The Assembly-Disassembly-Organization-Reassembly Mechanism for 3D-2D-3D Transformation of Germanosilicate IWW Zeolite

Hydrolysis of germanosilicate zeolites with the IWW structure shows two different outcomes depending on the composition of the starting materials. Ge‐rich IWW (Si/Ge=3.1) is disassembled into a layered material (IPC‐5P), which can be reassembled into an almost pure silica IWW on treatment with dieth...

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Published inAngewandte Chemie (International ed.) Vol. 53; no. 27; pp. 7048 - 7052
Main Authors Chlubná-Eliášová, Pavla, Tian, Yuyang, Pinar, Ana B., Kubů, Martin, Čejka, Jiří, Morris, Russell E.
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 01.07.2014
WILEY‐VCH Verlag
Wiley Subscription Services, Inc
EditionInternational ed. in English
Subjects
ADOR
Aluminum
Communications
Dismantling
Germanium
germanosilicate
Hydrolysis
IWW
Layered materials
Silicon
solid-state transformation
Three dimensional
Transformations
Zeolites
ADOR
IWW
zeolites
germanosilicate
solid-state transformation
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Summary:Hydrolysis of germanosilicate zeolites with the IWW structure shows two different outcomes depending on the composition of the starting materials. Ge‐rich IWW (Si/Ge=3.1) is disassembled into a layered material (IPC‐5P), which can be reassembled into an almost pure silica IWW on treatment with diethoxydimethylsilane. Ge‐poor IWW (Si/Ge=6.4) is not completely disassembled on hydrolysis, but retains some 3D connectivity. This structure can be reassembled into IWW by incorporation of Al to fill the defects left when the Ge is removed. ADORable zeolites: The Assembly‐Disassembly‐Organization‐Reassembly (ADOR) mechanism is used to manipulate germanosilicate zeolites with the IWW framework type. The outcome of the process depends critically on the Si/Ge ratio in the starting material.
Bibliography:Funded Access
istex:4037AF7E71A44D8241E19B34D439FF801926C257
ark:/67375/WNG-MHTHGFFP-7
Czech Science Foundation - No. P106/12/G015
ArticleID:ANIE201400600
J.Č. thanks the Czech Science Foundation for the support of this research (P106/12/G015). R.E.M. thanks the Royal Society for provision of an industry fellowship and the E.P.S.R.C. for funding (EP/K025112/1). A.B.P. acknowledges the support of the European Community under a Marie Curie Intra-European Fellowship, and Dr. Lynne McCusker for her valuable help with structure analysis. The staff on the Materials Science beamline at the Swiss Light Source in Villigen (Switzerland) is acknowledged for experimental support in the collection of the synchrotron powder diffraction data. We thank Daniel Dawson and Sharon Ashbrook for the NMR data.
E.P.S.R.C. - No. EP/K025112/1
These authors contributed equally to this work.
J.Č. thanks the Czech Science Foundation for the support of this research (P106/12/G015). R.E.M. thanks the Royal Society for provision of an industry fellowship and the E.P.S.R.C. for funding (EP/K025112/1). A.B.P. acknowledges the support of the European Community under a Marie Curie Intra‐European Fellowship, and Dr. Lynne McCusker for her valuable help with structure analysis. The staff on the Materials Science beamline at the Swiss Light Source in Villigen (Switzerland) is acknowledged for experimental support in the collection of the synchrotron powder diffraction data. We thank Daniel Dawson and Sharon Ashbrook for the NMR data.
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ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201400600