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http://hdl.handle.net/10773/20569
Title: | Aqueous phase reactions of pentoses in the presence of nanocrystalline zeolite beta: Identification of by-products and kinetic modelling |
Author: | Ferreira, Luis R. Lima, Sergio Neves, Patricia Antunes, Margarida M. Rocha, Silvia M. Pillinger, Martyn Portugal, Ines Valente, Anabela A. |
Keywords: | SOLID ACID CATALYSTS D-XYLOSE VOLATILE COMPONENTS SUPERCRITICAL WATER ACTIVE COMPOUNDS HIGH-TEMPERATURE SALMO-SALAR DEHYDRATION DEGRADATION H-1-NMR |
Issue Date: | 2013 |
Publisher: | ELSEVIER SCIENCE SA |
Abstract: | Furfural, a valuable platform chemical that has the potential to replace a variety of oil/coal/gas derived materials and chemical products, is produced by the dehydration of o-xylose, which in turn is obtained from lignocellulosic biomass. Herein, the conversion of xylose in the presence of nanocrystalline zeolite beta in the H+-form, using water as solvent, was investigated. Detailed batch kinetic studies and products identifications techniques (H-1, C-13 NMR and comprehensive two-dimensional gas chromatography (GC x GC) combined with time-of-flight mass spectrometry (ToFMS)) provided mechanistic insights into the overall reaction process. The conversion of xylose to furfural is accompanied by several side reactions, forming complex reaction mixtures. A pseudo-homogeneous kinetic model was proposed that fitted quite well the experimental data. (C) 2012 Elsevier B.V. All rights reserved. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/20569 |
DOI: | 10.1016/j.cej.2012.11.022 |
ISSN: | 1385-8947 |
Publisher Version: | 10.1016/j.cej.2012.11.022 |
Appears in Collections: | CICECO - Artigos |
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Aqueous phase reactions of pentoses in the presence of nanocrystalline zeolite beta Identification of by-products and kinetic modelling_10.1016j.cej.2012.11.022.pdf | 821.21 kB | Adobe PDF |
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