Metadata of CSIR Papers
View Archive Info| Field | Value | |
| Creator |
Jose, T
Sudheesh, N Shukla, RS |
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| Subject |
Chemistry
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| Description |
An aminopropyltrimethoxysilane functionalized chitosan was found to be an efficient solid base catalyst for the self-aldol condensation of linear aldehydes under solvent-free conditions. The modified catalyst was characterized using physical techniques, elemental analysis, FT-IR, and TGA. The modified chitosan was evaluated for the aldol condensation of C(3)-C(7) linear aldehydes in which the selective formation was obtained for alpha,beta-unsaturated aldehydes. A decreasing trend in the conversion from propanal to heptanal was observed. Propanal and pentanal were subjected for detail investigations to study the effect of parameters like amount of catalyst and aldehyde, and temperature on the conversion and selectivity. Kinetic performance of the modified chitosan investigated for a representative aldehyde, pentanal showed that the rate was increased with the catalyst amount, pentanal and temperature. The catalyst was reused up to six cycles without significant loss in its activity and selectivity. (C) 2010 Elsevier B.V. All rights reserved.
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| Publisher |
ELSEVIER SCIENCE BVAMSTERDAMPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
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| Date |
2011-09-20T12:03:05Z
2011-09-20T12:03:05Z 2010 |
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| Type |
Article
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| Identifier |
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
1381-1169 http://hdl.handle.net/123456789/12166 |
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| Language |
English
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