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Transesterification reactions over morphology controlled amino-functionalized SBA-15 catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
52391 46872 2008 6 PDF Available
Title
Transesterification reactions over morphology controlled amino-functionalized SBA-15 catalysts
Abstract

The amino-functionalized SBA-15 (NH2-SBA-15) catalysts have been synthesized by different approaches such as direct co-condensation, prehydrolysis of sodium metasilicate, and post synthetic-grafting methods in order to get different morphologies by using the amphiphilic triblock copolymer, pluronic P123 as a surfactant and 3-aminopropyltriethoxysilane (APTES) as a precursor of functional groups under a strong acidic condition. The functionalized materials were confirmed with X-ray diffraction (XRD), N2 gas adsorption/desorption studies, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and the amount of amino-groups was evaluated by TGA analyses. Catalytic transesterification reactions of diethylmalonate with various aliphatic and aromatic alcohols were investigated over the amino-functionalized SBA-15 catalysts. Among the functionalized catalysts, the material synthesized via direct co-condensation method which had short channeled hexagonal platelet morphology exhibited enhanced catalytic activities with normal aliphatic alcohols than other fibrous type catalysts. The activities of the catalysts were found to be very much dependent on morphologies, dispersion of amino groups and molecular shape of alcohols.

Keywords
NH2-SBA-15; Morphology; Transesterification; Heptanol; 2-Ethyl-1-hexanol
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Transesterification reactions over morphology controlled amino-functionalized SBA-15 catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 1, January 2008, Pages 158–163
Authors
, , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us