A MODEL FOR THE STRUCTURE OF THE LARGE-PORE ZEOLITE SSZ-31

Authors
LOBO RF TSAPATSIS M FREYHARDT CC CHAN I CHEN CY ZONES SI DAVIS ME
Citation
Rf. Lobo et al., A MODEL FOR THE STRUCTURE OF THE LARGE-PORE ZEOLITE SSZ-31, Journal of the American Chemical Society, 119(16), 1997, pp. 3732-3744
Citations number
43
Categorie Soggetti
Chemistry
Journal title
Journal of the American Chemical Society → ACNP
ISSN journal
00027863
Volume
119
Issue
16
Year of publication
1997
Pages
3732 - 3744
Database
ISI
SICI code
0002-7863(1997)119:16<3732:AMFTSO>2.0.ZU;2-4
Abstract
A model for the structure of the zeolite SSZ-31 is presented. The mode l is obtained by combining information from adsorption capacity measur ements, transmission electron microscopy, and high-resolution X-ray di ffraction. S52-31 is a one-dimensional large-pore zeolite with a frame work density of 18.7 tetrahedral(T)-atoms per nm(-3) and a bulk densit y of 1.87 g cm(-3). The pore apertures are elliptical with major and m inor axes of approximately 8.6 Angstrom x 5.7 Angstrom. SSZ-31 is an e xtreme example of a complex and highly faulted zeolite. The structure can be described as an intergrowth of four different but structurally related polymorphs.