abstract
The one-pot acid-catalysed conversion of mono/di/polysaccharides (inulin, xylan, cellobiose, sucrose, glucose, fructose, xylose) into 2-furfuraldehyde (FUR) or 5-hydroxymethylfurfural (HMF) in the presence of aluminium-containing mesoporous TUD-1 (denoted as Al-TUD-1, Si/Al = 21), at 170 degrees C was investigated. Xylose gave 60% FUR yield after 6 h reaction; hexose-based mono/disaccharides gave less than 20% HMF yield; polysaccharides gave less than 20 wt % FUR or HMF yields after 6 h. For four consecutive 6 h batches of the xylose reaction in the presence of Al-TUD-1, the FUR yields achieved were similar, without significant changes in Si/Al ratio.
keywords
LIQUID-PHASE DEHYDRATION; H-FORM ZEOLITES; D-XYLOSE; HIGH-TEMPERATURE; D-FRUCTOSE; MOLECULAR-SIEVES; ALUMINOSILICATE; GLUCOSE; WATER; HYDROLYSIS
subject category
Chemistry
authors
Lima, S; Antunes, MM; Fernandes, A; Pillinger, M; Ribeiro, MF; Valente, AA
our authors
Anabela Tavares Aguiar Valente
Principal Researcher
Maria Margarida Feitor Pintão Moreno Antunes
Junior Researcher
Martyn Pillinger
Junior ResearcherGroups
1 - inorganic functional nanomaterials and organic-inorganic hybrids
4 - biorefineries, biobased materials and recycling
acknowledgements
This work was partly funded by the Portuguese Science Foundation (FCT), POCTI and FEDER (project POCTI/QUI/56112/2004 and PTDC/QUI/71198/2006). The authors thank C. P. Neto for helpful discussions and F. Domingues for access to HPLC equipment. S.L. and M.M.A. are grateful to the FCT for grants.