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  Hydrogenolysis of Cellulose over Cu-Based Catalysts—Analysis of the Reaction Network

Tajvidi, K., Hausoul, P. J. C., & Palkovits, R. (2014). Hydrogenolysis of Cellulose over Cu-Based Catalysts—Analysis of the Reaction Network. ChemSusChem, 7(5), 1311-1317. doi:10.1002/cssc.201300978.

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Tajvidi, K.1, Author              
Hausoul, P. J. C.2, Author
Palkovits, R.1, Author              
Affiliations:
1Research Group Palkovits, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445615              
2Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 1, 52074 Aachen (Germany), ou_persistent22              

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Free keywords: biomass; cellulose; copper; hydrogenolysis; mechanism
 Abstract: A series of polyols, carbohydrates, and cellulose were tested in the aqueous, CuO/ZnO/Al2O3-catalyzed hydrogenolysis reaction at 245 °C and 50 bar H2. The compositions of liquid-phase products were analyzed; based on these results a unified reaction mechanism is proposed that accounts for the observed product distribution. Elementary transformations such as dehydration, dehydrogenation/hydrogenation, Lobry de Bruyn–van Ekenstein isomerization and retro-aldol cleavage were identified as most important for controlling the selectivity of simple polyols and carbohydrates. For cellulose the product distribution is considerably different than for glucose or sorbitol, indicating a change in the reaction pathway. Therefore, next to the traditional hydrolysis of the glycosidic bond, an additional depolymerization mechanism involving only the reducing ends of cellulose oligomers is proposed to account for this observation.

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Language(s): eng - English
 Dates: 2014-03-052014-05
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/cssc.201300978
 Degree: -

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Title: ChemSusChem
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 7 (5) Sequence Number: - Start / End Page: 1311 - 1317 Identifier: ISSN: 1864-5631
CoNE: https://pure.mpg.de/cone/journals/resource/1864-5631