Koller Hubert, Weiss Mark
Institute of Physical Chemistry, University of Münster, Corrensstr. 28/30, 48149, Münster, Germany.
Top Curr Chem. 2012;306:189-227. doi: 10.1007/128_2011_123.
Solid state NMR spectroscopy applied to the science of crystalline micro- and mesoporous silica materials over the past 10 years is reviewed. A survey is provided of framework structure and connectivity analyses from chemical shift effects of various elements in zeolites including heteroatom substitutions, framework defects and pentacoordinated silicon for zeolites containing fluoride ions. New developments in the field of NMR crystallography are included. Spatial host-guest ordering and confinement effects of zeolite-sorbate complexes are outlined, with special emphasis on NMR applications utilizing the heteronuclear dipolar interaction. The characterization of zeolite acid sites and in situ NMR on catalytic conversions is also included. Finally, the motion of extra-framework cations is investigated in two tutorial cases of sodium hopping in sodalite and cancrinite.
本文综述了过去10年应用于结晶微孔和介孔二氧化硅材料科学的固态核磁共振光谱学。文中概述了通过沸石中各种元素的化学位移效应进行的骨架结构和连通性分析，包括杂原子取代、骨架缺陷以及含氟离子沸石中的五配位硅。还介绍了核磁共振晶体学领域的新进展。概述了沸石 - 吸附质配合物的空间主客体有序排列和限制效应，特别强调了利用异核偶极相互作用的核磁共振应用。还包括沸石酸位点的表征以及催化转化过程中的原位核磁共振。最后，通过方钠石和钙霞石中钠跳跃的两个示例研究了骨架外阳离子的运动。
