Effect of alumina on the enhancement of hydrogen production and the reduction of hydrogen peroxide in the -radiolysis of pure water and 0.4M H $_{2}$ SO $_{4}$ aqueous solution

Yamada, Reiji; Kumagai, Yuta ; Nagaishi, Ryuji

The H $_{2}$ and H $_{2}$ O $_{2}$ produced by $^{60}$ Co -radiation at room temperature were measured in pure water and 0.4M H $_{2}$ SO $_{4}$ aqueous solution with alumina powder. By increasing the addition of alumina powder, a strong reduction of H $_{2}$ O $_{2}$ concentrations in the solutions was obtained, and the final product H $_{2}$ yields were correspondingly enhanced. These enhancement and reduction effects were diminished in the subsequent -radiation when irradiated alumina powder was used. The effects were reversibly restored by washing the irradiated powder with purified water. In 0.4M H $_{2}$ SO $_{4}$ solution with alumina powder, the H $_{2}$ yields increased by increasing the absorbed dose rate in the region of 1-5 kGy/hr. The radiation-enhanced H $_{2}$ production correlated with the reduction of H $_{2}$ O $_{2}$ concentration could be brought about by the reduction of H $_{2}$ O $_{2}$ molecules and OH radicals in the solutions due to alumina powder.

Language	:	English
Journal	:	International Journal of Hydrogen Energy
Volume	:	36
Number	:	18
Pages	:	p.11646 - 11653
Publication Year/Month	:	2011/09
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Paper URL	:	https://doi.org/10.1016/j.ijhydene.2011.06.073
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Keywords	:	no keyword
Research Facility	:	コバルト60照射施設
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Registration No. : AA20110220
JAEA Abstracts No. : 39001382
Paper Submission No. : 9664

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Effect of alumina on the enhancement of hydrogen production and the reduction of hydrogen peroxide in the -radiolysis of pure water and 0.4M HSO aqueous solution

Effect of alumina on the enhancement of hydrogen production and the reduction of hydrogen peroxide in the -radiolysis of pure water and 0.4M H $_{2}$ SO $_{4}$ aqueous solution