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Title:Molecular growth pathways in silica sol-gel polymerization
Author(s):Ramamurthi, Sangeeta Dikshit
Doctoral Committee Chair(s):Klemperer, Walter G.
Department / Program:Chemistry
Discipline:Chemistry
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:Ph.D.
Genre:Dissertation
Subject(s):Chemistry, Inorganic
Abstract:An analytical protocol involving gas chromatography (GC), gas chromatography-mass spectrometry (GCMS), and 29Si{1H} NMR spectroscopy, was developed to determine the structures of the polysilicate intermediates formed during silica sol-gel polymerization. This protocol allowed the structural identification of mono- through hexasilicate species (1The analytical protocol employing capillary gas chromatography was applied to monitor the stoichiometry, structures, and abundances of low molecular weight polysilcates (lA procedure was also developed to prepare monolithic silica glasses from mono-, tri-, and octasilicate precursors, under acidic (HCl) and basic (KOH) conditions. Bulk density measurements of these monoliths indicated that the octasilicate monoliths were relatively dense.
Issue Date:1989
Type:Text
Language:English
URI:http://hdl.handle.net/2142/19234
Rights Information:Copyright 1989 Ramamurthi, Sangeeta Dikshit
Date Available in IDEALS:2011-05-07
Identifier in Online Catalog:AAI8924925
OCLC Identifier:(UMI)AAI8924925


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