pt基非均相催化剂上H2活化及吸附氢的研究进展

IF 3.9 3区 化学 Q2 CHEMISTRY, PHYSICAL
ChemCatChem Pub Date : 2025-08-22 DOI:10.1002/cctc.202500902
Qiangqiang Wu, Weixiang Xiong, Guangxing Yang
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引用次数: 0

摘要

H2在多相催化剂上的活化是许多化学过程的基本步骤,吸附氢(H)的性质对催化性能起着至关重要的作用。在这篇综述中,我们根据活性金属位点的配位环境,系统地分类了不同H种的形成,区分了均解氢和异解氢的解离途径。专注于基于Pt的非均相催化剂,我们提供了原子尺度上对吸附H和Pt金属的见解。然后通过三种关键的光谱技术对Pt─H加合物的实验检测进行严格评估:红外(IR)光谱、非弹性中子散射(INS)光谱和x射线吸收光谱(XAS),突出了光谱解释的最新进展。还讨论了可以提供Pt─H键结合细节的补充理论研究,以阐明Pt─H吸附构型、结合能、动力学性质和覆盖依赖行为。最后,我们总结了各种表征方法的优点和局限性,并对未来的研究方向进行了展望,以进一步了解吸附H在催化中的作用。本文旨在弥合实验观察与理论模拟之间的差距,为设计更高效的含氢反应催化剂提供全面的基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

H2 Activation and Adsorbed H Species on Pt-Based Heterogeneous Catalysts: Fundamentals and Advances

H2 Activation and Adsorbed H Species on Pt-Based Heterogeneous Catalysts: Fundamentals and Advances

H2 Activation and Adsorbed H Species on Pt-Based Heterogeneous Catalysts: Fundamentals and Advances

H2 Activation and Adsorbed H Species on Pt-Based Heterogeneous Catalysts: Fundamentals and Advances

H2 activation on heterogeneous catalysts is a fundamental step in numerous chemical processes, with the nature of adsorbed hydrogen (H) species playing a critical role in catalytic performance. In this review, we systematically categorize the formation of different H species based on the coordination environment of active metal sites, distinguishing between homolytic and heterolytic H2 dissociation pathways. Focusing on Pt-based heterogeneous catalysts, we provide atomic-scale insights into adsorbed H species and Pt metal. The experimental detection of Pt─H adducts is then critically evaluated via three key spectroscopic techniques: infrared (IR) spectroscopy, inelastic neutron scattering (INS) spectroscopy, and X-ray absorption spectroscopy (XAS), highlighting recent advancements in spectral interpretation. Complementary theoretical studies that can provide binding details of Pt─H bonds are also discussed to elucidate Pt─H adsorption configurations, binding energies, dynamic properties, and coverage-dependent behavior. Finally, we summarize the strengths and limitations of each characterization method and provide perspectives on future research directions for understanding adsorbed H species in catalysis. This review aims to bridge the gap between experimental observations and theoretical modeling, offering a comprehensive foundation for designing more efficient catalysts in hydrogen-involved reactions.

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来源期刊
ChemCatChem
ChemCatChem 化学-物理化学
CiteScore
8.10
自引率
4.40%
发文量
511
审稿时长
1.3 months
期刊介绍: With an impact factor of 4.495 (2018), ChemCatChem is one of the premier journals in the field of catalysis. The journal provides primary research papers and critical secondary information on heterogeneous, homogeneous and bio- and nanocatalysis. The journal is well placed to strengthen cross-communication within between these communities. Its authors and readers come from academia, the chemical industry, and government laboratories across the world. It is published on behalf of Chemistry Europe, an association of 16 European chemical societies, and is supported by the German Catalysis Society.
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