博士（工学）, 大阪大学, Mar. 2024

固体触媒

水素化反応

ナノ粒子

グリーンケミストリー

不均一系触媒

触媒化学

Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering), Catalyst and resource chemical process

Master's degree program, Graduate School of Chemical Sciences and Engineering

Doctoral (PhD) degree program, Graduate School of Chemical Sciences and Engineering

Mar. 2023, 触媒学会, 第131回触媒討論会 学生講演賞

Mar. 2021, 触媒学会, 第127回触媒討論会 学生ポスター発表賞

Mar. 2017, 旭川工業高等専門学校, 学生表彰（学術振興表彰）

Jan. 2017, "International Conference of "Science of Technology Innovation" 2017 Best Award

Formation of Au–MnOx Interfacial Sites on Au/SiO2 by Manganese Oxide Nanosheet Coating for Enhancement of CO Oxidation Activity
Nayu HAMADA; Akihiro NAKAYAMA; Kosei ARATA; Riku SUZUKI; Norihito SAKAGUCHI; Hiroya ISHIKAWA; Toru MURAYAMA; Tetsuya SHIMADA; Shinsuke TAKAGI; Tamao ISHIDA
Journal of the Japan Petroleum Institute, 69, 5, 269, 276, Japan Petroleum Institute, 01 Sep. 2026, [Peer-reviewed], [International Magazine]
Scientific journal

Anchoring Monolayer TiOx Nanosheets on Gold Nanoparticles Enhances Catalytic Activity for CO Oxidation Depending on the Type of Support
Nayu Hamada; Akihiro Nakayama; Riku Suzuki; Kosei Arata; Norihito Sakaguchi; Hiroya Ishikawa; Toru Murayama; Tetsuya Shimada; Shinsuke Takagi; Tamao Ishida
Chemistry – A European Journal, 24 Aug. 2026, [Peer-reviewed], [International Magazine]
Scientific journal

High‐Dimensional MoOx Promotes Meta‐Stable Mo5+ Active Site Regeneration for Efficient H2O2 Electrosynthesis
Bingxue Cheng; Xiaoqian Bai; Yining Wang; Hiroya Ishikawa; Norihito Sakaguchi; Toru Murayama; Tamao Ishida; Mingyue Lin; Guangli Xiu
ChemSusChem, 14 May 2026, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
Scientific journal

Structural factors of Au₂₅ cluster as precursor to synthesize Au/Nb2O5 for low-temperature CO oxidation
Jiali Hong; Xiaoqian Bai; Xinlin Wang; Hiroya Ishikawa; Toru Murayama; Seiji Yamazoe; Guangli Xiu; Tamao Ishida; Mingyue Lin
Catalysis Today, Nov. 2025, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
English, Scientific journal

Highly Active and Air-Stable Iron Phosphide Catalyst for Reductive Amination of Carbonyl Compounds Enabled by Metal–Support Synergy
Tomohiro Tsuda; Hiroya Ishikawa; Min Sheng; Motoaki Hirayama; Satoshi Suganuma; Ryota Osuga; Kiyotaka Nakajima; Junko Kondo; Sho Yamaguchi; Tomoo Mizugaki; Takato Mitsudome
Journal of the American Chemical Society, Apr. 2025, [Peer-reviewed], [International Magazine]
English, Scientific journal

Computational and experimental insights into single-atom catalysts supported on g-C3N4: Unraveling the superior stability and catalytic activity of Rh in hydroformylation reactions
Roger Monreal-Corona; Lole Jurado; Hiroya Ishikawa; Martí Gimferrer; Albert Poater; Luis F. Bobadilla; M. Rosa Axet; Sergio Posada-Pérez
Applied Surface Science, Apr. 2025, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
Scientific journal

Green synthesis of iron phosphide nanoparticles with high catalytic activity for liquid-phase nitrile hydrogenation
Tomohiro Tsuda; Shintaro Toyoda; Hiroya Ishikawa; Sho Yamaguchi; Tomoo Mizugaki; Takato Mitsudome
Catalysis Science & Technology, 2025, [Peer-reviewed], [International Magazine]
English, Scientific journal, This study introduces a safe and environmentally friendly method for synthesizing iron phosphide nanoparticles, which exhibit approximately twice the catalytic activity of those synthesized from conventional toxic precursors in nitrile hydrogenation.

