固态核磁共振光谱法研究表面金属氢化物的最新进展

Pan Gao, Guangjin Hou
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引用次数: 0

摘要

固体表面上的金属氢化物(M-H),即表面M-H,是多相催化中普遍存在的关键物质,其中间作用已被提出,如(脱)氢化和烷烃活化等,但详细的光谱表征仍然具有挑战性。固态核磁共振(ssNMR)光谱已经成为表面研究的有力工具,因为它可以从多个角度获得原子水平上的局部结构表征,并提供有关化学键和空间结构的全面信息。本文综述并讨论了ssNMR在固体催化剂(包括负载型单位点非均相催化剂、大块金属氧化物和金属改性沸石)上成功表征表面M-H的最新研究进展。我们还讨论了该领域的机遇和挑战,以及最先进的ssNMR技术的潜在应用/发展,从而进一步探索金属氢化物在多相催化中的应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Recent advances on surface metal hydrides studied by solid-state nuclear magnetic resonance spectroscopy

Recent advances on surface metal hydrides studied by solid-state nuclear magnetic resonance spectroscopy

Metal hydrides (M–H) on solid surfaces, i.e., surface M–H, are ubiquitous but critical species in heterogeneous catalysis, and their intermediate roles have been proposed in numerous reactions such as (de)hydrogenation and alkanes activation, etc., however, the detailed spectroscopic characterizations remain challenging. Solid-state nuclear magnetic resonance (ssNMR) spectroscopy has become a powerful tool in surface studies, as it provides access to local structural characterizations at atomic level from multiple views, with comprehensive information on chemical bonding and spatial structures. In this review, we summarized and discussed the latest research developments on the successful application of ssNMR to characterize surface M–H species on solid catalysts including supported single-site heterogeneous catalysts, bulk metal oxides and metal-modified zeolites. We also discussed the opportunities and challenges in this field, as well as the potential application/development of state-of-the-art ssNMR technologies to enable further exploration of metal hydrides in heterogeneous catalysis.

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来源期刊
Magnetic Resonance Letters
Magnetic Resonance Letters Analytical Chemistry, Spectroscopy, Radiology and Imaging, Biochemistry, Genetics and Molecular Biology (General)
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