Solid-state nuclear magnetic resonance investigations of the nature, property, and activity of acid sites on solid catalysts
Solid-state nuclear magnetic resonance investigations of the nature, property, and activity of acid sites on solid catalysts
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DOI：
10.1016/j.ssnmr.2011.03.007
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发表时间：
2011-05-01
影响因子：
3.2
通讯作者：
Hunger, Michael
中科院分区：
文献类型：
--
作者：
Jiang, Yijiao;Huang, Jun;Hunger, Michael
多相催化领域的进一步进展取决于我们对固体催化剂表面位置的性质和行为的了解，以及对这些材料催化化学反应机理的了解。在过去的几十年里，固体核磁共振波谱已经发展成为固体催化剂常规表征的重要工具。本文综述了固体核磁共振研究固体酸表面Bronsted位和Lewis位的实验方法和应用。通过微孔和介孔材料的合成后修饰途径产生表面中心的研究支持新催化剂体系的开发和现有催化剂体系的改进。原位固体核磁共振的高温和流动技术可以更深入地了解多相催化反应的机理，并为研究酸性表面中心的活性开辟了道路。它们有助于阐明反应物在Bronsted和Lewis酸位上的活化，并提高我们对影响酸催化反应选择性的机理的理解。(C)2011 Elsevier Inc.保留所有权利。
Further progress in the field of heterogeneous catalysis depends on our knowledge of the nature and behavior of surface sites on solid catalysts and of the mechanisms of chemical reactions catalyzed by these materials. In the past decades, solid-state NMR spectroscopy has been developed to an important tool for routine characterization of solid catalysts. The present work gives a review on experimental approaches and applications of solid-state NMR spectroscopy for investigating Bronsted and Lewis sites on solid acids. Studies focusing on the generation of surface sites via post-synthesis modification routes of microporous and mesoporous materials support the development of new and the improvement of existing catalyst systems. High-temperature and flow techniques of in situ solid-state NMR spectroscopy allow a deeper insight into the mechanisms of heterogeneously catalyzed reactions and open the way for studying the activity of acidic surface sites. They help to clarify the activation of reactants on Bronsted and Lewis acid sites and improve our understanding of mechanisms affecting the selectivity of acid-catalyzed reactions. (C) 2011 Elsevier Inc. All rights reserved.