Influence of TiO2 on the Efficiency of Low–Temperature Generation of H2 from Solid–Phase Compositions Based on NH3BH3
N. L. Kayl, O. V. Komova, O. V. Netskina, G. V. Odegova, A. M. Ozerova and V. I. Simagina
Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Pr. Akademika Lavrentyeva 5, Novosibirsk 630090 (Russia)
Keywords: amminborane, titanium dioxide, thermolysis, hydrothermolysis, water adsorption
Abstract
Low-temperautre hydrogen generation from solid-phase compositions based on amminborane (NH3BH3) and TiO2 under external heating to 80 °C depending on the physicochemical properties of titanium dioxide, its content in the composition and the amount of adsorbed water was studied. It was established that the maximal yield and rate of hydrogen formation are achieved for the system prepared on the basis of fine titanium dioxide witht eh participation of adsorbed water. It is assumed that an increase in the efficiency of hydrogen obtaining from the composition in comparison with initial hydride is due to a conjugation of the exothermal process of amminborane hydrolysis with its dehydrogenation (thermolysis).
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