Explorative Study of Platinum Group Catalysts for Nitric Oxide Conversion to Ammonia

Keisuke KOBAYASHI; Chandan CHAUDHARI; Yuichi MANAKA; Tetsuya NANBA

doi:10.1627/jpi.69.133

Feature articles: Moonshot research & development program, Research Note

Explorative Study of Platinum Group Catalysts for Nitric Oxide Conversion to Ammonia

Keisuke KOBAYASHI, Chandan CHAUDHARI, Yuichi MANAKA, Tetsuya NANBA

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Keywords: Nitric oxide, Ammonia, Platinum group metal, Metal oxide

JOURNAL OPEN ACCESS

2026 Volume 69 Issue 2 Pages 133-138

DOI https://doi.org/10.1627/jpi.69.133

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Abstract

Catalytic activities of platinum metal group catalysts supported on various metal oxides for NO conversion to NH₃ (NO_x-To-Ammonia: NTA) were investigated using the NO–CO–H₂O and NO–H₂ reactions. Pt/TiO₂ exhibited high NTA activity at 200 °C for both reactions. Effects of space velocity on NTA activity of Pt/TiO₂ revealed that NH₃ formation rate for NO–CO–H₂O reaction below 200 °C reached maximum capacity, whereas that for NO–H₂ reaction increased with higher space velocity.

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1.Fund name: New Energy and Industrial Technology Development Organization

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