29Si-Kernresonanzuntersuchungen an wäßrigen Silicatlösungen / 29Si NMR Studies on Silicate Solutions in Water

Open Access
Publisher Website
Google Scholar
Abstract
29Si NMR measurements show that in waterglass solutions the silicon exists mainly in the form of tetrafunctional branching groups (-107.2 ppm), trifunctional branching groups (—94.6 ppm), middle groups (—86.6 ppm) and end groups at —77.4 ppm. The ortho-silicate anion resonance was found between — 68.7 and —72.3 ppm. The variation is probably due to different degrees of ionization.