Silicon-29 NMR study of the formation of monomethoxysilicic acid in methanolic alkaline silicate solutions

Authors
Samadi-Maybodi, A Harris, RK Azizi, SN Kenwright, AM
Citation
A. Samadi-maybodi et al., Silicon-29 NMR study of the formation of monomethoxysilicic acid in methanolic alkaline silicate solutions, MAGN RES CH, 39(8), 2001, pp. 443-446
Citations number
13
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
MAGNETIC RESONANCE IN CHEMISTRY
ISSN journal
07491581 → ACNP
Volume
39
Issue
8
Year of publication
2001
Pages
443 - 446
Database
ISI
SICI code
0749-1581(200108)39:8<443:SNSOTF>2.0.ZU;2-5
Abstract
Silicon-29 NMR spectra were obtained for more than 20 aqueous alkaline sili cate solutions containing methanol. A signal assigned to CH3OSi(OH)(3) or o ne of its deprotonated congeners was studied in detail for the first time f or the solution conditions involved. Its appearance was monitored as a func tion of the solution compositions. The pseudo-equilibrium constant for its formation is of the order of 0.65. Copyright (C) 2001 John Wiley & Sons, Lt d.