| Acid-Catalyzed Conversion of Xylose in Methanol-Rich Medium as Part of Biorefinery. | |
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MedLine Citation:
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PMID: 22730169 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Acid treatments of xylose have been performed in a methanol/water mixture to investigate the reaction pathways of xylose during bio-oil esterification. Xylose was mainly converted into methyl xylosides with negligible humins formed below 130 °C. However, humins formation became significant with the dehydration of xylose to furfural and 2-(dimethoxymethyl)furan (DOF) at elevated temperatures. The conversion of xylose to methyl xylosides protected the C1 hydroxyl group of xylose, which stabilized xylose and suppressed the formation of sugar oligomers and polymerization reactions. In comparison, the conversion of furfural to DOF protected the carbonyl group of furfural. However, the protection did not remarkably suppress the polymerization of furfural at high temperatures because of the shift of the reaction equilibrium from DOF to furfural with a prolonged residence time. In addition, the acid treatment of furfural produced methyl levulinate in methanol and levulinic acid in water, which was catalyzed by formic acid. |
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Authors:
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Xun Hu; Caroline Lievens; Chun-Zhu Li |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-6-22 |
Journal Detail:
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Title: ChemSusChem Volume: - ISSN: 1864-564X ISO Abbreviation: - Publication Date: 2012 Jun |
Date Detail:
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Created Date: 2012-6-25 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101319536 Medline TA: ChemSusChem Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
Affiliation:
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Fuels and Energy Technology Institute, Curtin University of Technology, GPO Box U1987, Perth, WA 6845 (Australia), Fax: (+61) 8-9266-1138. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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