[1C01-05] Treatment of Radiolysis Gas 1

[1C03] R&D on reduction technologies of hydrogen generated in long-term waste storage containers

(9) Development of geopolymer based catalyst for passive autocatalytic recombiner and performance tests

*Taro Utsumi¹, Dung Thi Mai Do¹, Hisayuki Suematsu¹, Kudo Isamu², Hirohisa Tanaka³, Ryutaro Hino⁴ (1. Nagaoka Univ. of Tech., 2. ADVAN ENG, 3. Kwansei Gakuin Univ., 4. JAEA)

Keywords:Hydrogen recombination catalyst, Geopolymer, Radioactive waste

Passive autocatalytic recombiners of porous geopolymer with platinum particles were prepared. In 5% H₂+5%O₂+90%Ar gas flow, (1) porous geopolymer shows superior recombination characteristics and (2) more than 80% of H₂ was recombined at 60-80 ^oC.