The important role of N2H formation energy for low-temperature ammonia synthesis in an electric field

Kota Murakami; Yuta Tanaka; Ryuya Sakai; Kenta Toko; Kazuharu Ito; Atsushi Ishikawa; Takuma Higo; Tomohiro Yabe; Shuhei Ogo; Masatoshi Ikeda; Hideaki Tsuneki; Hiromi Nakai; Yasushi Sekine

doi:10.1016/j.cattod.2018.10.055

The important role of N₂H formation energy for low-temperature ammonia synthesis in an electric field

Kota Murakami, Yuta Tanaka, Ryuya Sakai, Kenta Toko, Kazuharu Ito, Atsushi Ishikawa, Takuma Higo, Tomohiro Yabe, Shuhei Ogo, Masatoshi Ikeda, Hideaki Tsuneki, Hiromi Nakai, Yasushi Sekine^*

^*この研究の対応する著者

研究成果: Article › 査読

30 被引用数 (Scopus)

抄録

Development of a highly efficient ammonia synthesis process is desirable for achieving a sustainable society. Regarding conventional heterogeneous catalysts, Ru-supported catalyst exhibits higher turn-over frequency (TOF) than Fe-supported or Ni-supported catalysts. However, we found that Fe-supported and Ni-supported catalysts show higher TOF than Ru-supported catalyst in an electric field at the low temperature of 373 K. Density functional theory (DFT) calculations revealed that N₂ dissociation through the “associative mechanism” plays a key role in the electric field. The ammonia synthesis activity in the electric field is determined by the N₂H formation energy at the metal-support interface.

本文言語	English
ページ（範囲）	119-124
ページ数	6
ジャーナル	Catalysis Today
巻	351
DOI	https://doi.org/10.1016/j.cattod.2018.10.055
出版ステータス	Published - 2020 7月 1

ASJC Scopus subject areas

触媒
化学一般

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10.1016/j.cattod.2018.10.055

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引用スタイル

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abstract = "Development of a highly efficient ammonia synthesis process is desirable for achieving a sustainable society. Regarding conventional heterogeneous catalysts, Ru-supported catalyst exhibits higher turn-over frequency (TOF) than Fe-supported or Ni-supported catalysts. However, we found that Fe-supported and Ni-supported catalysts show higher TOF than Ru-supported catalyst in an electric field at the low temperature of 373 K. Density functional theory (DFT) calculations revealed that N2 dissociation through the “associative mechanism” plays a key role in the electric field. The ammonia synthesis activity in the electric field is determined by the N2H formation energy at the metal-support interface.",

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AU - Murakami, Kota

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AU - Sakai, Ryuya

AU - Toko, Kenta

AU - Ito, Kazuharu

AU - Ishikawa, Atsushi

AU - Higo, Takuma

AU - Yabe, Tomohiro

AU - Ogo, Shuhei

AU - Ikeda, Masatoshi

AU - Tsuneki, Hideaki

AU - Nakai, Hiromi

AU - Sekine, Yasushi

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