Enhanced Catalytic Ammonia Synthesis with Transformed BaO

Masashi Hattori; Taiyo Mori; Tomohiro Arai; Yasunori Inoue; Masato Sasase; Tomofumi Tada; Masaaki Kitano; Toshiharu Yokoyama; Michikazu Hara; Hideo Hosono

doi:10.1021/acscatal.8b02839

Enhanced Catalytic Ammonia Synthesis with Transformed BaO

Masashi Hattori, Taiyo Mori, Tomohiro Arai, Yasunori Inoue, Masato Sasase, Tomofumi Tada, Masaaki Kitano, Toshiharu Yokoyama, Michikazu Hara, Hideo Hosono

Research output: Contribution to journal › Article

6 Citations (Scopus)

Abstract

We report that a simple mixture of BaO and CaH₂ powders with ruthenium nanoparticles acts as an effective heterogeneous catalyst for low-temperature ammonia synthesis with a very small activation energy (41 kJ mol^-1). The high catalytic performance of this material is not due to either the original CaH₂ or BaO particles but to BaO transformed by reaction with CaH₂. The transformed BaO contains BaH₂, a stable and strong electron-donating material that facilitates a reversible hydrogen storage-release reaction and significantly enhances electron donation to Ru, which results in high catalytic performance.

Original language	English
Pages (from-to)	10977-10984
Number of pages	8
Journal	ACS Catalysis
Volume	8
Issue number	12
DOIs	https://doi.org/10.1021/acscatal.8b02839
Publication status	Published - Dec 7 2018
Externally published	Yes

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All Science Journal Classification (ASJC) codes

Catalysis
Chemistry(all)

Cite this

Hattori, M., Mori, T., Arai, T., Inoue, Y., Sasase, M., Tada, T., ... Hosono, H. (2018). Enhanced Catalytic Ammonia Synthesis with Transformed BaO. ACS Catalysis, 8(12), 10977-10984. https://doi.org/10.1021/acscatal.8b02839

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abstract = "We report that a simple mixture of BaO and CaH2 powders with ruthenium nanoparticles acts as an effective heterogeneous catalyst for low-temperature ammonia synthesis with a very small activation energy (41 kJ mol-1). The high catalytic performance of this material is not due to either the original CaH2 or BaO particles but to BaO transformed by reaction with CaH2. The transformed BaO contains BaH2, a stable and strong electron-donating material that facilitates a reversible hydrogen storage-release reaction and significantly enhances electron donation to Ru, which results in high catalytic performance.",

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AU - Hattori, Masashi

AU - Mori, Taiyo

AU - Arai, Tomohiro

AU - Inoue, Yasunori

AU - Sasase, Masato

AU - Tada, Tomofumi

AU - Kitano, Masaaki

AU - Yokoyama, Toshiharu

AU - Hara, Michikazu

AU - Hosono, Hideo

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AB - We report that a simple mixture of BaO and CaH2 powders with ruthenium nanoparticles acts as an effective heterogeneous catalyst for low-temperature ammonia synthesis with a very small activation energy (41 kJ mol-1). The high catalytic performance of this material is not due to either the original CaH2 or BaO particles but to BaO transformed by reaction with CaH2. The transformed BaO contains BaH2, a stable and strong electron-donating material that facilitates a reversible hydrogen storage-release reaction and significantly enhances electron donation to Ru, which results in high catalytic performance.

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Access to Document

10.1021/acscatal.8b02839