Jove
Visualize
Contact Us
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 Concept Videos

Catalysis02:50

Catalysis

30.1K
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.
30.1K
Reduction of Alkenes: Catalytic Hydrogenation02:13

Reduction of Alkenes: Catalytic Hydrogenation

13.9K
Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
13.9K
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

3.8K
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
3.8K
Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation02:24

Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation

8.9K
Introduction
Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.
8.9K
Reduction of Benzene to Cyclohexane: Catalytic Hydrogenation01:28

Reduction of Benzene to Cyclohexane: Catalytic Hydrogenation

5.7K
Unlike the easy catalytic hydrogenation of an alkene double bond, hydrogenation of a benzene double bond under similar reaction conditions does not take place easily. For example, in the reduction of stilbene, the benzene ring remains unaffected while the alkene bond gets reduced. Hydrogenation of an alkene double bond is exothermic and a favorable process. In contrast, to hydrogenate the first unsaturated bond of benzene, an energy input is needed; that is, the process is endothermic. This is...
5.7K
Cycloaddition Reactions: MO Requirements for Thermal Activation01:16

Cycloaddition Reactions: MO Requirements for Thermal Activation

4.2K
Thermal cycloadditions are reactions where the source of activation energy needed to initiate the reaction is provided in the form of heat. A typical example of a thermally-allowed cycloaddition is the Diels–Alder reaction, which is a [4 + 2] cycloaddition. In contrast, a [2 + 2] cycloaddition is thermally forbidden.
4.2K

You might also read

Related Articles

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

Sort by
Same author

Unravelling the key factors governing O<sub>2</sub> evolution upon charging a reversible LiOH-based nonaqueous Li | |O<sub>2</sub> battery.

Nature communications·2026
Same author

Blue Honeysuckle (<i>Lonicera caerulea</i> L.) Polyphenol Extract Inhibits α-Glucosidase Activity and Modulates Glucose Transport in Caco-2 Cells.

Molecules (Basel, Switzerland)·2026
Same author

Atomically precise Au<sub>8</sub>Pd<sub>1</sub>(DPPF)<sub>4</sub><sup>2+</sup> catalyst orchestrates the synthesis and utilization of hydrogen peroxide.

Nature communications·2026
Same author

Fast inversion of approximate resistivity for oil-based mud resistivity imager based on open-short calibration.

Scientific reports·2026
Same author

Boosting Solid-Solid Conversion Kinetics via Electron-Pinned Interface Engineering for High-Energy-Density Li-S Batteries.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Identifying Facet-Dependent CO<sub>2</sub> Adsorption Sites on Anatase TiO<sub>2</sub> Nanocrystals by Solid-State NMR Spectroscopy.

The journal of physical chemistry letters·2026

Related Experiment Video

Updated: Jan 14, 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

4.2K

Dynamic activation catalysts for CO2 hydrogenation.

Zhewei Zhang1, Jun Yao1, Chenyang Shen1

  • 1Key Lab of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.

Nature Communications
|October 22, 2025
PubMed
Summary

This study introduces dynamic activation catalysts that continuously generate active sites. This method significantly enhances copper on alumina catalyst performance for carbon dioxide hydrogenation, boosting methanol production.

More Related Videos

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

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

Published on: April 10, 2018

19.0K
Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether
09:21

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether

Published on: August 17, 2019

9.4K

Related Experiment Videos

Last Updated: Jan 14, 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

4.2K
Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

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

Published on: April 10, 2018

19.0K
Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether
09:21

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether

Published on: August 17, 2019

9.4K

Area of Science:

  • Catalysis
  • Materials Science
  • Chemical Engineering

Background:

  • Traditional heterogeneous catalysts aim for structural stability during reactions.
  • Low-activity catalysts often limit efficiency in processes like CO2 hydrogenation.
  • Developing methods to enhance catalyst activity is crucial for industrial applications.

Purpose of the Study:

  • To introduce and characterize a novel dynamic activation catalyst system.
  • To investigate the mechanism of enhanced catalytic performance in CO2 hydrogenation.
  • To explore the potential of dynamic activation for improving catalyst efficiency.

Main Methods:

  • Utilizing high-speed reaction streams to induce cyclic collisions of Cu/Al2O3 particulates.
  • Employing experimental and theoretical investigations to analyze catalyst behavior.
  • Characterizing the dynamic activation state of the catalyst.

Main Results:

  • Achieved over a threefold increase in CO2 conversion rate.
  • Promoted methanol selectivity to 95% from less than 40%.
  • Increased methanol space-time-yield by six times.
  • Defined dynamic activation as a unique condensed state with altered lattice structure and coordination.

Conclusions:

  • Dynamic activation offers a novel strategy to dramatically enhance catalyst performance.
  • This approach significantly improves CO2 hydrogenation efficiency and methanol selectivity.
  • Further research into dynamic activation catalysts promises advancements in catalysis and reaction discovery.