstract

In this study, the sodium metaborate, which is applicable in various industrial areas, and its metastable zone width that is very important for its production by crystallization, and its nucleation are investigated to obtain the necessary thermodynamic parameters. The polythermal and isothermal method has been used for the measurement of metastable zone width. Metastable zone width of NaBO2 has found at 9A degrees C at average and cooling rate do not have any effect on it. In addition, the effect of sodium metaborate on the hydrogen storage capacity of sodium borohyride solutions that is known as one of the best hydrogen sources today is investigated at the various concentrations of sodium borohyride in the medium. Results have shown that three different areas emerged as the percentage of NaBH4 in the solution increased.