Synthesis, Characterization And Catalytic Application Of ordered Mesoporous Silica Nanocomposites Functionalized with Chloroacetic Acid (SBA-15/CA)
Advanced Materials Letters,
2013, Volume 4, Issue 1, Pages 39-45
In order to develop the mild acidic nanocatalyst, ordered mesoporous silica, SBA -15 was functionalized with chloroacetic acid (SBA/CA) via post synthetic grafting technique for useful acidic conversions such as Knoveneganel condensation, Biginelli synthesis and Mannich reaction. The nanocomposites were characterized by Powder X-ray Diffraction method, N2 adsorption-desorption isotherm, 13C CP-MAS NMR, FT-IR, TPD and EDXRF. Very high activity and selectivity was observed for all the conversions under milder reaction conditions. Finally, the mechanism of the reaction is proposed and discussed.
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