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For the extraction of hydrogen from ammonia at low temperatures, we have investigated the Ni-based catalysts fabricated by the thermal decomposition of RNi5 intermetallics (R = Ce or Y). The spinodal-like microstructure formed via phase separation between the Ni catalyst and the resulting oxide supporter was observed to evolve via the low-temperature thermal decomposition of RNi5. The resulting Ni/CeO2 nanocomposite exhibited a superior catalytic activity of ~25% at 400 ℃ for NH3 cracking. The interlocking of Ni nanoparticles with the CeO2 framework was attributed to the high catalytic activity.

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Keyword: アンモニア分解

Conference: 日本セラミックス協会第37回秋季シンポジウム (2024-09-10 - 2024-09-12)

Funding:

• 科研費 KBE443

Manuscript type: Not a journal article

MDR DOI: https://doi.org/10.48505/nims.4756

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Updated at: 2024-09-18 12:30:26 +0900

Published on MDR: 2024-09-18 12:30:26 +0900