Effect of acid addition on hydrogen production from potassium borohydride hydrolysis


Balbay A., Sahin Ö. , Saka C.

ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS, vol.39, no.13, pp.1383-1389, 2017 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 13
  • Publication Date: 2017
  • Doi Number: 10.1080/15567036.2017.1331279
  • Title of Journal : ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
  • Page Numbers: pp.1383-1389
  • Keywords: Activation energy, boric acid, catalyst, hydrogen, kinetic, mechanism, potassium borohydride, production, SODIUM-BOROHYDRIDE, CATALYTIC HYDROLYSIS, COMPLEX CATALYST, NABH4 HYDROLYSIS, PLASMA TREATMENT, GENERATION

Abstract

This is the first study to produce hydrogen from the potassium borohydride (KBH4) hydrolysis using boric acid (H3BO3). The effect of H3BO3 addition on the hydrogen production via KBH4 hydrolysis was investigated for different H3BO3 and KBH4 molar ratios. In addition, the temperature effect on the hydrolysis reaction was investigated at different temperatures. H3BO3 showed good catalytic activity to produce hydrogen from KBH4 hydrolysis. Activation energy to produce hydrogen from KBH4 hydrolysis was found to be 20.31 kJ/mol. This work also includes kinetic information for the hydrolysis of KBH4. According to the kinetic studies, the reaction between H3BO3 and KBH4 had a reaction order of 0.24 against the H3BO3 concentration, while it had a reaction order of 0.16 against the KBH4 concentration.