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Synthesis and Structure Determination of SCM-15: A 3D Large Pore Zeolite with Interconnected Straight 12x12x10-Ring Channels
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK). Sinopec Shanghai Research Institute of Petrochemical Technology, China; Peking University, China.
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).ORCID iD: 0000-0002-5413-9038
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK). Peking University, China.
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Number of Authors: 52019 (English)In: Chemistry - A European Journal, ISSN 0947-6539, E-ISSN 1521-3765, Vol. 25, no 9, p. 2184-2188Article in journal (Refereed) Published
Abstract [en]

A new germanosilicate zeolite named SCM-15 (Sinopec Composite Material No. 15), the first zeolite containing a 3-dimensional (3D) channel system with interconnected 12-, 12-, and 10-ring channels (pore sizes: 6.1 x 7.2, 6.1 x 7.4, and 5.2 x 5.9 angstrom), has been synthesized using neutral 4-pyrrolidinopyridine as organic structure-directing agents (OSDAs). Its structure has been determined by combining single-crystal electron diffraction (SCED) and synchrotron powder X-ray diffraction (SPXD) data. The unique open framework structure of SCM-15 is related to that of FOS-5 (BEC), ITQ-7 (ISV), PKU-16 (POS), ITQ-26 (IWS), ITQ-21, Beta polymorph B, and SU-78B, since all these framework structures can be constructed from similar chains which are connected through shared 4-ring or double 4-ring (d4r) units. Based on this relation, six topologically reasonable 3D large or extra-large pore hypothetical zeolites are predicted.

Place, publisher, year, edition, pages
2019. Vol. 25, no 9, p. 2184-2188
Keywords [en]
channel system, organic structure-directing agent, structure determination, synthetic methods, zeolites
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:su:diva-167532DOI: 10.1002/chem.201805187ISI: 000461084900008PubMedID: 30521132OAI: oai:DiVA.org:su-167532DiVA, id: diva2:1305618
Available from: 2019-04-17 Created: 2019-04-17 Last updated: 2019-04-17Bibliographically approved

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