Title: Sulfonic acid bearing mesoporous materials as catalysts in furan and polyol derivatization
Authors: Van Rhijn, W ×
De Vos, Dirk
Bossaert, Wim
Bullen, J
Wouters, Bart
Grobet, Pierre
Jacobs, Pierre #
Issue Date: 1998
Publisher: Elsevier
Series Title: Studies in Surface Science and Catalysis vol:117 pages:183-190
Abstract: We have designed new acid catalysts by incorporation of propylsulfonic acid groups into MCM and HMS type structures, with HS-(CH2)(3)-Si(OR')(3) as the building block. Material synthesis was either primary, via sol-gel processing of TEOS and HS-(CH2)(3)-Si(OMe)(3) in the presence of an ionic or neutral template, or secondary, via silylation of a pre-synthesized MCM support. The eventual surface modification towards -(CH2)(3)-SO3H was assessed with C-13-NMR, IR, sorption measurements and TGA. In the catalytic work, two reaction types, which are inherently difficult even with optimal acid zeolites are discussed. First, 2,2-[bis-(5-methylfuryl)propane is formed by condensation of two methylfurans (MF) and acetone. With propylsulfonic acid MCMs, the furan oligomerization is largely circumvented and furan-based yields are increased from 40% (for H-P) to over 80%. In the esterification of sorbitol with long fatty acids, zeolites are hardly active; however, at the hydrophobic surface of the propylsulfonic acid MCMs, both reactant phases are brought into intimate contact and this results in considerable catalytic activity.
ISSN: 0167-2991
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Surface Chemistry and Catalysis
Algebra Section
× corresponding author
# (joint) last author

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