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
|