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

被引：7
|
作者：
Samadi-Maybodi, A
Harris, RK
Azizi, SN
Kenwright, AM
机构：
[1] Univ Durham, Dept Chem, Durham DH1 3LE, England
[2] Mazandaran Univ, Fac Basic Sci, Dept Chem, Babol Sar, Iran
来源：
MAGNETIC RESONANCE IN CHEMISTRY | 2001年 / 39卷 / 08期
关键词：
NMR; Si-29; silicate solutions; monomethoxysilicic acid; equilibria;
D O I：
10.1002/mrc.868
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Silicon-29 NMR spectra were obtained for more than 20 aqueous alkaline silicate solutions containing methanol. A signal assigned to CH3OSi(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 (C) 2001 John Wiley & Sons, Ltd.
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页码：443 / 446
页数：4
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