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Reduction of Alkenes: Catalytic Hydrogenation02:13

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Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
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Unlike the easy catalytic hydrogenation of an alkene double bond, hydrogenation of a benzene double bond under similar reaction conditions does not take place easily. For example, in the reduction of stilbene, the benzene ring remains unaffected while the alkene bond gets reduced. Hydrogenation of an alkene double bond is exothermic and a favorable process. In contrast, to hydrogenate the first unsaturated bond of benzene, an energy input is needed; that is, the process is endothermic. This is...
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Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

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Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
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Introduction
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Hydrogen bonds are weak attractions between atoms that have formed other chemical bonds. One of these atoms is electronegative, like oxygen, and has a partial negative charge. The other is a hydrogen atom that has bonded with another electronegative atom and has a partial positive charge.
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A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
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Fullerene: A Potential Platform for Hydrogen Evolution Reaction.

Ao Yu1, Qi Huang1, Wenhao Yang1

  • 1State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, P. R. China.

Chemsuschem
|September 2, 2025
PubMed
Summary
This summary is machine-generated.

Fullerenes show great promise as electrocatalysts for hydrogen evolution reactions (HER) in water splitting. Their unique structure enables efficient hydrogen production and broad catalytic applications.

Keywords:
electrocatalysiselectronic modulationfullerenehydrogen evolution reaction

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Hydrogen energy is a clean alternative to fossil fuels, with high energy density and environmental compatibility.
  • Electrochemical water splitting is a key technology for large-scale hydrogen production.
  • Efficient hydrogen evolution reaction (HER) catalysts are crucial for this process.

Purpose of the Study:

  • To summarize recent advancements in fullerene-based electrocatalysts for HER.
  • To highlight the dual role of fullerenes in catalyst synthesis and electronic modulation.
  • To explore new applications for fullerene electrocatalysts.

Main Methods:

  • Utilizing fullerenes as templates for synthesizing atomically dispersed, subnanometer metal clusters.
  • Leveraging the electronic properties of fullerenes to modulate catalytic interfaces.
  • Investigating the catalytic activity and stability of fullerene-based electrocatalysts for HER.

Main Results:

  • Fullerenes demonstrate exceptional catalytic activity and stability for HER.
  • Fullerenes act as effective templates for creating highly dispersed metal catalysts.
  • The electronic modulation by fullerenes enhances catalytic performance.

Conclusions:

  • Fullerene-based electrocatalysts offer a promising pathway for efficient hydrogen production.
  • These catalysts exhibit enhanced HER efficiency and stability.
  • Fullerenes open new avenues for catalytic transformations beyond HER.