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Heterogeneous Catalysis

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...

Catalysis

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.

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Related Experiment Video

Updated: Jun 10, 2026

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

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

Nanoparticles as semi-heterogeneous catalyst supports.

Alexander Schätz¹, Oliver Reiser, Wendelin J Stark

¹Institut für Chemie- und Bioingenieurwissenschaften, Department Chemie und Angewandte Biowissenschaften, ETH Zürich HCI E 107, Wolfgang-Pauli-Strasse 10, 8093 Zürich, Switzerland.

Chemistry (Weinheim an Der Bergstrasse, Germany)

|July 21, 2010

Summary

This summary is machine-generated.

Nanoparticles offer a versatile platform for catalysis, providing high surface area and accessibility. Recent advancements focus on reversible agglomeration and magnetic separation as efficient alternatives to traditional catalyst filtration methods.

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Area of Science:

Catalysis
Materials Science
Nanotechnology

Background:

Traditional heterogeneous catalysts often suffer from filtration challenges.
Nanoparticles offer unique properties like high surface area and accessibility for catalytic applications.

Purpose of the Study:

To highlight recent developments in nanoparticle-supported catalysis.
To explore nanoparticle agglomeration and magnetic separation as advanced separation techniques.

Main Methods:

Dispersing nanoparticles in common solvents.
Inducing reversible nanoparticle agglomeration via solvent manipulation.
Utilizing magnetic separation for nanoparticle recovery.

Main Results:

Nanoparticles demonstrate effective dispersion and accessibility in solvents.
Reversible agglomeration allows for controlled nanoparticle handling.
Magnetic separation offers an efficient alternative to filtration for nanoparticle catalysts.

Conclusions:

Nanoparticles are promising semi-heterogeneous supports for catalysis.
Advanced separation techniques like magnetic separation enhance catalyst recovery and reusability.