Dehydration of Xylose into Furfural in the Presence of Crystalline Microporous Silicoaluminophosphates
authors Lima, S; Fernandes, A; Antunes, MM; Pillinger, M; Ribeiro, F; Valente, AA
nationality International
journal CATALYSIS LETTERS
author keywords Xylose; Furfural; Dehydration; Silicoaluminophosphate; Microporous; Solid acid
keywords LIQUID-PHASE DEHYDRATION; SOLID ACID CATALYSTS; 12-TUNGSTOPHOSPHORIC ACID; MOLECULAR-SIEVES; ZEOLITE; FRUCTOSE; GLUCOSE; SAPO-5
abstract Microporous silicoaluminophosphates SAPO-5, SAPO-11 and SAPO-40 have been tested as solid acid catalysts in the dehydration of xylose into furfural (FUR) under biphasic aqueous-organic conditions, at 170 degrees C. For all materials, no decrease in catalytic activity is observed after three consecutive recycling runs. Furfural yields at 4 h using SAPO-11 (34-38%) are comparable with that for HMOR zeolite with Si/Al similar to 6 (34%), under similar reaction conditions, while H(2)SO(4) (0.03 M) gives 2% FUR. Complete xylose conversion is reached within 16-24 h, with furfural yields of up to 65%. Bronsted and Lewis acidity of the silicoaluminophosphates was determined through FTIR analysis of adsorbed pyridine, and tentatively correlated with the catalytic performances.
publisher SPRINGER
issn 1011-372X
year published 2010
volume 135
issue 1-2
beginning page 41
ending page 47
digital object identifier (doi) 10.1007/s10562-010-0259-6
web of science category Chemistry, Physical
subject category Chemistry
unique article identifier WOS:000275090400007
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