Colloidal Bimetallic RuNi Particles and their Behaviour in Catalytic Quinoline Hydrogenation
Miquel Cardona‐Farreny; Hiroya Ishikawa; Abolanle Olatilewa Odufejo Ogoe; Sonia Mallet‐Ladeira; Yannick Coppel; Pierre Lecante; Jerome Esvan; Karine Philippot; M. Rosa Axet
ChemPlusChem, Dec. 2024, [Peer-reviewed], ［Internationally co-authored］, [International Magazine]
Scientific journal

Highly Active and Sulfur-Tolerant Ruthenium Phosphide Catalyst for Efficient Reductive Amination of Carbonyl Compounds
Hiroya Ishikawa; Sho Yamaguchi; Tomoo Mizugaki; Takato Mitsudome
ACS Catalysis, 14, 7, American Chemical Society (ACS), Mar. 2024, [Peer-reviewed], [Lead author], [International Magazine]
Scientific journal

Iron phosphide nanocrystals as an air-stable heterogeneous catalyst for liquid-phase nitrile hydrogenation
Tomohiro Tsuda; Min Sheng; Hiroya Ishikawa; Seiji Yamazoe; Jun Yamasaki; Motoaki Hirayama; Sho Yamaguchi; Tomoo Mizugaki; Takato Mitsudome
Nature Communications, Sep. 2023, [Peer-reviewed], [International Magazine]
English, Scientific journal, AbstractIron-based heterogeneous catalysts are ideal metal catalysts owing to their abundance and low-toxicity. However, conventional iron nanoparticle catalysts exhibit extremely low activity in liquid-phase reactions and lack air stability. Previous attempts to encapsulate iron nanoparticles in shell materials toward air stability improvement were offset by the low activity of the iron nanoparticles. To overcome the trade-off between activity and stability in conventional iron nanoparticle catalysts, we developed air-stable iron phosphide nanocrystal catalysts. The iron phosphide nanocrystal exhibits high activity for liquid-phase nitrile hydrogenation, whereas the conventional iron nanoparticles demonstrate no activity. Furthermore, the air stability of the iron phosphide nanocrystal allows facile immobilization on appropriate supports, wherein TiO2 enhances the activity. The resulting TiO2-supported iron phosphide nanocrystal successfully converts various nitriles to primary amines and demonstrates high reusability. The development of air-stable and active iron phosphide nanocrystal catalysts significantly expands the application scope of iron catalysts.

Robust Ruthenium Phosphide Catalyst for Hydrogenation of Sulfur-Containing Nitroarenes
Hiroya Ishikawa; Naoki Nakatani; Sho Yamaguchi; Tomoo Mizugaki; Takato Mitsudome
ACS Catalysis, Apr. 2023, [Peer-reviewed], [Lead author], [International Magazine]
English, Scientific journal

Phosphorus-Alloying as a Powerful Method for Designing Highly Active and Durable Metal Nanoparticle Catalysts for the Deoxygenation of Sulfoxides: Ligand and Ensemble Effects of Phosphorus
Hiroya Ishikawa; Sho Yamaguchi; Ayako Nakata; Kiyotaka Nakajima; Seiji Yamazoe; Jun Yamasaki; Tomoo Mizugaki; Takato Mitsudome
JACS Au, Feb. 2022, [Peer-reviewed], [Lead author], [International Magazine]
English, Scientific journal

Air-Stable and Reusable Cobalt Phosphide Nanoalloy Catalyst for Selective Hydrogenation of Furfural Derivatives
Hiroya Ishikawa; Min Sheng; Ayako Nakata; Kiyotaka Nakajima; Seiji Yamazoe; Jun Yamasaki; Sho Yamaguchi; Tomoo Mizugaki; Takato Mitsudome
ACS Catalysis, Jan. 2021, [Peer-reviewed], [Lead author], [International Magazine]
English, Scientific journal

