IR Spectroscopic Study of the Basicity of Aminated Silica Gels Full article
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Russian Journal of Inorganic Chemistry
ISSN: 0036-0236 , E-ISSN: 1531-8613 |
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| Output data | Year: 2009, Volume: 54, Number: 11, Pages: 1798-1803 Pages count : 6 DOI: 10.1134/S0036023609110163 | ||
| Tags | Group Content; Ethoxy Group; Drift Spectrum; SiOH Group; Amino Group Content | ||
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Abstract:
The aminated silica gels SiO2/SOCl2/NH3 (I), SiO2/SiCl4/NH3 (II), SiO2/BCl3/NH3 (III), and SiO2/γ-aminopropyltriethoxysilane (SiO2/APTES, IV) have been synthesized. According to DRIFT spectroscopy and chemical analysis data, the surface amino groups of I–III are “free,” while those of IV interact with the surface OH groups of the silica gel and with one another. The strength of basic sites has been measured on the proton affinity (PA) scale as the shift of the ν(CD) band of adsorbed deuterochloroform. The basicity of an aminated silica gel depends on its chemical composition. Silica gel IV (PA = 938 kJ/mol) is a stronger base than I–III (PA = 829 kJ/mol). As the basicity of the NH2 group decreases, the N-H stretching band shifts to higher frequencies.
Cite:
Panchenko V.N.
, Pozimenko V.A.
, Paukshtis E.A.
, Zakharov V.A.
IR Spectroscopic Study of the Basicity of Aminated Silica Gels
Russian Journal of Inorganic Chemistry. 2009. V.54. N11. P.1798-1803. DOI: 10.1134/S0036023609110163 WOS Scopus РИНЦ OpenAlex
IR Spectroscopic Study of the Basicity of Aminated Silica Gels
Russian Journal of Inorganic Chemistry. 2009. V.54. N11. P.1798-1803. DOI: 10.1134/S0036023609110163 WOS Scopus РИНЦ OpenAlex
Original:
Панченко В.Н.
, Позименко В.А.
, Паукштис Е.А.
, Захаров В.А.
Исследование основных свойств аминосодержащих силикагелей методом ИК-спектроскопии
Журнал неорганической химии. 2009. Т.54. №11. С.1882-1882. РИНЦ ANCAN
Исследование основных свойств аминосодержащих силикагелей методом ИК-спектроскопии
Журнал неорганической химии. 2009. Т.54. №11. С.1882-1882. РИНЦ ANCAN
Dates:
| Submitted: | May 14, 2008 |
| Published print: | Nov 1, 2009 |
| Published online: | Nov 13, 2009 |
Identifiers:
| Web of science: | WOS:000271751600016 |
| Scopus: | 2-s2.0-70450191953 |
| Elibrary: | 15300426 |
| OpenAlex: | W2083360612 |