Related Experiment Video
Updated: Mar 29, 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
4.4K
Harnessing Support-Dependent Hydrogen Spillover for Ni-Based CO2 Hydrogenation.
Kazuki Shun1, Takumi Kidawara1, Yasutaka Kuwahara1,2
1Division of Materials and Manufacturing Science, Graduate School of Engineering, The University of Osaka, Suita, Osaka, Japan.
Angewandte Chemie (International Ed. in English)
|March 28, 2026
Summary
Harnessing support-dependent hydrogen spillover enhances nickel-catalyzed CO2 hydrogenation. This strategy boosts catalyst performance by controlling hydrogen diffusion pathways on the support, leading to superior catalytic activity.
Area of Science:
- Heterogeneous Catalysis
- Materials Science
- Chemical Engineering
Background:
- Hydrogen spillover is crucial in catalysis but lacks design principles.
- Support dependence of hydrogen spillover is poorly understood.
- Rational utilization of hydrogen spillover is key for catalyst design.
Purpose of the Study:
- To demonstrate and harness support-dependent hydrogen spillover for nickel-based CO2 hydrogenation.
- To elucidate the role of support properties in hydrogen spillover.
- To establish hydrogen spillover as a design principle for enhanced catalysis.
Main Methods:
- Physically mixing Ni catalysts with Pt co-catalysts to initiate hydrogen spillover.
- Systematic comparison of catalytic performance across various oxide supports.
- Mechanistic investigations using reducible oxides to study spillover pathways.
Main Results:
- Catalytic promotion of CO2 hydrogenation by Ni catalysts is achieved via hydrogen spillover.
- Support surface diffusion of hydrogen, not bulk diffusion, is critical for promotion.
- Enhanced Ni catalytic activity comparable to state-of-the-art catalysts was reached.
- Spillover roles varied with support reducibility: removing poisons on moderately reducible, forming vacancies on highly reducible oxides.
Conclusions:
- Support-dependent hydrogen spillover is a versatile design principle for Ni-based CO2 hydrogenation.
- Catalyst performance can be significantly enhanced without altering the Ni structure itself.
- Understanding spillover pathways on different supports is crucial for optimizing catalytic reactions.
Related Concept Videos
02:13Reduction of Alkenes: Catalytic Hydrogenation
14.9K
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...
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...
14.9K
02:17Reduction 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...
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
02:50Catalysis
32.2K
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.
32.2K
01:28Reduction of Benzene to Cyclohexane: Catalytic Hydrogenation
6.4K
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...
6.4K
01:22Heterogeneous Catalysis
109
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...
109
02:24Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation
9.5K
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.
9.5K