Please use this identifier to cite or link to this item: doi:10.22028/D291-23925
Title: Determination of silicate anion constitution in glassy and crystalline lead silicates using an improved TMS technique
Author(s): Hoebbel, Dagobert
Götz, J.
Vargha, Anna
Wieker, Wolfgang
Language: English
Year of Publication: 1984
OPUS Source: Journal of non-crystalline solids. - 69. 1984, S. 149-159
SWD key words: Bestimmung
DDC notations: 540 Chemistry
Publikation type: Journal Article
Abstract: Using the DMF trimethylsilylation technique developed by Tamás, Sarkar and Roy, the distribution of silicate anions in lead silicate glasses of the composition range PbO·SiO2---4PbO· SiO2 has been reinvestigated. The obtained results agree with earlier findings except for the tetrameric chain anion [SiO4O13]10-, which had not been found before. Crystallization of glassy PbO·SiO2 proceeds via the formation of low-molecular silicate anions [Si2O7]6-, [Si4O13](II)10- and [Si7O22]16-, which characterize the low-temperature crystalline polymorph T---PbO·SiO2. Further heat treatment turns T---PbO·SiO2 into alamosite, characterized by polysilicate chain anions [SiO32-]8.
Link to this record: urn:nbn:de:bsz:291-scidok-19284
Date of registration: 19-Dec-2008
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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