کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1406598 | 1501832 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Application of 29Si NMR spectroscopy to study of alkaline aqueous and alcoholic tetraoctylammonium (TOA) silicate solutions
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
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چکیده انگلیسی
29Si NMR spectroscopy is a powerful tool for studying the silicate species existing in aqueous and non-aqueous solutions. In the present work, 29Si NMR spectroscopy is used to characterize the species present in alkaline alcoholic solutions of silicates. Tetraoctylammonium (TOA) hydroxide is used as a template. The effects of polymerization/depolymerization of silicate anions on alkaline alcoholic solutions are investigated using different alcohols (methanol, 1-propanol, 1,3-propane-diol, and glycerin) by 29Si NMR spectroscopy. The esterification of monomeric silicate, Si(OH)4, in the presence of different alcohols is also studied. Esterification of Si(OH)4 depends on the alkyl chain as well as the number of hydroxyl groups present in the alcohol.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 982, Issues 1â3, 8 October 2010, Pages 127-132
Journal: Journal of Molecular Structure - Volume 982, Issues 1â3, 8 October 2010, Pages 127-132
نویسندگان
Nasser Goudarzi, M. Arab Chamjangali, G. Bagherian,