Y
Yasuhiro Niwa
Researcher at KEK
Publications - 80
Citations - 1452
Yasuhiro Niwa is an academic researcher from KEK. The author has contributed to research in topics: Catalysis & X-ray absorption fine structure. The author has an hindex of 17, co-authored 66 publications receiving 925 citations. Previous affiliations of Yasuhiro Niwa include Graduate University for Advanced Studies & National Presto Industries.
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Journal ArticleDOI
Ternary intermetallic LaCoSi as a catalyst for N 2 activation
Yutong Gong,Jiazhen Wu,Masaaki Kitano,Junjie Wang,Tian-Nan Ye,Jiang Li,Yasukazu Kobayashi,Kazuhisa Kishida,Hitoshi Abe,Yasuhiro Niwa,Hongsheng Yang,Tomofumi Tada,Hideo Hosono +12 more
TL;DR: In this article, Hosono et al. showed that LaCoSi is an efficient and stable catalyst for N2 activation to produce NH3, which is significantly promoted by shifting the reaction bottleneck from the sluggish N2 dissociation to NH 3 formation.
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Insights into Initial Kinetic Nucleation of Gold Nanocrystals
Tao Yao,Zhihu Sun,Yuanyuan Li,Zhiyun Pan,He Wei,Yi Xie,Masaharu Nomura,Yasuhiro Niwa,Wensheng Yan,Ziyu Wu,Yong Jiang,Qinghua Liu,Shiqiang Wei +12 more
TL;DR: A kinetic three-step mechanism involving the initial nucleation, slow growth, and eventual coalescence for the Au NCs formation is proposed, which may be helpful for the synthesis of metallic nanomaterials.
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Efficient and Stable Ammonia Synthesis by Self-Organized Flat Ru Nanoparticles on Calcium Amide
Yasunori Inoue,Masaaki Kitano,Kazuhisa Kishida,Hitoshi Abe,Hitoshi Abe,Yasuhiro Niwa,Masato Sasase,Yusuke Fujita,Hiroki Ishikawa,Toshiharu Yokoyama,Michikazu Hara,Hideo Hosono +11 more
TL;DR: In this paper, flat-shaped Ru nanoparticles with a narrow distribution (2.1 ± 1.0 nm) and self-organized on Ca(NH2)2 exhibit high catalytic performance far exceeding alkali-promoted Ru-based catalysts in yield and turnover frequency.
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Low-Temperature Synthesis of Perovskite Oxynitride-Hydrides as Ammonia Synthesis Catalysts
Masaaki Kitano,Masaaki Kitano,Jun Kujirai,Kiya Ogasawara,Satoru Matsuishi,Tomofumi Tada,Hitoshi Abe,Yasuhiro Niwa,Hideo Hosono +8 more
TL;DR: It is reported that a novel perovskite oxynitride-hydride, BaCeO3-xNyHz, can be directly synthesized by the reaction of CeO2 with Ba(NH2)2 at low temperatures (300-600 °C).
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Stable single platinum atoms trapped in sub-nanometer cavities in 12CaO·7Al 2 O 3 for chemoselective hydrogenation of nitroarenes
Tian-Nan Ye,Zewen Xiao,Jiang Li,Yutong Gong,Hitoshi Abe,Yasuhiro Niwa,Masato Sasase,Masaaki Kitano,Hideo Hosono +8 more
TL;DR: A nanoporous crystal is reported that can firmly stabilize Pt single atoms in its surface cavities for efficient catalytic hydrogenation of nitroarenes with a much higher turnover frequency than well-studied Pt-based catalysts.