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Affiliation |
IWATE University Faculty of Science and Engineering Department of Science and Engineering Chemistry Course |
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Position |
Professor |
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Homepage URL |
http://www.chem.iwate-u.ac.jp/labo_web/inorg_reaction/top.html |
SHIRAI MASAYUKI
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Degree 【 display / non-display 】
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The University of Tokyo - Ph.D 1993.03.29
Campus Career 【 display / non-display 】
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2016.04-Now
IWATE University Faculty of Science and Engineering Professor [Duty]
Course Subject 【 display / non-display 】
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2018
Information for Chemistry and Bioengineering
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2018
Chemistry and Bioengineering Seminar
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2018
Advanced Training
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2018
Advanced Research
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2018
Advanced Surface Chemistry
Published Papers 【 display / non-display 】
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EXAFS and TEM Study of Pt?Pd Bimetallic Particles on Graphite Powder Used for Guaiacol Hydrogenation in High-Temperature Aqueous Ethanol Solution
H. Hayashi, K. Taniguchi, and M.Shirai
Applied Catalysis A: General ( Elsevier ) 709 120620 2025.10 [Refereed]
Academic Journal Multiple authorship
Catalytic production of chemical feedstocks solely from woody biomass-derived materials is valuable for sustainable chemical manufacturing. In this study, we investigated the aromatic ring hydrogenation of guaiacol (omethoxyphenol), a lignin-derived compound, to 2-methoxycyclohexanone (NONE) and cis- and trans-2 methoxycyclohexanol (NOLs) over graphite-supported platinum (Pt/G), palladium (Pd/G), and platinum palladium (Pt–Pd/G) catalysts in aqueous ethanol solution, which can be obtained from bioethanol, without using external hydrogen gas. The 1Pt–1 Pd/G catalyst (1 wt% Pt and 1 wt% Pd loaded on graphite, Pt: Pd molar ratio = 1: 2) afforded a 41 % yield of aromatic ring-hydrogenated products (NONE + NOLs) after 60 min in aqueous ethanol (water: ethanol = 1 mL: 2 mL) at 573 K. This high catalytic performance was attributed to the presence of highly dispersed alloy particles (1–4 nm, average 2.6 nm) with a platinum-core/palladium-shell structure, as revealed by TEM and EXAFS analyses.
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Molybdenum disulfide nanosheets intercalated between graphite layers
K. San-yoshi, T. Sasaki, T. Kubota, N. Sakaguchi, and M.Shirai
Chemical Communications 61 14358 - 14361 2025.09 [Refereed]
Academic Journal Multiple authorship
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Low-temperature modified-immersion molten ZnCl2-carbonization and activation for continuous production of mesoporous carbon from plastic waste
T.Waiyaka, R.Nganglumpoon, C. Rajrujithong, W. Tolek, P. V. Chai, M. Shirai, A. Wuttitrairat, P. Kittisupakorne and J. Panpranot
Green Chemistry ( Royal Society of Chemistry ) 25 14061 - 14075 2025.09 [Refereed]
Academic Journal Multiple authorship
Plastic waste pollution has emerged as a critical global issue, threatening ecosystems, human health, and sustainable economic development. Molten salt carbonization and activation (MSCA) presents a promising pathway for converting plastic waste into valuable carbon materials. However, conventional MSCA approaches face challenges such as premature degradation of carbon sources before salt melting, undesirable side reactions that lower the specific surface area, and limited potential for industrial scalability. In this study, we introduce a prototype of a continuous MSCA system employing a modified-immersion zinc chloride (ZnCl2) molten salt system at a relatively low temperature of 350 °C to convert common plastic waste including polypropylene (PP) bowls, polylactic acid (PLA) cups, and polyethylene terephthalate (PET) bottles into high-surface-area mesoporous carbon. The type of plastic waste and the ZnCl2-to-PET mass ratio significantly influence the formation of mesoporous structures and the development of defect sites within the graphitic carbon matrix. Among all tested samples, MSW-PET-10 (derived from a 10 : 1 ZnCl2-to-PET ratio) exhibited the highest specific surface area of 976 m2 g−1 and a pore volume of 0.95 cm3 g−1. The resulting mesoporous carbon derived from plastic waste demonstrates excellent electrochemical performance as a supercapacitor electrode material, highlighting its potential for energy storage applications and sustainable waste management. Life cycle assessment (LCA) of the process revealed that its environmental footprint regarding this study can be reduced by about 37.3% compared to the conventional MSCA mixing method.
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Conversion of benzyl phenyl ether to monoaromatics in high-temperature aqueous ethanol solution under high-pressure carbon dioxide
K. Taniguchi, E. N. Kusumawati, H. Nanao, C. V. Rode, O. Sato, A. Yamaguchi, M.Shirai
New Journal of Chemistry ( Royal Society of Chemistry ) 47 12561 - 12569 2023.05 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
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Effect of Pt/Co Ratio of Pt-Co Nanoparticles on Ionic Liquid-Modified SBA-15 for Selective Hydrogenation of Cinnamaldehyde
Etty N. Kusumawati, Takehiko Sasaki, Masayuki Shirai
ACS Applied Nano Materials ( American Chyemical Society ) 7 19259 - 19267 2024.08 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
Presentations 【 display / non-display 】
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Hydrolysis of nylon-6 to ε-caprolactam in high-temperature liquid water
Poster (General)
2024.09 -
Hydrogenation of Guaiacol over Graphite-supported Platinum-Palladium Bimetal Catalysts in Aqueous Ethanol Solution
Poster (General)
2024.09 -
Cobalt nanometal particles intercalated between graphite layers
Poster (General)
2024.09 -
Molybdenum sulfide intercalated between graphite layers
Poster (General)
2024.09 -
Solvolysis of aryl ether compounds in high-temperature methanol solution under high-pressure carbon dioxide
Poster (General)
2021.12
Academic Awards Received 【 display / non-display 】
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2023.09.12
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2001.09.14
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2025.11.27
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2024.12.21
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2024.11.27