Dynamically Precise Constructing Dual-Atom Pd<sub>2</sub> Catalyst:A Monodisperse Catalyst With High Stability for Semi-Hydrogenation of Alkyne.
basic_science · Level V
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- Record sourced from PubMed, PMID 39120050.
- Also identified by DOI 10.1002/adma.202409436.
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Abstract
Dual-atom catalysts (DACs) originate unprecedented reactivity and maximize resource efficiency. The fundamental difficulty lies in the high complexity and instability of DACs, making the rational design and targeted performance optimization a grand challenge. Here, an atomically dispersed Pd<sub>2</sub> DAC with an in situ generated Pd─Pd bond is constructed by a dynamic strategy, which achieves high activity and selectivity for semi-hydrogenation of alkynes and functional internal acetylene, twice higher than commercial Lindlar catalyst. Density functional theory calculations and systematic experiments confirms the ultrahigh properties of Pd<sub>2</sub> DAC originates from the synergistic effect of the dynamically generated Pd─Pd bonds. This discovery highlights the potential for dynamic strategies and opens unprecedented possibilities for the preparation of robust DACs on an industrial scale.