A study has been made of the influence 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.
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 96, No. 7, pp. 1853–1860, November–December, 2023.
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Minkina, V.G., Shabunya, S.I. & Kalinin, V.I. Catalytic Hydrolysis of Sodium Borohydride. J Eng Phys Thermophy 96, 1820–1827 (2023). https://doi.org/10.1007/s10891-023-02851-5
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DOI: https://doi.org/10.1007/s10891-023-02851-5