Journal
MATERIALS LETTERS
Volume 65, Issue 2, Pages 260-263Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2010.09.050
Keywords
Sol-gel preparation; Characterization methods; Spaced-amine; Diels-Alder reaction; Knoevenagel condensation
Funding
- National Science Foundation of China [20573071]
- Natural Science Foundation of Shanxi Province of China [20041017]
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A novel kind of spaced-amine modified mesoporous silica (SBA-15-NH2) was synthesized via the Diels-Alder reaction of fumaronitrile and cyclopentadienyl-modified SBA-15 (SBA-15-Cp), followed by the reduction of cyano groups using NaBH4/I-2 as reductant and Diglyme as solvent. The synthesized materials were characterized by X-ray diffraction (XRD), N-2-sorption, transmission electron microscopy (TEM), Fourier Transform Infrared (FTIR) and thermogravimetric analysis (TGA). The mesostructure was kept well after reaction with fumaronibrile and the reduction of cyano groups. SBA-15-NH2 has an amine loading of 0.95 mmol NH2/g and shows high activity, selectivity and reusability in the Knoevenagel condensation of benzaldehyde and malononitrile. (C) 2010 Elsevier B.V. All rights reserved.
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