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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Acknowledgments
V.V.S., O.A.D. and Y.L.Z. greatly acknowledge the project of scientific collaboration between the Institute of Catalysis and Surface Chemistry of PAS (Krakow) and Chuiko Institute of Surface Chemistry of NAS of Ukraine (No. 0109 U006246, III-01-09). The financial support of the NATO Science for Peace and Security Programme (project No. SfP-984398) and the Technology Agency of the Czech Republic (project No. TA01020804) is gratefully acknowledged (O.S. and P.T.).
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Sliesarenko, V.V., Dudarko, O.A., Zub, Y.L. et al. One-pot synthesis of mesoporous SBA-15 containing protonated 3-aminopropyl groups. J Porous Mater 20, 1315–1321 (2013). https://doi.org/10.1007/s10934-013-9716-0
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DOI: https://doi.org/10.1007/s10934-013-9716-0