Abstract
Mono- and bifunctional mesoporous silicas containing the thiourea group ≡Si(CH2)3NHC(S)NHC2H5 or thiourea and various nitrogen-containing groups [≡Si(CH2)3NH2, ≡Si(CH2)3NH(CH2)2NH2, or {≡Si(CH2)3}2NH], respectively, in the surface layer were prepared by template syntheses with cetylpyridinium chloride as a template. The synthesized samples had well-developed porous structures (S sp = 750–1150 m2/g, V c = 0.51–0.72 cm3/g, and d = 2.4–3.5 nm) and high functional group contents (1.0–2.0 mmol/g). Hydrothermal treatment of the mesophases in a mother liquor at 80°C (24 h) improved the structure-adsorption characteristics of the functionalized mesoporous silicas.
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Original Russian Text © E.I. Gona, Yu.L. Zub, N.A. Yaroshenko, Ya. Goworek, 2007, published in Zhurnal Fizicheskoi Khimii, 2007, Vol. 81, No. 3, pp. 399–405.
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Gona, E.I., Zub, Y.L., Yaroshenko, N.A. et al. The template synthesis of mesoporous silicas with the thiourea functional group. Russ. J. Phys. Chem. 81, 328–334 (2007). https://doi.org/10.1134/S0036024407030028
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DOI: https://doi.org/10.1134/S0036024407030028