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Research article2013Peer reviewed

One-pot synthesis of mesoporous SBA-15 containing protonated 3-aminopropyl groups

Sliesarenko, Valeria; Dudarko, Oksana; Zub, Yuriy; Seisenbaeva, Gulaim; Kessler, Vadim; Topka, Pavel; Solcova, Olga

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: S-BET = 460 m(2) g(-1), V-total = 0.79 cm(3)g(-1) and d = 7.1 nm. FTIR and C-13 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.).

Keywords

Template method; Mesoporous silica; Alkyl ammonium groups; Molybdophosphoric acid immobilization

Published in

Journal of Porous Materials
2013, Volume: 20, number: 5, pages: 1315-1321
Publisher: SPRINGER