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Related Concept Videos

Heterogeneous Catalysis01:22

Heterogeneous Catalysis

Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...
Catalysis02:50

Catalysis

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.
Catalysis01:27

Catalysis

Catalysis influences the rate of chemical reactions by providing an alternative reaction pathway with lower activation energy. A catalyst speeds up a reaction, but it is not consumed during the process. The fundamental principle of catalysis is the ability of a catalyst to alter the reaction mechanism, often introducing a more efficient pathway than the uncatalyzed process.In a catalyzed reaction, the catalyst participates directly in the reaction mechanism. It interacts with reactants to form...
Microbial Corrosion01:24

Microbial Corrosion

Microbiologically Influenced Corrosion (MIC) is a significant form of material degradation caused by the metabolic activities of microorganisms. This phenomenon poses substantial challenges across various industries, including oil and gas, maritime, and water treatment sectors.MIC occurs when microorganisms, such as bacteria, archaea, and fungi, colonize metal surfaces, forming biofilms that alter the local electrochemical environment. These biofilms can lead to the production of corrosive...

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Related Experiment Video

Updated: Jun 25, 2026

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
08:40

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

Advanced materials for environmental catalysts.

Nobuhito Imanaka1, Toshiyuki Masui

  • 1Department of Applied Chemistry, Faculty of Engineering, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan. imanaka@chem.eng.osaka-u.ac.jp

Chemical Record (New York, N.Y.)
|February 27, 2009
PubMed
Summary

New environmental catalysts were designed using solid-state chemistry principles for efficient decomposition of volatile organic compounds and nitrogen oxides, showing improved performance over conventional materials.

Area of Science:

  • Materials Science
  • Environmental Chemistry
  • Solid-State Chemistry

Background:

  • Conventional environmental catalysts face limitations in efficiency and scope.
  • There is a growing need for advanced catalytic materials to address air pollution from volatile organic compounds (VOCs) and nitrogen oxides (NOx).

Purpose of the Study:

  • To design and synthesize novel environmental catalysts based on solid-state chemistry and ionics principles.
  • To develop efficient catalysts for the complete oxidation of ethylene and the direct decomposition of nitrogen monoxide (NO).

Main Methods:

  • Citrate sol-gel method for preparing cerium oxide-zirconium oxide-bismuth oxide (CeO2-ZrO2-Bi2O3) solid solutions.
  • Catalyst design focused on incorporating open spaces and oxide anion vacancies within the crystal lattice.

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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

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Last Updated: Jun 25, 2026

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

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Main Results:

  • Successfully synthesized CeO2-ZrO2-Bi2O3 solid solutions exhibiting high catalytic activity for ethylene oxidation.
  • Developed NO decomposition catalysts leveraging crystal lattice defects, demonstrating significant advantages.
  • The novel 'concerto catalysts' showed superior performance compared to existing environmental catalysts.

Conclusions:

  • The design strategy integrating solid-state chemistry and ionics principles is effective for creating advanced environmental catalysts.
  • The synthesized materials offer a promising alternative to conventional catalysts for air pollution control.
  • Further research into structural features and their catalytic activity is warranted.