Dynamically Precise Constructing Dual-Atom Pd₂ Catalyst:A Monodisperse Catalyst With High Stability for...

Area of Science:

• Catalysis
• Materials Science
• Chemical Engineering

Background:

• Dual-atom catalysts (DACs) offer high reactivity and efficiency but face challenges in stability and rational design.
• Optimizing DAC performance requires overcoming inherent complexity and instability issues.

Purpose of the Study:

• To construct a stable and highly active atomically dispersed Pd2 dual-atom catalyst (DAC) using a dynamic strategy.
• To investigate the origin of the enhanced catalytic properties of the novel Pd2 DAC.

Main Methods:

• A dynamic strategy was employed to synthesize an atomically dispersed Pd2 DAC featuring an in situ generated Pd-Pd bond.
• Density functional theory (DFT) calculations and systematic experimental validations were performed.

Main Results:

• The synthesized Pd2 DAC demonstrated high activity and selectivity for the semi-hydrogenation of alkynes and functional internal acetylenes.
• The catalytic performance was twice as effective as the commercial Lindlar catalyst.
• DFT calculations and experiments confirmed that the synergistic effect of dynamically generated Pd-Pd bonds is responsible for the ultrahigh properties.

Conclusions:

• The dynamic strategy enables the creation of robust DACs with unprecedented properties.
• This approach opens new avenues for the industrial-scale preparation of stable and efficient DACs.
• The findings highlight the potential of dynamic strategies in advancing catalyst design and application.