Journal
CATALYSIS LETTERS
Volume 141, Issue 10, Pages 1548-1556Publisher
SPRINGER
DOI: 10.1007/s10562-011-0643-x
Keywords
Mesoporous; Nitroaldol; Piperazine; Nanocomposites
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In order to compare the activity and selectivity for the synthesis of beta-nitro alcohols, piperazine was functionalized directly and after surface modification into the ordered mesoporous SBA-15 framework. The materials were characterized by powder X-ray diffraction, N-2-adsorption-desorption isotherm, FT-IR, SS-NMR and scanning electron microscopy. The catalyst synthesized via surface modification under solvent free conditions showed very high activity and selectivity of beta-nitro alcohols compared to the one synthesized by direct functionalization of SBA-15. Finally the possible reaction pathways were explained mechanistically.
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