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SSZ‐35 and SSZ‐44: Two Related Zeolites Containing Pores Circumscribed by Ten‐ and Eighteen‐Membered Rings
Author(s) -
Wagner Paul,
Zones Stacey I.,
Davis Mark E.,
Medrud Ronald C.
Publication year - 1999
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/(sici)1521-3773(19990503)38:9<1269::aid-anie1269>3.0.co;2-3
Subject(s) - crystallography , stacking , rietveld refinement , synchrotron , molecular sieve , materials science , crystal structure , chemistry , organic chemistry , physics , optics , catalysis
Unusual one‐dimensional pores circumscribed by 10‐ and 18‐membered rings are a feature of the structures of two high‐silica molecular sieves, SSZ‐44 and SSZ‐35. Structure solution and Rietveld refinement from synchrotron powder X‐ray data reveal that the two materials are the pure end‐member polymorphs of a new fault series and contain similar layerlike units (see picture). The SSZ‐44 structure is formed by an AB stacking of the layers, whereas the SSZ‐35 structure is formed through an ABC stacking of the layer units.