Electrochemical Detection of Free Chlorine Using Ni Metal Nanoparticles Combined with Multilayered Graphene Nanoshells
Fumihiro Kodera; Ryou Saito; Hiroya Ishikawa; Akihiko Miyakoshi; Minoru Umeda
Electroanalysis, Jul. 2019, [Peer-reviewed], [International Magazine]
English, Scientific journal, AbstractAn electrochemical detection of free chlorine using carbon‐metal (C−M) composite powder, with a nickel‐metal nanoparticle combined with a multilayered graphene nanoshell (Ni metal@multilayered graphene) as the main component, synthesized from CH4 via multimode microwave‐assisted catalytic decomposition, was studied. Morphological analysis of the C−M composite powder was performed by TEM–EDX and Raman spectroscopy. The C−M composite powder was packed in a porous microelectrode (PME), and its electrochemical activity with respect to free chlorine was evaluated using a potential sweep method. The C−M composite powder exhibited a sufficient activity against free chlorine. A current based on the reduction of free chlorine was observed in the potential < around+0.3 V vs. Ag/AgCl. A linear relationship was observed between the current and the concentration.

固体触媒による位置選択的ヒドロホルミル化反応
石川 浩也, 触媒（Catalysts and Catalysis）, 68, 4, Aug. 2026, [Invited], [Domestic magazines]

Reductive Amination of Aldehydes and Ketones with an Fe2P NC/ZrO2 Catalyst under Mixed H2 and NH3 Gas
Synfacts, 22, 07, 644, 644, 25 Jun. 2026
Georg Thieme Verlag KG

硬Ｘ線光電子分光法を用いた金属リン化物ナノ粒子の価電子領域における電子状態と触媒活性の相関解明
石川 浩也; 水垣 共雄; 満留 敬人, SPring-8/SACLA利用研究成果集, 14, 1, 27, 30, Feb. 2026, [Peer-reviewed], [Lead author]

Sulfur-Tolerant Reductive Amination by Ruthenium Phosphide Nanoparticles Supported on Carbon
Synfacts, 20, 07, 0737, 0737, 14 Jun. 2024
Georg Thieme Verlag KG

Ruthenium Phosphide Nanoparticles Supported on SiO2 for Hydrogenation of Sulfur-Containing Nitroarenes
Synfacts, 19, 07, 0705, 0705, 16 Jun. 2023
Georg Thieme Verlag KG

貴金属触媒の活性・硫黄耐性の大幅向上に成功
石川 浩也, Chem-Station スポットライトリサーチ, Feb. 2022, [Invited]

Supported Cobalt Phosphide Nanoalloy Catalysts for Hydrogenation of Furfurals
Synfacts, 17, 04, 0432, 0432, 18 Mar. 2021
Georg Thieme Verlag KG

Oxygen Reduction Reaction at Carbon-Based Particles Prepared by Microwave-Assisted Catalytic Decomposition Measured in Acetonitrile
Fumihiro Kodera; Narumi Yoshida; Hiroya Ishikawa; Ryo Saito; Shogo Nakagawa; Akihiko Miyakoshi; Minoru Umeda, ECS Transactions, 75, 14, 859, 862, 22 Aug. 2016
New carbon-based particles prepared using methane by microwave-assisted catalytic decomposition has been developed. The carbon-based particles contained a nanographene-covered nickel, carbon nanotube, and others. In non-aqueous solvent, an oxygen reduction reaction (ORR) at the carbon-based particles treated with acidic solution in advance was evaluated by a porous microelectrode based on electrochemical methods. The ORR was compared to commercially available carbon fiber, polycrystalline platinum, and polycrystalline gold microelectrode., The Electrochemical Society

