Investigation of the structural directing effect of (2-hydroxyethyl)trimethylammonium on distribution of the silicate anions using ²⁹Si NMR spectroscopy

详细信息    查看全文

• 作者：Abdolraouf Samadi-Maybodi ; Nasser Goudarzi
• 关键词：(2-Hydroxyethyl)trimethylammonium ; ²⁹Si NMR spectroscopy ; Silicate species ; Structure directing ; Alcoholic silicate solution
• 刊名：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
• 出版年：2006
• 出版时间：November 2006
• 年：2006
• 卷：65
• 期：3-4
• 页码：753-758
• 全文大小：240 K

文摘

The effect of (2-hydroxyethyl)trimethylammonium (2-HETMA) cation on the equilibrium of silicate oligomers in aqueous alkaline silicate solutions was investigated using ²⁹Si NMR spectra. The results indicate role of structural directing of 2-HETMA in which it particularly directs the silicate species to the silicate anion. Results reveal that composition of the alcohols in solution affect the distribution of anionic species. The effect of methanol concentration is also discussed.