Dehydration of Xylose into Furfural in the Presence of Crystalline Microporous Silicoaluminophosphates
作者： Sérgio Lima , Auguste Fernandes , Margarida M. Antunes , Martyn Pillinger , Filipa Ribeiro
DOI: 10.1007/S10562-010-0259-6
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摘要: 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 C. For all materials, no decrease catalytic activity is observed after three consecutive recycling runs. Furfural yields 4 h using (34-38%) are comparable with that for HMOR zeolite Si/Al * 6 (34%), similar reaction while H2SO4 (0.03 M) gives 2% FUR. Complete conversion reached within 16-24 h, up to 65%. Bronsted Lewis acidity was determined through FTIR analysis adsorbed pyridine, tenta- tively correlated performances.
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