Sustainable isosorbide production by a neat one-pot MW-assisted catalytic glucose conversion
Articolo
Data di Pubblicazione:
2023
Abstract:
n the context of exploitation of new biomass-derived platform chemicals, isosorbide (1,4:3,6-dianhydro-D-sor-
bitol), obtained by the two-fold dehydration of sorbitol, is gaining increasing interest in several potential in-
dustrial applications. Seeking for more sustainable, efficient, and economically competitive green processes, the
use of heterogeneous catalysts under microwave (MW) irradiation has been adopted for the development of a
neat one-pot process from glucose. MW-assisted catalytic processes have shown the potential to reduce the re-
action time and improve the selectivity, due to the interaction of MW with the reaction medium through the
production of hot spots on the catalyst surface. Ru/C, Ru/Al2O3 and Ru/TiO2 were tested for glucose hydro-
genation to sorbitol, while the dehydration step was favored by the addition of β Zeolites (360:1 SiO2:Al2O3)
allowing high isosorbide selectivity (>85 %). An extended structural and morphological characterization before
and after the catalytic tests allowed to establish structure-activity relationships. Yields up to 47.1 % have been
obtained directly from glucose in 1.5 h, achieving a considerable reduction of reaction time without the use of a
solvent. thus paving the way for further investigations on biomass conversion into value-added products.
With this aim, direct isosorbide production from milled cellulose was investigated. While the isosorbide yields
still need to be improved, the dual role of formic acid both as acid catalyst for cellulose hydrolysis and H-donor
for the reduction step was promisingly clarified
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
Isosorbide, One-pot conversion, Zeolites, Microwaves, Ruthenium-based heterogeneous catalysts
Elenco autori:
Belluati, M.; Tabasso, S.; Bucciol, F.; Tabanelli, T.; Cavani, F.; Cravotto, G.; Manzoli, M.
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