A procedure has been developed for synthesis of new polysiloxane xerogels with propionic and butyric acid-type groups. The procedure is based on the sol-gel method and involves the conversion of 2-cyanoethyltriethoxysilane (or 4-(triethoxysilyl)butyronitrile) to an ester with its subsequent hydrolytic polycondensation reaction. The conversion proceeds under mild conditions and requires a gaseous HCl and the presence of tetraethoxysilane, Si(OC2H5)4. The IR and <$E nothing sup 13 roman C> CP/MAS NMR spectroscopy studies showed that some carboxylic groups were converted to an ester as Si(CH2)2 or С(О)ОС2Н5 using this procedure. Nitrogen adsorption analysis indicated that the resulting samples possessed pores on the borderline between micro- and mesopores (average micropore width was equal to 2,1 - 2,2 nm) and exhibited high BET specific surface areas (<$E 370~-~680~roman {m sup 2 "/" g}>).

• Дударко Оксана Анатолівна (фізико-математичні науки)
• Зуб Юрій Леонідович (1947–2016) (хімічні науки)

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