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Sulfonic acid functionalized mesoporous SBA-15 for selective synthesis of 4-phenyl-1,3-dioxane

Paper ID Volume ID Publish Year Pages File Format Full-Text
52829 46890 2007 6 PDF Available
Title
Sulfonic acid functionalized mesoporous SBA-15 for selective synthesis of 4-phenyl-1,3-dioxane
Abstract

Mesoporous SBA-15 silica has been functionalized with propylsulfonic acid groups post-synthetically using 3-mercaptopropyltrimethoxysilane as sulfur source. The materials before and after functionalization have been characterized by BET surface area and pore size distribution by BJH method, powder X-ray diffraction and temperature programmed desorption (TPD) of NH3. The resultant mesoporous material (solid acid catalyst) exhibited hexagonal mesoscopic ordering, which possess 1.3 meq H+ g−1 SiO2 exchange capacity, 96 Å mesopore size diameter, and 660 m2 g−1surface area. Sulfonic acid groups anchored to SBA-15 silica pore surfaces are thermally stable up to 653 K, hydrothermally robust in boiling water and resistant to leaching in organic and aqueous solvents under mild conditions. XRD results indicate that there is no change in the structure after anchoring SBA-15 with SO3H group. SBA-15-SO3H catalyst has been found to be highly active and selective for the Prins condensation of styrene with formaldehyde. Both the conversion of styrene and the selectivity to 4-phenyl-1,3-dioxane are nearly 100%. Presence of more number of acid sites in SBA-15-SO3H catalyst helps in achieving high yields. Furthermore, the conversion and the selectivity to 4-phenyl-1,3-dioxane are found to be consistent in four repeated cycles.

Keywords
SBA-15; Prins condensation; Styrene; 4-Phenyl-1,3-dioxane; SBA-15-SO3H
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Sulfonic acid functionalized mesoporous SBA-15 for selective synthesis of 4-phenyl-1,3-dioxane
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 3, March 2007, Pages 261–266
Authors
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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