Effect of Calcination and Reduction Temperatures on the Catalytic Activity of Ru/La0.5Ce0.5O1.75 for Ammonia Synthesis under Mild Conditions

Yuta Ogura, Takahiro Asai, Katsutoshi Sato, Shin ichiro Miyahara, Takaaki Toriyama, Tomokazu Yamamoto, Syo Matsumura, Katsutoshi Nagaoka

研究成果: Contribution to journalArticle査読

2 被引用数 (Scopus)


Ammonia is a potential carrier of hydrogen as a zero-emission fuel. Herein, the effects of calcination and reduction temperatures on the ammonia-synthesis activity of Ru/La0.5Ce0.5O1.75 are investigated under mild synthesis conditions (≤400 °C, ≤3 MPa), which are the preferred conditions for the storage of hydrogen as an energy source. The highest catalytic activity is obtained after calcination of the support at 700 °C and reduction of the catalyst at 650 °C. Calcination using a higher temperature than that used for reduction results in the induction of a strong metal–support interaction (SMSI) effect. This high-temperature calcination also provides heat resistance to the support, which prevents sintering of the primary support particles during reduction. Thus, calcination and reduction at temperatures higher than those normally used for the preparation of Ru catalysts provide a novel approach for obtaining supported highly dispersed Ru catalysts exhibiting the SMSI effect and high catalytic activities.

ジャーナルEnergy Technology
出版ステータス出版済み - 6 1 2020

All Science Journal Classification (ASJC) codes

  • Energy(all)

フィンガープリント 「Effect of Calcination and Reduction Temperatures on the Catalytic Activity of Ru/La<sub>0.5</sub>Ce<sub>0.5</sub>O<sub>1.75</sub> for Ammonia Synthesis under Mild Conditions」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。