Oxidation of Ru/Ce0.5Zr0.5O2–x at Ambient Temperature as a Trigger for Carbon-Free H2 Production by Ammonia Oxidative Decomposition

• DOI: 10.1021/acssuschemeng.0c04126
• Publication Date: 2020-07-31T17:19:27Z
• Authors: Takahiro Matsunaga; Suguru Matsumoto; Ryo Tasaki; Yuta Ogura; Takaaki Eboshi; Yuma Takeishi; Kyoko Honda; Katsutoshi Sato; Katsutoshi Nagaoka
• Keywords: Exothermic reaction; Ammonia production

Ammonia has received attention as a hydrogen carrier for energy use, and although ammonia decomposition can produce at high rate, there is currently no simple process decomposing that easily rapidly initiated any time without an input of external energy. Here, we report the discovery initiating sustaining production from heating catalyst externally. The oxidative to rate was repeatedly triggered ambient temperature (∼25 °C) immediately after NH3 O2 were supplied Ru/Ce0.5Zr0.5O2 had been previously reduced temperature. For this catalyst, active atoms formed on Ru0 nanoparticles Ce0.5Zr0.5O2 even temperature, very exothermic oxidation Ce0.5Zr0.5O2–x well heated bed catalytic auto-ignition combustion, which lowered by contribution mobile (active) oxygen over Ce0.5Zr0.5O2. Oxidative thereby triggered.