Journal
JOURNAL OF CATALYSIS
Volume 222, Issue 2, Pages 410-418Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2003.11.016
Keywords
aminopropyl silica; base catalyst; nitroaldol condensation; nitroalkene; hybrid organic-inorganic material; infrared
Categories
Ask authors/readers for more resources
Various aminopropyl-functionalized silicas (APS) were prepared by the sol-gel technique using different tetraethyl orthosilicate/aminopropyltriethoxysilane (TEOS/ATS) ratios and tested as base catalysts for the nitroaldol reaction. The solids were fully characterized. It was proved that the amount of organic component strongly influences the composition and textural properties of the hybrid organic-inorganic materials. In particular, when ATS was increased to more than 40%, pore volume collapse was observed and a significant decrease in interaction with benzaldehyde reagent was revealed by FT-IR. Catalytic activity in the nitroaldol reaction was correlated with chemical composition and textural properties, suggesting that the catalyst efficiency depends on accessibility to the catalytic sites. In all cases, (E)nitrostyrene was selectively obtained. (C) 2003 Elsevier Inc. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available