Please use this identifier to cite or link to this item: doi:10.22028/D291-24313
Title: Iron(II)- or vanadium(IV)-containing siliceous gels
Author(s): Hutter, Frank
Schmidt, Helmut K.
Scholze, Horst
Language: English
Year of Publication: 1986
OPUS Source: Journal of non-crystalline solids. - 82. 1986, S. 373-377
SWD key words: Vanadium
DDC notations: 620 Engineering and machine engineering
Publikation type: Journal Article
Abstract: Iron(II)-containing SiO2 gels can be prepared by the hydrolysis and condensation of tetramethoxysilane in methanolic solutions of iron(II) chloride. These gels show an absorption at 1000 nm indicating the presence of iron(II). In opposition to that, iron(II) cannot be introduced into organically modified gels of the 3-glycidyloxypropyltrimethoxysilane type. Vanadium(IV) can be incorporated into both gels. Unlike the SiO2 gels, the organically modified gels are compact and elastic. The spectra of the vanadium(IV)-containing gels show a characteristic absorption at about 800 nm. In some cases these gels change theirs colours with time, presumably due to the exchange of ligands in the coordination sphere of vanadium.
Link to this record: urn:nbn:de:bsz:291-scidok-26004
Date of registration: 29-Dec-2009
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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