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A procedure for identifying possible products in the assembly-disassembly-organization-reassembly (ADOR) synthesis of zeolites
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SYSNO ASEP 0517116 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title A procedure for identifying possible products in the assembly-disassembly-organization-reassembly (ADOR) synthesis of zeolites Author(s) Henkelis, S. E. (GB)
Mazur, M. (CZ)
Rice, C. M. (GB)
Bignami, G. P. M. (GB)
Wheatley, P. S. (GB)
Ashbrook, S. E. (GB)
Čejka, Jiří (UFCH-W) RID, ORCID, SAI
Morris, R. E. (GB)Source Title Nature Protocols. - : Nature Publishing Group - ISSN 1754-2189
Roč. 14, č. 3 (2019), s. 781-794Number of pages 14 s. Language eng - English Country GB - United Kingdom Keywords solid-state nmr ; channels ; zeolites Subject RIV CF - Physical ; Theoretical Chemistry OECD category Physical chemistry R&D Projects GBP106/12/G015 GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UFCH-W - RVO:61388955 UT WOS 000459890700005 EID SCOPUS 85060592984 DOI 10.1038/s41596-018-0114-6 Annotation High-silica zeolites, some of the most important and widely used catalysts in industry, have potential for application across a wide range of traditional and emerging technologies. The many structural topologies of zeolites have a variety of potential uses, so a strong drive to create new zeolites exists. Here, we present a protocol, the assembly-disassembly-organization-reassembly (ADOR) process, for a relatively new method of preparing these important solids. It allows the synthesis of new high-silica zeolites (Si/Al >1,000), whose synthesis is considered infeasible with traditional (solvothermal) methods, offering new topologies that may find novel applications. We show how to identify the optimal conditions (e.g., duration of reaction, temperature, acidity) for ADOR, which is a complex process with different possible outcomes. Following the protocol will allow researchers to identify the different products that are possible from a reaction without recourse to repetitive and time-consuming trial and error. In developing the protocol, germanium-containing UTL zeolites were subjected to hydrolysis conditions using both water and hydrochloric acid as media, which provides an understanding of the effects of temperature and pH on the disassembly (D) and organization (O) steps of the process that define the potential products. Samples were taken from the ongoing reaction periodically over a minimum of 8 h, and each sample was analyzed using powder X-ray diffraction to yield a time course for the reaction at each set of conditions, selected samples were analyzed using transmission electron microscopy and solid-state NMR spectroscopy. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2020 Electronic address http://hdl.handle.net/11104/0302404
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