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  Solvent-Free Catalytic Depolymerization of Cellulose to Water-Soluble Oligosaccharides

Meine, N., Rinaldi, R., & Schüth, F. (2012). Solvent-Free Catalytic Depolymerization of Cellulose to Water-Soluble Oligosaccharides. ChemSusChem, 5(8), 1449-1454. doi:10.1002/cssc.201100770.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-768A-3 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-5A26-0
Genre: Journal Article

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 Creators:
Meine, Niklas1, Author              
Rinaldi, Roberto2, Author              
Schüth, Ferdi1, Author              
Affiliations:
1Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, DE, ou_1445589              
2Research Group Rinaldi, Max-Planck-Institut für Kohlenforschung, Max Planck Society, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, DE, ou_1445617              

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Free keywords: biomass; green chemistry; hydrolysis; mass spectrometry; oligosaccharides
 Abstract: The use of cellulose is hampered by difficulties with breaking up the biopolymer into soluble products. Herein, we show that the impregnation of cellulosic substrates with catalytic amounts of a strong acid (e.g., H2SO4, HCl) is a highly effective strategy for minimizing the contact problem commonly experienced in mechanically assisted, solid-state reactions. Milling the acid-impregnated cellulose fully converts the substrate into water-soluble oligosaccharides within 2 h. In aqueous solution, soluble products are easily hydrolyzed at 130 degrees C in 1 h, leading to 91% conversion of the glucan fraction of a-cellulose into glucose, and 96% of the xylans into xylose. Minor products are glucose dimers (8%), 5-hydroxymethylfurfural (1%) and furfural (4%). Milling practical feedstocks (e.g., wood, sugarcane bagasse, and switchgrass) also results to water-soluble products (oligosaccharides and lignin fragments). The integrated approach (solid-state depolymerization in combination with liquid-phase hydrolysis) could well hold the key to a highly efficient entry process in biorefinery schemes

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Language(s): eng - English
 Dates: 2012-04-052012-08-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/cssc.201100770
ISSN: 1864-5631
 Degree: -

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Title: ChemSusChem
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 5 (8) Sequence Number: - Start / End Page: 1449 - 1454 Identifier: ISSN: 1864-5631
CoNE: https://pure.mpg.de/cone/journals/resource/1864-5631