[1O08-13] Reduction Technologies of Radiolysis Gas

[1O09] R&D on reduction technologies of hydrogen generated in long-term waste storage containers

(2)Development of Monolithic Catalysts for Hydrogen-Oxygen Recombination

*Keisuke Takenaka¹, Hitomi Ono¹, Junya Sakai¹, Masashi Taniguti³, Ryutaro Hino², Yasuo Nishihata², Daiju Matsumura², Ernst Arndt Reinecke⁴, Hirohisa Tanaka¹ (1. Kwansei Gakuin Univ., 2. Japan Atomic Energy Agency, 3. Daihatsu Motor Co., Ltd., 4. Forschungszentrum Juelich)

Keywords:catalyst, monolith, hydrogen, recombination, cell density, natural convection

As part of R&D towards the decommissioning reactor of Fukushima Daiichi Nuclear Power Station, we have developed highly reactive monolithic catalysts for hydrogen-oxygen recombination. It was clarified, from real scale REKO4 reactor (5.5 m³) experimental in JÜLICH, that natural convection velocity can be greatly improved by optimizing the catalytic geometries.