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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: Jul 10, 2026

Ethylene Polymerizations Using Parallel Pressure Reactors and a Kinetic Analysis of Chain Transfer Polymerization

Ethylene Polymerizations Using Parallel Pressure Reactors and a Kinetic Analysis of Chain Transfer Polymerization

Published on: November 27, 2015

High-throughput parallel reactor system for propylene oxidation catalyst investigation.

Jiang P Yi¹, Zhi G Fan, Zheng W Jiang

¹Department of Chemical Engineering, Hunan University, Changsha, China 410082.

Journal of Combinatorial Chemistry

|November 1, 2007

Summary

A novel high-throughput reactor system enables simultaneous testing of 64 catalysts. A new colorimetric imaging method accurately analyzes reaction products like acrolein.

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Area of Science:

Chemical Engineering
Catalysis Science & Technology
Analytical Chemistry

Background:

Catalyst testing traditionally involves time-consuming single-channel reactors.
High-throughput experimentation is crucial for accelerating catalyst discovery and optimization.
Accurate and rapid analysis of reaction products is essential for effective high-throughput screening.

Purpose of the Study:

To design and validate a high-throughput reactor system for simultaneous catalyst testing.
To develop and verify a high-throughput analytical method for reaction product quantification.
To demonstrate the system's capability using propylene oxidation to acrolein.

Main Methods:

A modular high-throughput reactor system with gas flow splitters and a 64-channel parallel fixed-bed reactor was constructed.
Propylene oxidation was employed as a model reaction to test the reactor system's performance.
A high-throughput colorimetric diffusion-reflection imaging method was developed for acrolein analysis.

Main Results:

The reactor system successfully tested 64 catalysts simultaneously, yielding results comparable to single-channel reactors.
The developed colorimetric diffusion-reflection imaging method provided reliable and accurate acrolein quantification.
Validation against gas chromatography confirmed the accuracy of the novel imaging analysis technique.

Conclusions:

The designed high-throughput reactor system is effective for parallel catalyst testing.
The colorimetric diffusion-reflection imaging method offers a reliable and high-throughput alternative for acrolein analysis.
This integrated approach accelerates catalyst screening and reaction product analysis.