Related Experiment Video
Updated: Jan 14, 2026

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation
Published on: July 18, 2017
Ligand Field-Engineered Frontier Orbital Alignment in MXenes-Supported Single-Atom Catalysts for Enhanced Propane
Aqsa Abid1,2, XiaoYing Sun3, LingLing Shang3
1Shenyang National Laboratory for Materials Science, Institute of Metal Research Chinese Academy of Sciences, ShenYang 110016, China.
Single-atom catalysts (SACs) on V3C2O2 MXene enhance propane dehydrogenation by tuning electronic properties. Ligand fields stabilize SACs, lowering C-H activation barriers for efficient catalysis.
Area of Science:
- Materials Science
- Catalysis
- Surface Chemistry
Background:
- Single-atom catalysts (SACs) are crucial for efficient chemical transformations.
- The electronic properties of catalyst supports significantly influence SAC performance.
- V3C2O2 MXene presents a novel support material for SACs.
Purpose of the Study:
- To investigate the role of the ligand field in V3C2O2 MXene-supported SACs for propane dehydrogenation (PDH).
- To elucidate the electronic modulation of SACs by the V3C2O2 support.
- To determine the optimal reaction pathways and regeneration mechanisms for PDH.
Main Methods:
- Density Functional Theory (DFT) calculations were employed to model SACs on V3C2O2 MXene.
- Analysis of electronic structures, including d-orbital splitting and HOMO-LUMO gaps.
- Evaluation of reaction pathways for C-H activation and hydrogen desorption.
Main Results:
- The ligand field in V3C2O2 MXene lifts d-orbital degeneracy, narrowing the HOMO-LUMO gap and enhancing SAC stability.
- Lowered C-H activation barriers were observed compared to conventional metal surfaces.
- The P3 pathway (coadsorption at pure metal site) is the most favorable for C-H activation.
- Homolytic coupling is the preferred pathway for catalyst regeneration via hydrogen desorption.
Conclusions:
- V3C2O2-supported SACs provide a tunable platform for PDH.
- Crystal field effects mediate frontier orbital interactions, regulating catalytic reactivity.
- Pt-SAC on V3C2O2 MXene demonstrates superior stability and activity for PDH.
More Related Videos
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
08:25Development of Heterogeneous Enantioselective Catalysts using Chiral Metal-Organic Frameworks MOFs
Published on: January 17, 2020
Related Concept Videos
Reduction 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...
π Molecular Orbitals of 1,3-Butadiene
The simplest conjugated diene is 1,3-butadiene: a four-carbon system where each carbon is sp2-hybridized and has an unhybridized p orbital that contains an unpaired electron. According to molecular orbital theory, atomic orbitals combine to form molecular orbitals such that the number...
Reduction 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...
Catalysis
Reduction 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.
Conformations of Ethane and Propane
Staggered conformation is a low energy and more stable conformation with the C-H bonds on the front carbon placed at 60°dihedral angles relative to the C-H bonds on the back carbon, leading to a reduced torsional strain. In staggered...