Related Experiment Video
Updated: Feb 27, 2026
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
4.3K
Development of Proton-Responsive Catalysts
Lin Wang1, Ryoichi Kanega1, Hajime Kawanami2
1Department of Energy and Environment, Research Institute of Energy Frontier, National Institute of Advanced Industrial Science and Technology, (AIST) Tsukuba, Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan.
Chemical Record (New York, N.Y.)
|June 27, 2017
Summary
Researchers developed efficient proton-responsive catalysts that change properties with pH. These catalysts are key for reactions like carbon dioxide hydrogenation and formic acid dehydrogenation, enabling hydrogen storage and production.
Area of Science:
- Catalysis
- Supramolecular Chemistry
- Green Chemistry
Background:
- Classical ligands are often spectators in catalytic reactions.
- Proton-responsive catalysts offer tunable properties, including activation, solubility, and coordination sphere interactions.
- Designing catalysts that actively participate in reactions is an emerging area.
Purpose of the Study:
- To develop and showcase highly efficient proton-responsive catalysts.
- To explore the application of these catalysts in key chemical transformations.
- To highlight the significance of pH-dependent interactions in catalysis.
Main Methods:
- Synthesis of novel proton-responsive catalysts with transformable ligands.
- Application of catalysts in carbon dioxide (CO2) hydrogenation for H2 storage.
- Utilizing catalysts for formic acid (FA) dehydrogenation for H2 production and transfer hydrogenation.
- Investigating the role of pH-dependent proton-responsive complexes in catalytic activity.
Main Results:
- Development of several highly efficient proton-responsive catalysts.
- Successful application in CO2 hydrogenation, FA dehydrogenation, and transfer hydrogenation.
- Demonstration of catalyst activation through electronic effects and pH-tuned solubility.
- Evidence of second-coordination-sphere interactions influencing catalytic performance.
Conclusions:
- Proton-responsive catalysts with transformable ligands are effective for various chemical reactions.
- pH-dependent properties of these catalysts are crucial for their efficient operation.
- This work advances the design of smart catalysts for sustainable chemical processes.
More Related Videos
Related Concept Videos
01:22Heterogeneous Catalysis
9
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...
9
02:50Catalysis
31.1K
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.
31.1K
02:17Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
3.9K
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...
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...
3.9K
00:57Cationic Chain-Growth Polymerization: Mechanism
3.0K
The cationic polymerization mechanism consists of three steps: initiation, propagation, and termination. In the initiation step of the polymerization process, the π bond of a monomer gets protonated by the Lewis acid catalyst, which is formed from boron trifluoride and water. The protonation of the π bond generates a carbocation stabilized by the electron‐donating group. In the propagation step, the π bond of the second monomer acts as a nucleophile and attacks the...
3.0K
02:13Reduction of Alkenes: Catalytic Hydrogenation
14.5K
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...
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...
14.5K
02:24Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation
9.2K
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.
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.
9.2K