Solid State NMR Investigations of Zeolites and Related Materials

Abstract

This lecture describes the application of NMR to the investigation of the lattice structure of zeolites and related molecular sieves. We begin with an introduction to nthe structure and properties of molecular sieves and also to solid-state NMR techniques and go on to describe the application of these NMR techniques to the investigation of low Si-Al ratio materials, emphasizing the experiments on spin one-half nuclei such as 29Si and 31P. We will then talk about the corresponding investigations involving quadrupolar nuclei such as 27A1, 11B and 17O and then discuss NMR experiments which can be carried out on highly siliceous systems including 3D connectivity experiments which establish the bonding schemes within the lattice. The last topic will be on very recent work involving coherence between quadrupolar nuclei and other nuclei establishing connectivity involving nuclei such as 27Al, 17O and 31P in these structures.