Monitoring the assembly-disassembly-organisation-reassembly process of germanosilicate UTL through in situ pair distribution function analysis

Susan E. Henkelis, Sam A. Morris, Michal Mazur, Paul S. Wheatley, Lauren N. McHugh, Russell Morris

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Abstract

A study into the disassembly and organisation steps of the ADOR process has been undertaken through in situ Pair Distribution Function (PDF) analysis. Three aqueous systems (water, 6 M HCl and 12 M HCl) were introduced to a parent zeolite germanosilicate UTL in a cell. Hydrolysis could be clearly seen when UTL was exposed to water over a period of 8 hr, forming the disorded layered material, IPC-1P. In hydrochloric acid, the hydrolysis step is too quick to observe and a Ge-Cl containing species could be seen. In 6 M HCl, the rearrangement of the interlayer region began after an induction period of 8 hr, with the process still occuring after 15 hr. In 12 M HCl, the rearrangement appears to have come to an end after only 6 hr.
Original languageEnglish
Number of pages9
JournalJournal of Materials Chemistry
VolumeIn Press
Early online date6 Aug 2018
DOIs
Publication statusE-pub ahead of print - 6 Aug 2018

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