Development of Robust Rh Single-Atom Catalysts for Hydroformylation by Heteroatom-Doping into Carbon Nitride Supports
Hiroya Ishikawa; Lole Jurado; Yannick Coppel; Ligia Amelia Luque; Álvarez; Luis Francisco Bobadilla; Pardis Simon; M. Rosa Axe
The 10th Tokyo Conference on Advanced Catalytic Science and Technology (TOCAT-10), Aug. 2026, English, Oral presentation

〔主要な業績〕効率的な還元的有機分子変換を実現する高機能ナノ粒子・単原子触媒の開発
石川 浩也
2025年度 触媒学会北海道支部 苫小牧講演会, Nov. 2025
[Invited]

Highly Active and Sulfur-tolerant Ruthenium Phosphide Catalyst for Hydrogenation of Nitroarenes
Hiroya Ishikawa; Sho Yamaguchi; Takato Mitsudome; Tomoo Mizugaki
The 9th Asia Pacific Congress in Catalysis (APCAT-9), Nov. 2023, Oral presentation

高い水素化能および耐硫黄性を示すリン化ル テニウム触媒による芳香族ニトロ化合物の高選択的水素化反応
石川 浩也; 山口 渉; 満留 敬人; 水垣 共雄
第131回触媒討論会, Mar. 2023, Oral presentation

Highly Active and Durable Ruthenium Phosphide Nanoparticle Catalyst for Deoxygenation of Sulfoxides
Hiroya Ishikawa; Sho Yamaguchi; Takato Mitsudome; Tomoo Mizugaki
The 9th Tokyo Conference on Advanced Catalytic Science and Technology (TOCAT9), Jul. 2022, Oral presentation

リン化ルテニウム触媒によるスルホキシドの 脱酸素反応―リン化による触媒活性及び耐久性の向上―
石川 浩也; 山口 渉; 満留 敬人; 水垣 共雄
第128回触媒討論会, Sep. 2021, Oral presentation

高機能性リン化コバルト触媒によるバイ オマス由来アルデヒドの有用アルコールへの変換反応
石川 浩也; 盛 敏; 山口 渉; 満留 敬人; 水垣 共雄
第 10 回 JACI/GSC シンポジウ ム, Jun. 2021, Poster presentation

大気中で安定なリン化コバルト触媒によ るフルフラール誘導体の高選択的水素化反応
石川 浩也; 盛 敏; 山口 渉; 満留 敬人; 水垣 共雄
第 127 回触媒討論会, Mar. 2021, Poster presentation

Cobalt Phosphide Nanorod as an Air-Stable Catalyst for Hydrogenation of Furfural Derivatives
Hiroya Ishikawa; Min Sheng; Takato Mitsudome; Tomoo Mizugaki
The 8th Asia-Pacific Congress in Catalysis (APCAT-8), Aug. 2019

マイクロ波メタン分解に より生じる機能性炭素粉粒体の分離精製に関する検討
石川 浩也; 吉田 生朱; 石丸裕也; 梅田 実; 宮越 昭彦; 小寺 史浩
電気化学会第84回大会, Mar. 2017, Poster presentation

塩素エネルギー変換を指向したハイドロダイナミック 法による電極反応解析
石川 浩也; 吉田 生朱; 小寺 史浩
化学系学協会北海道支部2017年冬季研究発表会, Jan. 2017, Oral presentation

Investigations into Properties of New Functional Carbon Particles for Application in Electrochemical Energy Conversion
Hiroya Ishikawa; Narumi Yoshida; Akihiko Miyakoshi; Minoru Umeda; Fumihiro Kodera
International Conference of "Science of Technology Innovation" 2017, Jan. 2017, Poster presentation

塩素資源の有効活用を指向した電気化学エネルギー変 換―多孔質マイクロ電極法による反応計測
石川 浩也; 吉田 生朱; 小寺 史浩
電気化学会北海道支部・東海支部合同シン ポジウム, Nov. 2016, Poster presentation

グラファイト状窒化炭素との複合化による⾼電⼦密度⾦属ナノ粒⼦触媒の開発と⾼難度選択的⽔素化反応への応⽤
研究助成
Apr. 2026 - Mar. 2028
公益財団法人 池谷科学技術振興財団, Principal investigator

