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

✍ Scribed by Abdolraouf Samadi-Maybodi; Robin K. Harris; S. Naser Azizi; Alan M. Kenwright

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 118 KB
• Volume: 39
• Category: Article
• ISSN: 0749-1581
• DOI: 10.1002/mrc.868

✦ Synopsis

Abstract

Silicon‐29 NMR spectra were obtained for more than 20 aqueous alkaline silicate solutions containing methanol. A signal assigned to CH~3~OSi(OH)~3~ or one of its deprotonated congeners was studied in detail for the first time for the solution conditions involved. Its appearance was monitored as a function of the solution compositions. The pseudo‐equilibrium constant for its formation is of the order of 0.65. Copyright © 2001 John Wiley & Sons, Ltd.