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Radical Substitution: Hydrogenolysis of Alkyl Halides with Tributyltin Hydride01:26

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Radical substitution reactions can be used to remove functional groups from molecules. The hydrogenolysis of alkyl halides is one such reaction, where the weak Sn–H bond in tributyltin hydride reacts with alkyl halides to form alkanes. Here, the reagent Bu3SnH yields tributyltin halide as a byproduct.
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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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Nuclear Fusion

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Catalysis

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The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
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Hydrogen Production and Utilization in a Membrane Reactor
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Hydrogen Production through Catalytic Water Splitting Using Liquid-Phase Plasma over Bismuth Ferrite Catalyst.

Kyong-Hwan Chung1, Hyun-Hak Jung1, Sun-Jae Kim2

  • 1Department of Environmental Engineering, Sunchon National University, Suncheon 57922, Korea.

International Journal of Molecular Sciences
|December 24, 2021
PubMed
Summary

Bismuth ferrite catalyst enhances hydrogen (H2) production via liquid-phase plasma decomposition. This novel catalyst shows superior performance compared to TiO2 due to its broad light absorption.

Keywords:
H2 productionbismuth ferriteliquid-phase plasmaoptical emissionwater splitting

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Area of Science:

  • Materials Science
  • Catalysis
  • Renewable Energy

Background:

  • Hydrogen (H2) production is crucial for clean energy.
  • Liquid-phase plasma offers a novel method for chemical decomposition.
  • Developing efficient catalysts is key to optimizing H2 generation.

Purpose of the Study:

  • To investigate H2 production using a bismuth ferrite catalyst in liquid-phase plasma.
  • To analyze the properties of the bismuth ferrite catalyst.
  • To compare the H2 production efficiency of bismuth ferrite with TiO2.

Main Methods:

  • Bismuth ferrite catalyst synthesized via sol-gel method.
  • Physicochemical and optical properties analyzed.
  • H2 production tested using distilled water and aqueous methanol under liquid-phase plasma irradiation.

Main Results:

  • Bismuth ferrite catalyst exhibits visible-light absorption above 610 nm.
  • The bandgap of bismuth ferrite is approximately 2.0 eV.
  • Bismuth ferrite demonstrated a higher H2 production rate than TiO2.

Conclusions:

  • Bismuth ferrite is an effective catalyst for H2 production in liquid-phase plasma.
  • Its efficiency stems from responding to both UV and visible light emitted by the plasma.
  • This catalyst presents a promising avenue for enhanced hydrogen fuel generation.