高難度選択的水素化反応を実現する協奏機能シングルアトム触媒の開発
科学研究費助成事業
Apr. 2026 - Mar. 2028
石川 浩也
日本学術振興会, 若手研究, 北海道大学, Principal investigator, Competitive research funding, 26K17704

均一系触媒の設計指針を応用した新規水素化用固体触媒の創製
ノーステック財団 研究開発助成事業
Aug. 2025 - Mar. 2026
公益財団法人 北海道科学技術総合振興センター, 若手研究人材・ネットワーク育成補助金（タレント補助金）, 北海道大学触媒科学研究所, Principal investigator

持続可能な医薬品合成プロセスの構築を目指した金属－リン合金ナノ粒子触媒の開発
科学研究費助成事業
Apr. 2023 - Mar. 2025
石川 浩也
本研究では、持続可能な医薬品合成プロセスの構築を目指し、硫黄原子を含む有機化合物の変換反応を高効率で促進させる金属リン化物ナノ粒子触媒の開発を行っている。以下、一年目の主要な研究実績について概説する。
1.硫黄含有芳香族ニトロ化合物の水素化反応を促進するリン化ルテニウム触媒の開発
本研究では、種々の貴金属リン化物ナノ粒子を調製し、硫黄含有芳香族ニトロ化合物の水素化反応にて触媒活性を評価した。その結果、シリカ上に担持したリン化ルテニウムナノ粒子（Ru2P/SiO2）が常圧水素下という温和な条件で高い活性、選択性を示した。ニトロ基の水素化反応において、Ru2P/SiO2は典型的なRu触媒（Ru/SiO2）よりも34倍高い活性を示した。本触媒を用いることにより、医薬中間体を含む様々な硫黄含有アニリン類を高収率で得ることができた。触媒のキャラクタリゼーション、反応経路の解析、対照実験、DFT計算により、Ru原子からP原子への電子移動（リガンド効果）およびRu－P結合の形成による触媒表面での原子配列の変化（アンサンブル効果）が、Ru2P/SiO2の高い活性、耐硫黄性の発現に寄与していることを示した。
2.カルボニル化合物の還元的アミノ化反応を促進するリン化ルテニウム触媒の開発
本研究では、活性炭素上に担持したリン化ルテニウムナノ粒子（Ru2P/C）が、H2を還元剤、NH3を窒素源とするカルボニル化合物の還元的アミノ化に高い活性、選択性を示すことを見出した。本触媒は常圧のH2/NH3混合ガス下でも反応を促進することが可能であった。また、本触媒は硫黄含有カルボニル化合物を基質とした反応においても、効率的に反応を促進した。触媒のキャラクタリゼーション、速度論解析、対照実験から、Ru2P/Cの酸性質と高い水素活性化能が本触媒の高い活性に寄与していることを明らかにした。
日本学術振興会, 特別研究員奨励費, 大阪大学, Competitive research funding, 23KJ1484

特開2025-112188 特願2024-006344 還元的アミノ化触媒
Patent right, 八木 魁人; 今仲 庸介; 上野 晋司; 満留 敬人; 石川 浩也
特願2024-006344

特開2023-016704 特願2022-098351 水素化触媒および水素化化合物の製造方法
Patent right, 満留 敬人; 石川 浩也; 上野 晋司; 今仲 庸介; 酒井 寿彦
特願2022-098351

触媒学会若手会「第46回夏の研修会」幹事補佐
05 Aug. 2026 - 07 Aug. 2026
Planning etc
Academic society etc
触媒学会若手会

石油学会北海道支部 第14回実践的石油学講習 世話人
04 Sep. 2025 - 04 Sep. 2025
Planning etc

Alloying Amps Up Catalyst Activity
09 Mar. 2022
CHEMICAL PROCESSING
[Paper]

硫黄成分への耐性向上 リン化で活性10倍
17 Jan. 2022
日刊工業新聞
[Paper]