Solid solution of a zeolite and a framework-bound OSDA-containing molecular sieve.

ABSTRACT: The structure of the as-made, hydrated form of ECR-40C, synthesized in the presence of (2-hydroxyethyl)trimethylammonium (HTMA⁺) ions as an organic structure-directing agent (OSDA) and 2 wt% (relative to alumina in the synthesis mixture) of aluminosilicate zeolite UZM-22 with the MEI topology as seeds, has been determined using synchrotron powder X-ray diffraction and Rietveld analyses. Two different types of organic species were suggested to exist in ECR-40C: the encapsulated HTMA⁺ ions with one intramolecular C-H···O hydrogen bond, typical of OSDA molecules in as-made UZM-22, and the framework-bound cations. A combination of elemental and thermal analyses, Na⁺ ion exchange, and multinuclear MAS NMR and IR spectroscopies clearly shows the coexistence of th

SUBMITTER: Lee JK 

PROVIDER: S-EPMC6021779 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature