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Titel: Mechanisms and kinetics of the hydrolysis and condensation of alkoxides
Verfasser: Schmidt, Helmut K.
Scholze, Horst
Sprache: Englisch
Erscheinungsjahr: 1985
Quelle: Glass ... current issues : [proceed. of the NATO Advanced Study Inst. on Glass.... Current Issues, Tenerife, Spain, April 2 - 13, 1984] / ed. by A. F. Wright ... - Dordrecht [u.a.] : Nijhoff, 1985. - (NATO ASI series / E ; 92), S. 263-280
SWD-Schlagwörter: Hydrolyse
Kondensation
Alkoholate
Monomere
Solvatation
Polymerisation
DDC-Sachgruppe: 620 Ingenieurwissenschaften und Maschinenbau
Dokumentart : InProceedings (Aufsatz / Paper einer Konferenz etc.)
Kurzfassung: Hydrolysis and condensation of alkoxides involve different reaction steps. Generally the first step is the dissolution of monomers in organic solvents like alcohols. The second step is hydrolysis, where in most cases condensation may not be separated. Dissolution may incorporate solvatation, coordination, complexation of polymerization. The addition of water leads to hydrolysis of Si-O-C bonds and subsequently condensation of silanoles takes place. Another possibility of reaction is the hydrolysis-free condensation. As a functionof reaction conditions and starting material different possibilities and mechanisms may take place. General conclusions are hardly to be drawn, since the comparison of data is difficult. In the paper theoretical models are reviewed and compared with experimental data. Conclusions with respect to the formation of solid materials are drawn.
Link zu diesem Datensatz: urn:nbn:de:bsz:291-scidok-25953
hdl:20.500.11880/24363
http://dx.doi.org/10.22028/D291-24307
ISBN der Druckausgabe: 90-247-3155-0
SciDok-Publikation: 28-Dez-2009
Fakultät: Sonstige Einrichtungen
Fachrichtung: SE - INM Leibniz-Institut für Neue Materialien
Fakultät / Institution:INM
SE - Sonstige Einrichtungen

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