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

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Henkelis_2018_JMCA_GermanosilicateUTL_AAM.pdf (1.825Mb)
Date
06/08/2018
Author
Henkelis, Susan E.
Morris, Sam A.
Mazur, Michal
Wheatley, Paul S.
McHugh, Lauren N.
Morris, Russell
Keywords
QD Chemistry
NDAS
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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.
Citation
Henkelis , S E , Morris , S A , Mazur , M , Wheatley , P S , McHugh , L N & Morris , R 2018 , ' Monitoring the assembly-disassembly-organisation-reassembly process of germanosilicate UTL through in situ pair distribution function analysis ' , Journal of Materials Chemistry , vol. In Press . https://doi.org/10.1039/C8TA04320E
Publication
Journal of Materials Chemistry
Status
Peer reviewed
DOI
https://doi.org/10.1039/C8TA04320E
ISSN
0959-9428
Type
Journal article
Rights
© 2018 The Author(s). This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at: https://doi.org/10.1039/C8TA04320E
Description
The authors would like to thank: The EPSRC (grants: EP/K025112/1; EP/K005499/1; EP/K503162/1) for funding opportunities and beam line I15 at the Diamond Light Source. Phoebe Allan is acknowledged for her help and knowledge of PDF refinement. M.M. and R.E.M. would like to acknowledge OP VVV "Excellent Research Teams", project No. CZ.02.1.01/0.0/0.0/15_003/0000417 - CUCAM.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/18253

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