Please use this identifier to cite or link to this item: https://elib.belstu.by/handle/123456789/45540
Title: Synthesis and spectroscopic study of Si, Ti, Mg, AND Zn oxides modified by L-proline
Authors: Koryakova, O. V.
Valova, M. S.
Titova, Yu. A.
Murashkevich, A. N.
Fedorova, O. V.
Keywords: sol-gel synthesis
IR spectroscopy
oxides of silicon
zinc
magnesium
titanium
composites with L-proline
adsorption
Biginelli reaction
catalysts
active centers
золь-гель синтез
ИК-спектроскопия
оксиды кремния
оксиды цинка
оксиды магния
композиты с L-пролин
адсорбция
катализаторы
реакция Биджинелли
L-пролин
Issue Date: 2021
Citation: Synthesis and spectroscopic study of Si, Ti, Mg, AND Zn oxides modified by L-proline / O. V. Koryakova [et al.] // Journal of Applied Spectroscopy. - 2021. - Vol. 88, No. 3, July. - P. 519-527.
Abstract: Individual and mixed oxides of Zn, Mg, Si, and Ti modifi ed with L-proline during their solgel synthesis have been obtained. The IR spectra of these oxides studied in detail show changes in the vibrational band parameters of the siliconoxygen and metal–oxygen bonds. Enhancement of the amount of basic sites on the SiO[2]–TiO[2] mixed oxide was found after removal of L-proline from the surface. The use of SiO[2]–Mg(OH)[2]* L-proline composite as a catalyst leads to an enhanced enantiomeric excess of some asymmetric Biginelli reaction products up to 18%.
URI: https://elib.belstu.by/handle/123456789/45540
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