Jove
Visualize
Contact Us

Related Concept Videos

Catalysis02:50

Catalysis

22.9K
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.
22.9K
Heterogeneous Catalysis01:22

Heterogeneous Catalysis

141
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...
141

You might also read

Related Articles

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

Sort by
Same author

Variations of Alloying Site Density in Pd<sub>1</sub>Cu Single-Atom Alloy Catalysts Lead to Shifted Product Yields in Electrochemical CO Reduction.

Angewandte Chemie (International ed. in English)·2026
Same author

Multi-Scale Modeling for Plasma-Enhanced Ammonia Decomposition over Carbides and Nitrides.

ACS catalysis·2026
Same author

Diffusion Model-Guided Inverse Design of Bimetallic Catalysts for Ammonia Decomposition.

Journal of the American Chemical Society·2025
Same author

Active learning-guided catalyst design for selective acetate production in CO electroreduction.

Nature communications·2025
Same author

Integrating Physical Principles with Machine Learning for Predicting Field-Enhanced Catalysis.

JACS Au·2025
Same author

Cobalt-Doped Bismuth Nanosheet Catalyst for Enhanced Electrochemical CO<sub>2</sub> Reduction to Electrolyte-Free Formic Acid.

Angewandte Chemie (International ed. in English)·2024
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Video

Updated: May 3, 2026

Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia
12:05

Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia

Published on: October 10, 2013

15.4K

Multiscale Simulation Guided Electric Field-Enhanced Ammonia Catalytic Cracking.

Pragyansh Singh1, Qiang Li1, Yilang Liu1

  • 1Department of Chemical Engineering, University of Massachusetts, Lowell, Massachusetts 01854, United States.

ACS Catalysis
|May 22, 2025
PubMed
Summary

Applying electric fields significantly boosts ammonia catalytic cracking for hydrogen production. This method lowers required temperatures, making onboard hydrogen generation more feasible for maritime applications.

More Related Videos

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
10:52

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics

Published on: April 12, 2019

12.7K
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

3.5K

Related Experiment Videos

Last Updated: May 3, 2026

Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia
12:05

Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia

Published on: October 10, 2013

15.4K
Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
10:52

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics

Published on: April 12, 2019

12.7K
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

3.5K

Area of Science:

  • Catalysis
  • Materials Science
  • Chemical Engineering

Background:

  • Ammonia catalytic cracking is key for hydrogen production, especially for maritime fuel cells.
  • High temperatures limit current methods, hindering industrial use.
  • External electric fields offer a way to reduce temperature requirements.

Purpose of the Study:

  • To investigate the effect of electric fields on ammonia catalytic cracking over ruthenium (Ru) catalysts.
  • To develop a multiscale simulation framework for understanding field-enhanced catalysis.
  • To identify optimal conditions for efficient hydrogen production.

Main Methods:

  • Integrated density functional theory (DFT) calculations with microkinetic modeling.
  • Developed a multiscale simulation framework.
  • Performed sensitivity analysis to identify rate-limiting steps.

Main Results:

  • A negative electric field (-1 V/Å) at 673 K increased turnover frequency from 0.03 s⁻¹ to 1435.2 s⁻¹.
  • Electric fields enhanced turnover frequency by 4 orders of magnitude at 823 K.
  • Operating temperature was reduced from 750 K to 586 K (at 5 s⁻¹ turnover frequency) with a -1 V/Å field.
  • NH dehydrogenation over Ru(1013) was identified as the rate-limiting step.

Conclusions:

  • External electric fields can significantly enhance ammonia catalytic cracking efficiency.
  • This approach offers a pathway to lower operating temperatures for hydrogen production.
  • The multiscale model provides valuable mechanistic insights for catalyst design and process optimization.