CATALYTIC HYDROLYSIS OF SODIUM BOROHYDRIDE

A study has been made of the infl uence of temperature, NaON, and concentrations of NaBH₄ on the rate of catalytic hydrolysis under isothermal and adiabatic conditions. Finely divided Co/TiO₂ powder was used as the model catalyst. The catalyst preserves its initial activity during 20 cycles, ensuring an NaBH₄ conversion of 94–98%. Activation energies equal to 65.6 and 55 kJ/mole have been determined in the aqueous and aqueous-alkaline solution of NaBH₄ respectively. It has been shown that the standard method of determining activation energy without account of sorption/desorption processes leads to its dependence on the composition of the solution
A study has been made of the infl uence of temperature, NaON, and concentrations of NaBH₄ on the rate of catalytic hydrolysis under isothermal and adiabatic conditions. Finely divided Co/TiO₂ powder was used as the model catalyst. The catalyst preserves its initial activity during 20 cycles, ensuring an NaBH₄ conversion of 94–98%. Activation energies equal to 65.6 and 55 kJ/mole have been determined in the aqueous and aqueous-alkaline solution of NaBH₄ respectively. It has been shown that the standard method of determining activation energy without account of sorption/desorption processes leads to its dependence on the composition of the solution
Author:  V. G. Minkina, S. I. Shabunya, V. I. Kalinin
Keywords:  sodium borohydride, heat-insulated reactor, hydrogen, catalytic hydrolysis
Page:  1820