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Structural stability of aluminosilicate inorganic polymers: Influence of the preparation procedure

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dc.title Structural stability of aluminosilicate inorganic polymers: Influence of the preparation procedure en
dc.contributor.author Kobera, Libor
dc.contributor.author Slavík, Roman
dc.contributor.author Koloušek, David
dc.contributor.author Urbanová, Martina
dc.contributor.author Kotek, Jiří
dc.contributor.author Brus, Jiří
dc.relation.ispartof Ceramics - Silikaty
dc.identifier.issn 0862-5468 OCLC, Ulrich, Sherpa/RoMEO, JCR
dc.date.issued 2011
utb.relation.volume 55
utb.relation.issue 4
dc.citation.spage 343
dc.citation.epage 354
dc.type article
dc.language.iso en
dc.publisher Vysoká škola chemicko-technologická v Praze cs
dc.relation.uri http://www.ceramics-silikaty.cz/2011/2011_04_343.htm
dc.subject Aluminosilicate inorganic polymers en
dc.subject Phase transformation en
dc.subject Solid-state NMR en
dc.description.abstract The stability of amorphous aluminosilicate inorganic polymer (AIP) systems with regard to the structural role of water molecules incorporated in inorganic matrix is discussed. Innovative approach to preparation of amorphous AIP systems with identical chemical composition but differing in structural and mechanical behavior is introduced. It is shown that even small changes in the manufacture dramatically affect mechanical properties and the overall structural stability of AIP systems. If the required quantity of water is admixed to the reaction mixture during the initial step of AIPs synthesis the resulting amorphous aluminosilicate matrix undergoes extensive crystallization (zeolitization). On the other hand, if the amount of water is added to the reaction mixture during the last step of the preparation procedure, the inorganic matrix exhibits long-term stability without any structural defects. To find the structural reasons of the observed behavior a combination of traditional solid state NMR (1H and 29Si MAS NMR, 29Si CP/MAS NMR, 29Si inverse-T1-filtered NMR), XRPD and TGA measurements were used. The applied experiments revealed that the structural stability of AIPs can be attributed to the tight binding of water molecules into the inorganic matrix. The structural stability of the prepared amorphous AIP systems thus seems to be affected by the extent of hydration i.e. the strength of binding water into the inorganic framework. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1002601
utb.identifier.rivid RIV/70883521:28110/11:43865726!RIV12-MSM-28110___
utb.identifier.obdid 43865742
utb.identifier.scopus 2-s2.0-84555187618
utb.identifier.wok 000302337300007
utb.identifier.coden CERSE
utb.source j-scopus
dc.date.accessioned 2012-02-10T13:15:13Z
dc.date.available 2012-02-10T13:15:13Z
utb.contributor.internalauthor Slavík, Roman
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