In situ flow pair distribution function analysis to probe the assembly-disassembly-organisation-reassembly (ADOR) mechanism of zeolite IPC-2 synthesis.

Autor:	Russell SE; School of Chemistry, University of St. Andrews North Haugh St. Andrews Fife KY16 9ST UK rem1@st-andrews.ac.uk., Henkelis SE; School of Chemistry, University of St. Andrews North Haugh St. Andrews Fife KY16 9ST UK rem1@st-andrews.ac.uk., Vornholt SM; School of Chemistry, University of St. Andrews North Haugh St. Andrews Fife KY16 9ST UK rem1@st-andrews.ac.uk., Rainer DN; School of Chemistry, University of St. Andrews North Haugh St. Andrews Fife KY16 9ST UK rem1@st-andrews.ac.uk., Chapman KW; X-ray Science Division, Advanced Photon Source, Argonne National Laboratory Lemont IL 60439 USA., Morris RE; School of Chemistry, University of St. Andrews North Haugh St. Andrews Fife KY16 9ST UK rem1@st-andrews.ac.uk.
Jazyk:	angličtina
Zdroj:	Materials advances [Mater Adv] 2021 Oct 13; Vol. 2 (24), pp. 7949-7955. Date of Electronic Publication: 2021 Oct 13 (Print Publication: 2021).
DOI:	10.1039/d1ma00335f
Abstrakt:	The assembly-disassembly-organisation-reassembly (ADOR) process is an important tool to access zeolite structures that are otherwise unfeasible via hydrothermal methods. In situ flow pair distribution function (PDF) analysis has been used to probe the mechanism of the disassembly and organisation steps, with the disassembly a rapid step that is often difficult to capture. Zeolite UTL was hydrolysed by 6 M hydrochloric acid, with PDF measurements used to monitor framework alterations as the reaction proceeded. The resulting disassembly mechanism shows an initial rapid removal of germanium from the germanium-rich double 4 rings (d4r), followed by silicon rearrangement and gradual silanol condensation to form IPC-2P. Competing Interests: There are no conflicts to declare. (This journal is © The Royal Society of Chemistry.)
Databáze:	MEDLINE
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