Hunger M
Institute of Chemical Technology I, University of Stuttgart, Germany.
Solid State Nucl Magn Reson. 1996 Feb;6(1):1-29. doi: 10.1016/0926-2040(95)01201-X.
Among the variety of experimental techniques used for the characterization of aluminosilicate and aluminophosphate-based molecular sieves, NMR spectroscopy has the advantage of providing detailed information on local bonding and solid-state interactions. In the last 15 years, NMR has been used to study zeolitic frameworks, catalytic active centres, adsorbed probe molecules and their chemical interactions. This paper reviews multinuclear solid-state NMR studies of Brønsted acid sites in zeolites. The main topics are the formation, accessibility and localization of hydroxyl protons, dehydroxylation of zeolites, the interaction of hydroxyl protons with probe molecules, and the geometry and parameters of the local structure of OH groups in these materials.
在用于表征铝硅酸盐和磷酸铝基分子筛的各种实验技术中，核磁共振光谱法具有提供有关局部键合和固态相互作用详细信息的优势。在过去15年中，核磁共振已被用于研究沸石骨架、催化活性中心、吸附的探针分子及其化学相互作用。本文综述了沸石中布朗斯特酸位点的多核固态核磁共振研究。主要主题包括羟基质子的形成、可及性和定位、沸石的脱羟基作用、羟基质子与探针分子的相互作用以及这些材料中OH基团局部结构的几何形状和参数。
