Mutual self-regulation of d electrons of single atoms and adjacent nanoparticles for acetaldehyde manufacture

IF 11.5 Q1 CHEMISTRY, PHYSICAL
Bolin Wang, Yuxue Yue, Fangmin Zuo, Saisai Wang, Zilong Zhang, Yuteng Zhang, Meijun Liu, Haifeng Zhang
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引用次数: 0

Abstract

Metal-support interactions in catalysis impose fundamental limitations on maximum activity. Here, we show that the constraint relationship of local electronic and geometric structures of carbon-supported palladium (Pd) catalysts can be broken through the synergy between the Pd-Pd and the Pd-B coupling interaction, producing a class of densely populated entities with unique negatively charged properties. A volcano-shaped curve that depicts the relationship between Pd Bader charge and neighboring atomic distance is established, thereby optimizing catalytic performance. Acetaldehyde manufacture via acetylene hydration is used as our study case. Outstanding performance can be triggered over the densely populated Pd single-atom and nanoparticle co-catalytic sites compared with individual Pd sites. The effect is attributed to the negative charge and high-density effect of Pd-BN3 sites, which easily adapt their structures to binding C2H2 and H2O and varying reaction routes. This approach provides practical insights for the design of Pd-based catalysts comprising well-defined electronic and geometric structures.

Abstract Image

制造乙醛时单个原子和相邻纳米粒子 d 电子的相互自我调节
催化过程中的金属-支撑相互作用对最大活性造成了根本性的限制。在这里,我们展示了碳支撑钯(Pd)催化剂的局部电子和几何结构的约束关系可以通过 Pd-Pd 和 Pd-B 偶联相互作用的协同作用被打破,从而产生一类具有独特负电荷特性的高密度实体。通过建立描述 Pd Bader 电荷与相邻原子间距之间关系的火山状曲线,可以优化催化性能。我们以乙炔水合制造乙醛为例进行研究。与单个钯位点相比,密集的钯单原子和纳米粒子协同催化位点能激发出色的性能。这种效果归因于 Pd-BN3 位点的负电荷和高密度效应,它们很容易调整自身结构,以适应 C2H2 和 H2O 的结合以及不同的反应路线。这种方法为设计具有明确电子和几何结构的钯基催化剂提供了实用见解。
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来源期刊
CiteScore
10.50
自引率
6.40%
发文量
0
期刊介绍: Chem Catalysis is a monthly journal that publishes innovative research on fundamental and applied catalysis, providing a platform for researchers across chemistry, chemical engineering, and related fields. It serves as a premier resource for scientists and engineers in academia and industry, covering heterogeneous, homogeneous, and biocatalysis. Emphasizing transformative methods and technologies, the journal aims to advance understanding, introduce novel catalysts, and connect fundamental insights to real-world applications for societal benefit.
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