One-pot synthesis of mesoporous SBA-15 containing protonated 3-aminopropyl groups |
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Authors: | Valeriia V. Sliesarenko Oksana A. Dudarko Yuriy L. Zub Gulaim A. Seisenbaeva Vadim G. Kessler Pavel Topka Olga Šolcová |
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Affiliation: | 1. Chuiko Institute of Surface Chemistry, NAS of Ukraine, 17 General Naumov Str, Kyiv, 03164, Ukraine 2. Deparment of Chemistry, Swedish University of Agricultural Sciences, 750 07, Uppsala, Sweden 3. Institute of Chemical Process Fundamentals of the ASCR, v. v. i., Rozvojová 135, 165 02, Prague 6, Czech Republic
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Abstract: | A new technique of synthesis of mesoporous silica with protonated amino groups avoiding microwave treatment of mesophase was developed using a template method. The block-copolymer P123 was used as a template and sodium meta-silicate with 3-aminopropyltriethoxysilane as precursors. After the removal of template from mesophase with boiling ethanol, the obtained sample displayed highly ordered hexagonal structure with attractive textural parameters: SBET = 460 m2 g?1, Vtotal = 0.79 cm3g?1 and d = 7.1 nm. FTIR and 13C CP/MAS NMR spectroscopy revealed the presence of alkyl ammonium groups (0.7 mmol g?1) that were able to attach anions of molybdophosphoric acid to the surface of the synthesized mesoporous material. The resulting anion-ion exchange phase can find applications in many areas (adsorption, catalysis, etc.). |
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