A new type of stacking fault in zeolites: presence of a coincidence boundary (√13. √13R32.2° superstructure)perpendicular to the tunnel direction in zeolite L

Abstract

Real-space imaging has revealed a tendency for zeolite-L to form well-defined coincidence boundaries by rotation of 32.2° of one part of a crystal with respect to another; the generated interface has a superlattice repeat of √ 13 times that of the original, and the number of continuous tunnels intersecting unit area of interface is ca. 8% of that in the unfaulted crystal.