Arenesulfonic acid functionalized ordered mesoporous silica as solid acid catalyst for solvent free dehydration of sorbitol to isosorbide

Organosulfonic acid functionalized ordered mesoporous silicas with different moieties have been synthesized and used as solid acid catalysts for solvent free dehydration of sorbitol to isosorbide. In screening experiments with distinct solid acids, the arenesulfonic acid functionalized SBA-15 (Ar/SB...

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Bibliographic Details
Published in:Catalysis communications 2015-09, Vol.69, p.207-211
Main Authors: Dabbawala, Aasif A., Park, Jung J., Valekar, Anil H., Mishra, Dinesh K., Hwang, Jin-Soo
Format: Article
Language:English
Subjects:
Dehydration
Isosorbide
Mesoporous organosilica
Selectivity
Sorbitol
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Summary:Organosulfonic acid functionalized ordered mesoporous silicas with different moieties have been synthesized and used as solid acid catalysts for solvent free dehydration of sorbitol to isosorbide. In screening experiments with distinct solid acids, the arenesulfonic acid functionalized SBA-15 (Ar/SBA-15) showed higher catalyst performance as compared to propyl and fluorosulfonic acid sites. Under optimum reaction condition, Ar/SBA-15 afforded 100% sorbitol conversion with 71% isosorbide selectivity in 2h at moderate temperature of 170°C. The high activity of catalyst ascribed to its ordered mesoporous structure and ease to access Brönsted acid sites with high acid strength. [Display omitted] •Solvent free dehydration of sorbitol investigated using –SO3H functionalized SBA-15•Isosorbide formation influenced by type of organoacid site and porous structure•Arene –SO3H modified SBA-15 (Ar/SBA-15) showed higher catalyst performance.•Ar/SBA-15 exhibited high isosorbide selectivity (71%) at moderate temperature.
ISSN:1566-7367
1873-3905
DOI:10.1016/j.catcom.2015.06.017