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Related Concept Videos

Oxidative Cleavage of Alkenes: Ozonolysis01:46

Oxidative Cleavage of Alkenes: Ozonolysis

In ozonolysis, ozone is used to cleave a carbon–carbon double bond to form aldehydes and ketones, or carboxylic acids, depending on the work-up.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.
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Redox Reactions01:24

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Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...
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Redox Reactions

Redox reactions are vital biochemical processes that underpin energy metabolism in cells. These reactions involve the transfer of electrons between molecules, occurring in tandem as oxidation and reduction. Oxidation refers to the loss of electrons, while reduction denotes their gain. This coupling ensures the seamless flow of electrons through metabolic pathways. For example, in bacterial metabolism, glucose undergoes oxidation to carbon dioxide, while oxygen is simultaneously reduced to...
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Oxidation of Phenols to Quinones01:17

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In the presence of oxidizing agents, phenols are oxidized to quinones. Quinones can be easily reduced back to phenols using mild reducing agents. The electron-donating hydroxyl group enhances the reactivity of the aromatic ring, enabling oxidation of the ring even in the absence of an α hydrogen.
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox property is crucial in...

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Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides
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Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides

Published on: May 29, 2018

Oxidic materials: an endless frontier.

John Meurig Thomas1

  • 1Department of Materials Science, University of Cambridge, Pembroke Street, Cambridge, CB2 3QZ, UK. jmt2@cam.ac.uk

Physical Chemistry Chemical Physics : PCCP
|July 2, 2013
PubMed
Summary
This summary is machine-generated.

This overview highlights nanoporous oxides in catalysis for clean technology and green chemistry. It explores oxidic membranes for hydrogen production and photocatalysts for converting light into hydrogen and oxygen.

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Area of Science:

  • Materials Science
  • Catalysis
  • Green Chemistry

Background:

  • Nanoporous oxides are crucial for advancements in catalysis.
  • Clean technology and sustainable chemistry rely on efficient catalytic processes.
  • Oxidic materials offer potential for energy applications, including hydrogen production.

Purpose of the Study:

  • To review the role of nanoporous oxides in heterogeneous catalysis for clean technology and green chemistry.
  • To discuss the potential of oxidic membranes for high-temperature hydrogen production from water.
  • To survey strategies for designing improved oxidic photocatalysts for visible light-driven water splitting.

Main Methods:

  • Literature review of heterogeneous catalysis involving nanoporous oxides.
  • Survey of oxidic membrane technology for hydrogen generation.
  • Analysis of strategies for oxidic photocatalyst design.
  • Overview of physico-chemical characterization techniques for advanced oxidic materials.

Main Results:

  • Nanoporous oxides are key to sustainable catalytic applications.
  • Oxidic membranes show promise for efficient, high-temperature hydrogen production.
  • Strategies for enhancing oxidic photocatalysts for H2 and O2 generation from visible light are identified.
  • Physico-chemical characterization is essential for optimizing oxidic material performance.

Conclusions:

  • Advanced oxidic materials, particularly nanoporous ones, are vital for sustainable catalysis and clean energy.
  • Further research into oxidic membranes and photocatalysts can drive progress in hydrogen production and solar fuel generation.
  • Effective characterization underpins the development of next-generation oxidic materials for environmental applications.