Please use this identifier to cite or link to this item: doi:10.22028/D291-24307
Title: Mechanisms and kinetics of the hydrolysis and condensation of alkoxides
Author(s): Schmidt, Helmut K.
Scholze, Horst
Language: English
Year of Publication: 1985
OPUS Source: 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 key words: Hydrolyse
DDC notations: 620 Engineering and machine engineering
Publikation type: Conference Paper
Abstract: 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 to this record: urn:nbn:de:bsz:291-scidok-25953
ISBN: 90-247-3155-0
Date of registration: 28-Dec-2009
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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