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
Principal Researcheracknowledgements
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.