Related Experiment Video
Updated: Jan 9, 2026
Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Engineering Heterogeneous Dual-Coordination Environments for Single-Atom Nickel Catalysts: A Synergistic Strategy to
Yanan Liu1,2, Nan Yang1, Haisong Feng1
1State Key Laboratory of Chemical Resource Engineering, Beijing Engineering Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing 100029, China.
We developed a novel dual-atom catalyst for selective acetylene hydrogenation, achieving 91.9% ethylene selectivity. This breakthrough overcomes limitations in single-atom catalysts for efficient multireactant conversion.
Area of Science:
- Heterogeneous catalysis
- Materials science
- Nanotechnology
Background:
- Single-atom catalysts offer precise active sites but struggle with weak linear scaling relationships, limiting efficiency in complex reactions.
- Efficient conversion of multiple reactants in heterogeneous reactions is a significant challenge due to intermediate adsorption energy limitations.
Purpose of the Study:
- To design and synthesize a synergistic dual-coordination single-atom nickel catalyst (Ni1-S6/Ni1-Mo2) for enhanced selective acetylene hydrogenation.
- To overcome the limitations of traditional single-atom catalysts by utilizing the unique properties of ultrathin MoS2 layers.
Main Methods:
- Development of a synergistic dual-coordination single-atom Ni catalyst (Ni1-S6/Ni1-Mo2) on ultrathin MoS2 layers with edge sulfur vacancies.
- Utilized Density Functional Theory (DFT) calculations and in situ characterizations to elucidate catalytic mechanisms.
- Investigated hydrogen activation, hydrogen spillover, and selective C≡C bond adsorption.
Main Results:
- The Ni1-S6/Ni1-Mo2 catalyst demonstrated synergistic functions, facilitating ultralow barrier hydrogen activation and dynamic hydrogen spillover.
- Achieved breakthrough performance with 91.9% selectivity for ethylene at full acetylene conversion under mild conditions.
- Exhibited long-periodic stability, structural maintenance, and excellent resistance to coking.
Conclusions:
- The synergistic dual-coordination Ni sites effectively direct acetylene hydrogenation, favoring ethylene formation over by-products.
- Edge vacancy-mediated electron-enriched Ni species and Ni-S electronic interactions are key to enhanced H2 activation and selective C≡C bond adsorption.
- This catalyst design represents a significant advancement in selective hydrogenation reactions and overcoming scaling relationship limitations.
More Related Videos
08:40Synthesis 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
12:08Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes
Published on: June 24, 2022
Related Concept Videos
02:50Catalysis
02:17Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
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...
02:13Reduction of Alkenes: 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...
02:24Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation
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.
01:28Reduction of Benzene to Cyclohexane: Catalytic Hydrogenation