Shingo Hasegawa

Lattice-Confined Rh Single Atoms in SrTiO3 Enable Leaching-Resistant and Durable Heterogeneous Hydroformylation

Yi Zhang, Xicheng Zhang, Pengzhen Yin, Yudi Wu et autres

Abstract Heterogeneous Rh catalysts hold great promise for olefin hydroformylation by integrating the catalytic efficiency of Rh with facile separation and recycling. However, achieving high catalytic activity together with long-term stability remains a formidable challenge because highly active Rh sites are prone …

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Powdered Silicon as a Reducing Agent for the Hydrodefluorination of Benzotrifluorides

Wenjun QI, 心 千葉, Yusuke Tanimura, S. M. A. Hakim SIDDIKI et autres

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In situ Generation of Fluoride Catalysts for CO 2 ‐to‐Formic Acid Conversion With Silicon Reducing Agent

S. M. A. Hakim Siddiki, Yusuke Tanimura, Mariko Honda, Shingo Hasegawa et autres

ABSTRACT The activation and catalytic reduction of carbon dioxide (CO 2 ) using silicon‐based reducing agents is an important strategy for sustainable C1 chemistry and silicon waste upcycling. Tetraalkylammonium fluoride salts are highly effective promoters of silicon hydride formation; however, their direct …

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Heterogeneous Synergistic Acceleration of Ketone α-Allylation with Allyl Alcohol by Pd/Cu Complexes on Organomodified Mesoporous Silica

Shunichi SAKAI, Shingo Hasegawa, Ken Motokura

High Resolution Image Download MS PowerPoint Slide This study reports the α-allylation of simple ketones and allyl alcohols. Only a few examples of this reaction have been reported to date because the low reactivity of allyl alcohols compared with other allylating agents, …

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Direct Alkylation of Benzenes With Simple Alkanes Promoted by Solid Acids and Supported Pt Nanoparticles Combined System

Moe Takabatake, S. M. A. Hakim Siddiki, Shoichiro Ishikawa, Shingo Hasegawa et autres

ABSTRACT The direct alkylation of benzene with alkanes is a challenging transformation because it requires selective C–C bond formation from inert C–H bonds while suppressing cracking. Here, we demonstrate that a physical mixture of supported Pt nanoparticles and solid acids efficiently catalyzes …

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Effect of immobilized amine structure on the formation and catalysis of Pd nanoparticles for oxidation of alcohols

Shingo Hasegawa, Runa Kobayashi, Mariko Honda, Shinji Tanaka et autres

Silica supports with various types of immobilized amines were systematically prepared and the effect of the amine structures on the formation and catalysis of Pd nanoparticles was studied. Tertiary amino groups were found to be suitable for forming monodisperse and active Pd …

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Conversion of CO2 to Formic Acid Using Silicon Sludge as a Reducing Agent

Jiaqi Wu, Yusuke Tanimura, Danyang Liu, Shingo Hasegawa et autres

Utilizing Si sludge from wafer-production industries for synthesizing value-added chemicals using CO2 facilitates both the recycling of waste Si and the utilization of CO2 as a carbon resource. In this study, the reduction of CO2 to produce formic acid using Si sludge …

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Synergistic catalysis of PtRu oxide cluster for arene C–H bond activation

Shingo Hasegawa, Koji Harano, Ken Motokura

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Seed-mediated solid-phase synthesis of carbon-confined Ni 3 Ga 1 intermetallic nanocubes for highly selective hydrogenation

Yifan Liu, Shiqiang Liu, Xiaoxue Wang, Shingo Hasegawa et autres

Atomically ordered precious intermetallic nanoparticles have garnered significant attention for diverse applications due to their well-defined surface atomic arrangements and exceptional electronic and geometric properties. However, synthesizing non-precious ordered intermetallics that exhibit high stability under operating conditions remains a formidable challenge, primarily …

Direct alkylation of benzene with propane promoted by a hydrotalcite-supported Pt–Fe and solid acid catalyst system

Kenta Suzuki, Shingo Hasegawa, Ken Motokura

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Conversion of CO2 in Exhaust Gas to Formic Acid and Formamides with Wasted Silicon Recovered from End-of-Life Solar Panels

Ken Motokura, Yusuke Tanimura, Takuya Shiroshita, Shingo Hasegawa et autres

High Resolution Image Download MS PowerPoint Slide Recycling end-of-use solar panels faces significant challenges due to the high volume of discarded panels. The recycling of Si wafers recovered from these panels has drawn attention. In this study, we combined the recycling of …

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Recycling of Waste Silicon Wafers for Semihydrogenation of Alkynes

Takuya Shiroshita, Shingo Hasegawa, Yusuke Tanimura, Azusa Kikuchi et autres

The semihydrogenation of alkynes to alkenes without relying on scarce metal resources and high-pressure hydrogen is a valuable strategy from both environmental and safety perspectives. This study explores the use of silicon powder recovered from end-of-life photovoltaic panels in the semihydrogenation of …

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