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

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

3.3K
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...
3.3K
Reduction of Alkenes: Catalytic Hydrogenation02:13

Reduction of Alkenes: Catalytic Hydrogenation

12.0K
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...
12.0K
Catalysis02:50

Catalysis

26.9K
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.
26.9K
Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation02:24

Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation

7.7K
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.
7.7K
Reduction of Benzene to Cyclohexane: Catalytic Hydrogenation01:28

Reduction of Benzene to Cyclohexane: Catalytic Hydrogenation

4.5K
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...
4.5K
Regioselectivity and Stereochemistry of Acid-Catalyzed Hydration02:34

Regioselectivity and Stereochemistry of Acid-Catalyzed Hydration

8.4K
The rate of acid-catalyzed hydration of alkenes depends on the alkene's structure, as the presence of alkyl substituents at the double bond can significantly influence the rate.
8.4K

You might also read

Related Articles

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

Sort by
Same author

Isolating Coupled Effects by Interface Editing of Intermetallic Heterostructures for Fuel Cells.

Journal of the American Chemical Society·2026
Same author

Two-dimensional iridium-cobalt oxide for high-efficiency acidic oxygen evolution reaction electrocatalysis.

Chemical communications (Cambridge, England)·2026
Same author

Engineering of Extracellular Vesicles for Targeted Delivery of Prodigiosin.

Biotech (Basel (Switzerland))·2026
Same author

Two-Dimensional New Phase Zirconium Dioxide Supported Platinum Interface for Acidic Hydrogen Evolution Reaction.

Nano letters·2026
Same author

Trisferrocenyltrithiophosphite-Copper(I) Bromide Composites for Electrochemical CO<sub>2</sub> Reduction.

International journal of molecular sciences·2026
Same author

Designable Multiphase Nanocrystals Based on Phase Rearrangement.

Journal of the American Chemical Society·2025

Related Experiment Video

Updated: Jun 27, 2025

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
10:52

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex

Published on: July 27, 2022

2.7K

Can Re cluster complexes be an efficient catalyst for hydrogen evolution reaction? Insights from experiments and

Mikhail Khrizanforov1,2, Bulat Akhmadeev1,2, Polina Milyukova2

  • 1Kazan (Volga region) Federal University, 18, Kremlyovskaya str., 420008 Kazan, Russian Federation. bulat_ahmadeev@mail.ru.

Dalton Transactions (Cambridge, England : 2003)
|April 29, 2024
PubMed
Summary

Researchers developed rhenium cluster complexes as efficient catalysts for electrochemical water splitting, achieving high hydrogen production rates without expensive platinoids. These novel catalysts offer a cost-effective solution for sustainable hydrogen generation.

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

18.2K
Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
10:21

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

8.4K

Related Experiment Videos

Last Updated: Jun 27, 2025

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
10:52

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex

Published on: July 27, 2022

2.7K
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

18.2K
Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
10:21

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

8.4K

Area of Science:

  • Materials Science
  • Electrochemistry
  • Catalysis

Background:

  • Developing cost-effective catalysts for water splitting is crucial for sustainable hydrogen production.
  • Platinoid catalysts are effective but economically prohibitive for widespread use.
  • Alternative non-platinoid catalysts are needed for efficient hydrogen evolution reaction (HER).

Purpose of the Study:

  • To investigate the catalytic properties of hexanuclear rhenium cluster complexes for the hydrogen evolution reaction (HER).
  • To assess the economic viability and efficiency of these rhenium complexes as alternatives to platinoids.
  • To explore the potential of rhenium clusters in electrochemical water splitting for hydrogen production.

Main Methods:

  • Fabrication of a paste composite electrode incorporating hexanuclear rhenium cluster complexes.
  • Electrochemical characterization of the electrode to determine catalytic performance for HER.
  • Analysis of reaction kinetics using Tafel slope measurements.
  • Computational modeling using density functional theory (DFT) to support experimental findings.

Main Results:

  • The rhenium cluster composite electrode achieved a current density of 10 mA cm-2 at a low overpotential of 90 mV (RHE).
  • {Re6Se8}-based complexes exhibited favorable HER kinetics with a Tafel slope of 102 mV dec-1.
  • DFT calculations corroborated the experimental results, supporting the catalytic activity of the rhenium clusters.

Conclusions:

  • Hexanuclear rhenium cluster complexes show significant promise as effective and economical catalysts for the hydrogen evolution reaction.
  • These findings open a new avenue for the practical implementation of hydrogen production via electrochemical water splitting.
  • Rhenium cluster compounds represent a viable alternative to platinoids in catalysis for renewable energy applications.