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Angew Chem Int Ed Engl. 2016 Apr 11;55(16):4928-32. doi: 10.1002/anie.201510726. Epub 2016 Mar 16.

Targeted Synthesis of Two Super-Complex Zeolites with Embedded Isoreticular Structures.

Author information

1
Center for Ordered Nanoporous Materials Synthesis, School of Environmental Science and Engineering, POSTECH, Pohang, 790-784, Korea.
2
Inorganic and Structural Chemistry and Berzelii Center EXSELENT on Porous Materials, Department of Materials and Environmental Chemistry, Stockholm University, 10691, Stockholm, Sweden.
3
EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, Fife, KY16 9ST, UK.
4
Inorganic and Structural Chemistry and Berzelii Center EXSELENT on Porous Materials, Department of Materials and Environmental Chemistry, Stockholm University, 10691, Stockholm, Sweden. xzou@mmk.su.se.
5
Center for Ordered Nanoporous Materials Synthesis, School of Environmental Science and Engineering, POSTECH, Pohang, 790-784, Korea. sbhong@postech.ac.kr.

Abstract

A novel structural coding approach combining structure solution, prediction, and the targeted synthesis of new zeolites with expanding complexity and embedded isoreticular structures was recently proposed. Using this approach, the structures of two new zeolites in the RHO family, PST-20 and PST-25, were predicted and synthesized. Herein, by extending this approach, the next two higher generation members of this family, PST-26 and PST-28, have been predicted and synthesized. These two zeolites have much larger unit cell volumes (422,655 Å(3) and 614,912 Å(3), respectively) than those of the lower generations. Their crystallization was confirmed by a combination of both powder X-ray and electron diffraction techniques. Aluminate and water concentrations in the synthetic mixture were found to be the two most critical factors influencing the structural expansion of embedded isoreticular zeolites under the synthetic conditions studied herein.

KEYWORDS:

X-ray diffraction; microporous materials; structure prediction; synthesis design; zeolites

PMID:
26990818
DOI:
10.1002/anie.201510726

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