[1B05-1B07] Environmental chemistry(2)

10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)Japanese

[1B05] Nitrogen oxides reduction using high entropy alloy core-shell catalysts

○Ryota Hirasawa¹, Naoki Hashimoto¹, Kohsuke Mori¹, Hiromi Yamashita¹ (1. Osaka Univ.)

Keywords:

High entropy alloy,Heterogeneous catalyst,exhaust gas prification

High entropy alloy (HEA) nanoparticles, which contain five or more principal elements, have been attracted much attention as fascinating nanocatalysts due to their unique properties. In this study, a simultaneous reduction based on the hydrogen spillover on reducible CeO₂ nanorod was used to synthesize CoNiCuZnRh HEA catalysts, which was further transformed into CoNiCuZnRh@Rh core-shell type structure by galvanic replacement. This surface composition-controlled HEA exhibited higher NO reduction activity than monometallic Rh catalyst.