| Acidic cesium salts of 12-tungstophosphoric acid as catalysts for the dehydration of xylose into furfural. | |
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MedLine Citation:
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PMID: 17081510 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Cesium salts of 12-tungstophosphoric acid, Cs(x)H(3-x)PW(12)O(40) (Cs(x)PW), in the bulk form or supported on medium-pore MCM-41 (3.7 nm) or large-pore (9.6 nm) micelle-templated silicas are active solid acid catalysts for the cyclodehydration of xylose into furfural, in a toluene/water solvent system (T/W) or in dimethyl sulfoxide (DMSO). The catalytic results are comparable to those obtained using sulfuric acid, under similar reaction conditions. The initial activities increase in the order H(3)PW(12)O(40)<Cs(2.0)PW<Cs(2.5)PW<silica-supported CsPW catalysts (15, 34wt% PW). Higher HPA loadings, larger pore diameter of the parent silica support, and higher reaction temperatures lead to higher furfural yields. The stability and reusability of the MCM-41-supported CsPW is higher in DMSO than in T/W. |
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Authors:
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Ana S Dias; Sérgio Lima; Martyn Pillinger; Anabela A Valente |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2006-10-17 |
Journal Detail:
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Title: Carbohydrate research Volume: 341 ISSN: 0008-6215 ISO Abbreviation: Carbohydr. Res. Publication Date: 2006 Dec |
Date Detail:
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Created Date: 2006-11-27 Completed Date: 2007-02-02 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0043535 Medline TA: Carbohydr Res Country: Netherlands |
Other Details:
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Languages: eng Pagination: 2946-53 Citation Subset: IM |
Affiliation:
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Department of Chemistry, CICECO, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Catalysis Cesium / chemistry Desiccation Dimethyl Sulfoxide Furaldehyde / chemical synthesis* Kinetics Phosphoric Acids / chemistry* Solvents Tungsten Compounds / chemistry* X-Ray Diffraction Xylose / chemistry* |
| Chemical | |
Reg. No./Substance:
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0/Phosphoric Acids; 0/Solvents; 0/Tungsten Compounds; 0/Xylose; 67-68-5/Dimethyl Sulfoxide; 7440-46-2/Cesium; 98-01-1/Furaldehyde |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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