Structural role of zirconium in SiO2-ZrO2 gels: evidence from 17O NMR

17O MAS NMR was applied to SiO2-ZrO2 mixed alkoxide derived gels. It demonstrated unambiguously that Zr-O-Si bonds are formed during gelling and that there was almost complete solid solution of Zr into the SiO2 network. Preliminary results on a ternary SiO2-TiO2-ZrO2 gel clearly indicate that Ti and...

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Veröffentlicht in:	Journal of materials chemistry 1995, Vol.5 (8), p.1261-1263
Hauptverfasser:	DIRKEN, P. J, RAY DUPREE, SMITH, M. E
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Sprache:	eng
Schlagworte:	Chemistry Colloidal gels. Colloidal sols Colloidal state and disperse state Exact sciences and technology General and physical chemistry
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container_title	Journal of materials chemistry
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creator	DIRKEN, P. J RAY DUPREE SMITH, M. E
description	17O MAS NMR was applied to SiO2-ZrO2 mixed alkoxide derived gels. It demonstrated unambiguously that Zr-O-Si bonds are formed during gelling and that there was almost complete solid solution of Zr into the SiO2 network. Preliminary results on a ternary SiO2-TiO2-ZrO2 gel clearly indicate that Ti and Zr have different chemical behaviour in these systems. 16 refs.
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It demonstrated unambiguously that Zr-O-Si bonds are formed during gelling and that there was almost complete solid solution of Zr into the SiO2 network. Preliminary results on a ternary SiO2-TiO2-ZrO2 gel clearly indicate that Ti and Zr have different chemical behaviour in these systems. 16 refs.</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><tpages>3</tpages></addata></record>
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source	Royal Society Of Chemistry Journals; Royal Society of Chemistry Journals Archive (1841-2007)
subjects	Chemistry Colloidal gels. Colloidal sols Colloidal state and disperse state Exact sciences and technology General and physical chemistry
title	Structural role of zirconium in SiO2-ZrO2 gels: evidence from 17O NMR
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