Solid-state 29Si n.m.r. and high-resolution electron microscopic studies of a silicate analogue of faujasite

Abstract

Reaction of synthetic zeolite Na-Y with SiCl₄ yields an essentially aluminium-free faujasite structure which is highly crystalline, and which, when studied by ²⁹Si n.m.r. spectroscopy with magic-angle-spinning, gives a spectrum consisting of a single, sharp peak characteristic of regular, Si(4 Si) lattice ordering.