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

32.1K
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.
32.1K
Heterogeneous Catalysis01:22

Heterogeneous Catalysis

80
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...
80
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

4.0K
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...
4.0K
Esters to Carboxylic Acids: Acid-Catalyzed Hydrolysis01:13

Esters to Carboxylic Acids: Acid-Catalyzed Hydrolysis

4.4K
Hydrolysis of esters under acidic conditions proceeds through a nucleophilic acyl substitution. In the presence of excess water, the reaction proceeds in a reversible manner, forming carboxylic acids and alcohols.
During hydrolysis, the ester is first activated towards nucleophilic attack through the protonation of the carboxyl oxygen atom by the acid catalyst. The protonation makes the ester carbonyl carbon more electrophilic. In the next step, water acts as a nucleophile and adds to the...
4.4K
Reduction of Alkenes: Catalytic Hydrogenation02:13

Reduction of Alkenes: Catalytic Hydrogenation

14.8K
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...
14.8K
Regioselectivity and Stereochemistry of Acid-Catalyzed Hydration02:34

Regioselectivity and Stereochemistry of Acid-Catalyzed Hydration

10.0K
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.
10.0K

You might also read

Related Articles

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

Sort by
Same author

Modulating the Electron Mediators for Spatially Separated H<sub>2</sub> and O<sub>2</sub> Evolutions in Photocatalytic Water Splitting.

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

Minocycline-containing therapy in <i>Helicobacter pylori</i> infection: a systematic review and meta-analysis.

Therapeutic advances in gastroenterology·2026
Same author

Biomimetic Redox-Mediated Proton Relay in Nanoreactors for Photocatalysis.

Journal of the American Chemical Society·2026
Same author

Inflammasomes in digestive diseases: mechanisms and therapeutic potential.

Molecular biology reports·2026
Same author

Nickel-Catalyzed 1,2-Arylalkenylation of Unactivated Alkenes Enabled by a Native Hydroxy Group.

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

Unraveling the Kinetic Role of Doping in the Oxygen Evolution Reaction on Ce-Mn<sub>3</sub>O<sub>4</sub> Electrocatalysts.

The journal of physical chemistry letters·2026

Related Experiment Video

Updated: Mar 25, 2026

Hydrogen Production and Utilization in a Membrane Reactor
10:00

Hydrogen Production and Utilization in a Membrane Reactor

Published on: March 10, 2023

3.4K

Enhancing Ether Hydrogenolysis via Support Surface Proton Adsorption and Transfer Using Off-Field Electrocatalysis.

Ben Chang1,2, Qing-Nan Wang1,2, Chuchu Cheng1

  • 1State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China.

ACS Applied Materials & Interfaces
|March 24, 2026
PubMed
Summary

This study shows TiO2 supports enhance electrocatalytic C-O bond cleavage for biomass conversion by facilitating proton transfer to the catalyst. This improves efficiency in producing valuable chemicals and fuels.

Keywords:
electrocatalytic hydrogenationelectron mediatorsether hydrogenolysisproton adsorptionproton transfersupport effect

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

13.5K
Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes
12:08

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes

Published on: June 24, 2022

4.2K

Related Experiment Videos

Last Updated: Mar 25, 2026

Hydrogen Production and Utilization in a Membrane Reactor
10:00

Hydrogen Production and Utilization in a Membrane Reactor

Published on: March 10, 2023

3.4K
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

13.5K
Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes
12:08

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes

Published on: June 24, 2022

4.2K

Area of Science:

  • Catalysis
  • Materials Science
  • Electrochemistry

Background:

  • Efficient electrocatalytic hydrogenolysis of C-O bonds is crucial for biomass valorization.
  • The role of catalyst supports in proton transfer during C-O activation is not well understood.

Purpose of the Study:

  • To investigate the effect of catalyst supports on proton transfer in electrocatalytic hydrogenolysis.
  • To enhance the efficiency and selectivity of C-O bond cleavage for biomass conversion.

Main Methods:

  • Utilized a europium (Eu2+/Eu3+) redox mediator with a Palladium on Titanium Dioxide (Pd/TiO2) catalyst.
  • Performed hydrogenolysis of benzyl phenyl ether under a dilute acidic environment.
  • Compared the performance of Pd/TiO2 with Palladium on Carbon (Pd/C).

Main Results:

  • Achieved >99% conversion and selectivity in benzyl phenyl ether hydrogenolysis using Pd/TiO2.
  • Demonstrated 7-fold higher activity compared to Pd/C.
  • Showed that TiO2 facilitates proton transfer, creating localized high proton concentrations at Pd active sites.
  • Found that protonation of the ether linkage lowers the energy barrier for hydrogenolysis, increasing Faradaic efficiency.

Conclusions:

  • TiO2 supports significantly enhance electrocatalytic C-O bond cleavage by improving proton transfer kinetics.
  • Localized high proton concentration and ether linkage protonation are key to improved hydrogenolysis efficiency.
  • The findings provide insights for designing advanced electrocatalysts for biomass valorization and C-O bond cleavage.