Hokkaido University · Physics and Astronomy
Professor Kiyotaka Asakura's research lab specializes in heterogeneous catalysis and advanced materials for sustainable energy and chemical processes. The lab focuses on designing and characterizing nanostructured catalysts—particularly bimetallic systems like Cu-Au and Rh-based clusters—for selective hydrogenation and hydroformylation reactions. Using in situ spectroscopic techniques such as EXAFS and FT-IR, the group investigates the dynamic structural and electronic changes of active sites under reaction conditions, aiming to understand and control catalytic mechanisms at the atomic level. Their work bridges fundamental surface science with practical applications in green chemistry and energy conversion.
Figures are computed from collected data and may differ slightly.
The performance of an SBA-15-supported Cu catalyst for hydrogenation of dimethyl oxalate to ethylene glycol is markedly promoted with Au. A key genesis of the high activity of the catalyst is ascribed to the formation of Cu–Au alloy nanoparticles which stabilize the active species and retard their agglomeration during the hydrogenation process.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetal-assisted hydroformylation on a SiO2-attached rhodium dimer. In situ EXAFS and FT-IR observations of the dynamic behaviors of the dimer siteKiyotaka Asakura, Kyoko Kitamura-Bando, Yasuhiro Iwasawa, Hironori Arakawa, and Kiyoshi IsobeCite this: J. Am. Chem. Soc. 1990, 112, 25, 9096–9104Publication Date (Print):December 1, 1990Publication History Published online1 May 2002Published inissue 1 December 1990https://pubs.acs.org/doi/10.1021/ja00181a010h
ABSTRACT In the late stages of nuclear burning for massive stars ( M > 8 M ⊙ ), the production of neutrino–antineutrino pairs through various processes becomes the dominant stellar cooling mechanism. As the star evolves, the energy of these neutrinos increases and in the days preceding the supernova a significant fraction of emitted electron anti-neutrinos exceeds the energy threshold for inverse beta decay on free hydrogen. This is the golden channel for liquid scintillator detectors because
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