Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

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.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Uses of Molecular Docking Simulations in Elucidating Synergistic, Additive, and/or Multi-Target (SAM) Effects of Herbal Medicines.

Molecules (Basel, Switzerland)·2024

Same author

Fractal Modelling of Heterogeneous Catalytic Materials and Processes.

Materials (Basel, Switzerland)·2024

Same author

In-situ microwave-assisted catalytic upgrading of heavy oil: Experimental validation and effect of catalyst pore structure on activity.

Chemical engineering journal (Lausanne, Switzerland : 1996)·2020

Same author

Techniques for direct experimental evaluation of structure-transport relationships in disordered porous solids.

Adsorption : journal of the International Adsorption Society·2020

Same author

Molecular hydrogen and catalytic combustion in the production of hyperpolarized 83Kr and 129Xe MRI contrast agents.

Proceedings of the National Academy of Sciences of the United States of America·2016

Same author

Insights into the influence of the cooling profile on the reconstitution times of amorphous lyophilized protein formulations.

European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V·2015

Search research articles

Related Experiment Video

Updated: Aug 1, 2025

On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method

On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method

Published on: March 16, 2018

The Anatomy of Amorphous, Heterogeneous Catalyst Pellets.

Sean P Rigby^1,2

¹Department of Chemical and Environmental Engineering, Faculty of Engineering, University Park Campus, University of Nottingham, Nottingham NG7 2RD, UK.

Materials (Basel, Switzerland)

|April 28, 2023

Summary

This review explores characterizing and modeling the void space in disordered porous catalysts. Hybrid imaging and porosimetry methods best represent complex structures for understanding mass transport.

Keywords:

imaging pellet pore network porosimetry porosity simulation

More Related Videos

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation

Published on: July 18, 2017

Detection and Recovery of Palladium, Gold and Cobalt Metals from the Urban Mine Using Novel Sensors/Adsorbents Designated with Nanoscale Wagon-wheel-shaped Pores

Detection and Recovery of Palladium, Gold and Cobalt Metals from the Urban Mine Using Novel Sensors/Adsorbents Designated with Nanoscale Wagon-wheel-shaped Pores

Published on: December 6, 2015

Related Experiment Videos

Last Updated: Aug 1, 2025

On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method

On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method

Published on: March 16, 2018

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation

Published on: July 18, 2017

Detection and Recovery of Palladium, Gold and Cobalt Metals from the Urban Mine Using Novel Sensors/Adsorbents Designated with Nanoscale Wagon-wheel-shaped Pores

Detection and Recovery of Palladium, Gold and Cobalt Metals from the Urban Mine Using Novel Sensors/Adsorbents Designated with Nanoscale Wagon-wheel-shaped Pores

Published on: December 6, 2015

Area of Science:

Materials Science
Chemical Engineering
Catalysis Science

Background:

Disordered, amorphous porous heterogeneous catalysts (pellets, monoliths) are crucial in chemical processes.
Understanding their void space structure is key to optimizing performance.
Existing characterization methods have limitations in capturing complex heterogeneity.

Purpose of the Study:

To review structural characterization and void space representation of disordered porous catalysts.
To discuss advancements in determining void space descriptors like porosity, pore size, and tortuosity.
To evaluate the role of imaging modalities and modeling approaches.

Main Methods:

Review of direct and indirect characterization techniques, including imaging modalities.
Analysis of different void space representation models based on idealization and purpose.
Focus on hybrid methods combining imaging with porosimetry for multi-length scale analysis.

Main Results:

Key void space descriptors (porosity, pore size, tortuosity) determination is discussed.
Limitations of direct imaging (resolution, field of view) are highlighted.
Three main types of void space representations are identified, dependent on model purpose.

Conclusions:

Hybrid methods integrating imaging and indirect porosimetry are superior for modeling mass transport.
These methods bridge length scales and provide statistically representative parameters for heterogeneous media.
Accurate void space representation is essential for understanding and improving catalyst performance.