Szczegóły publikacji
Opis bibliograficzny
Infrared spectroscopic study of octahydridooctasilsesquioxane hydrolytic polycondensation / Mirosław HANDKE, Magdalena KWAŚNY // Vibrational Spectroscopy ; ISSN 0924-2031. — 2014 — vol. 74, s. 127–131. — Bibliogr. s. 130–131, Abstr. — XIIth international conference on Molecular spectroscopy : Kraków-Białka Tatrzańska, Poland, September 8–12, 2013
Autorzy (2)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 88468 |
|---|---|
| Data dodania do BaDAP | 2015-04-17 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.vibspec.2014.05.007 |
| Rok publikacji | 2014 |
| Typ publikacji | referat w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Vibrational Spectroscopy |
Abstract
Spectroscopic studies are very important to characterize the structure of amorphous mesoporous silica. In this study, mesoporous silica was obtained by hydrolytic polycondensation of octahydridooctasilsesquioxane and tetraethoxysilane. Infrared spectra of the reaction products and commercially available different forms of amorphous silica were measured. Spectra were analyzed directly and after the decomposition process using a band fitting procedure. In a hydrolytic polycondensation process both, alkoxy groups in tetraethoxysilane and hydrogen atoms in octahydridooctasilsesquioxane are transformed to reactive Si-OH groups which can subsequently condense forming Si-O-Si bridges. However, as evidenced, not all Si-OH groups react. The main bands in the spectra of the obtained xerogels are due to the vibrations of SiO4 group: v(as)Si-O-Si, v(s)Si-O-Si and delta O-Si-O. The bands due to Si H and Si OH vibrations are also observed. (C) 2014 Elsevier B.V. All rights reserved.