Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 14, Pages 3727-3732Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201800791
Keywords
aluminophosphates; enantiomeric structural building units; microporous materials; structure elucidation; zeolites
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Funding
- National Creative Research Initiative Program through the National Research Foundation of Korea [2012R1A3A2048833]
- Swedish Research Council (VR)
- Knut and Alice Wallenberg Foundation [3DEM-NATUR]
- MSIP
- POSTECH
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Herein we report the synthesis and structures of two new small-pore aluminophosphate molecular sieves PST-13 and PST-14 with mutually connected 8-ring channels. The structure of PST-13, synthesized using diethylamine as an organic structure-directing agent, contains penta-coordinated framework Al atoms bridged by hydroxy groups and thus edge-sharing 3- and 5-rings. Upon calcination, PST-13 undergoes a transformation to PST-14 with loss of bridging hydroxy groups and occluded organic species. The structures of both materials consist nonjointly of pairs of previously undiscovered 1,5- and 1,6-open double 4-rings (d4rs) which are mirror images of each other. We also present a series of novel chemically feasible hypothetical structures built from 1-open d4r (sti) or 1,3-open d4r (nsc) units, as well as from these two enantiomeric structural building units.
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