A NEUTRON-DIFFRACTION AND INFRARED-SPECTROSCOPY STUDY OF THE ACID FORM OF THE ALUMINOSILICATE ZEOLITE, CHABAZITE (H-SSZ-13)

Authors
SMITH LJ DAVIDSON A CHEETHAM AK
Citation
Lj. Smith et al., A NEUTRON-DIFFRACTION AND INFRARED-SPECTROSCOPY STUDY OF THE ACID FORM OF THE ALUMINOSILICATE ZEOLITE, CHABAZITE (H-SSZ-13), Catalysis letters, 49(3-4), 1997, pp. 143-146
Citations number
15
Journal title
Catalysis letters → ACNP
ISSN journal
1011372X
Volume
49
Issue
3-4
Year of publication
1997
Pages
143 - 146
Database
ISI
SICI code
1011-372X(1997)49:3-4<143:ANAISO>2.0.ZU;2-X
Abstract
A powder neutron diffraction study of the structure of D-SSZ-13 (R-3m, a = 13.6046(6), c = 14.829(1) Angstrom, R-p = 3.79%, R-wp = 4.79%, ch i(2) = 2.526) reveals the presence of two distinct acid sites in the u nit cell, one on the six-ring at O(2) and one in the eight-ring window at O(1). These sites are also verified by DRIFT spectroscopy, showing two distinct acid sites upon the dehydration of the zeolite.