Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

 
 
DownloadE-Mail
  From biomass to feedstock: one-step fractionation of lignocellulose components by the selective organic acid-catalyzed depolymerization of hemicellulose in a biphasic system

vom Stein, T., Grande, P. M., Kayser, H., Sibilla, F., Leitner, W., & Domínguez de Maria, P. (2011). From biomass to feedstock: one-step fractionation of lignocellulose components by the selective organic acid-catalyzed depolymerization of hemicellulose in a biphasic system. Green Chemistry, 13(7), 1772-1777. doi:10.1039/C1GC00002K.

Item is

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
vom Stein, Thorsten1, Autor
Grande, Philipp M.1, Autor
Kayser, Henning1, Autor
Sibilla, Fabrizio2, Autor
Leitner, Walter1, 3, Autor           
Domínguez de Maria, Pablo1, Autor
Affiliations:
1Institute of Technical and Macromolecular Chemistry (ITMC), RWTH Aachen University, Worringerweg 1, D-52074, Aachen, Germany, ou_persistent22              
2Department of Biotechnology, RWTH Aachen University, Worringerweg 1, D-52074, Aachen, Germany, ou_persistent22              
3Service Department Leitner (Technical Labs), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445626              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: A concept for a highly integrated fractionation of lignocellulose in its main components (cellulose-pulp, soluble hemicellulose sugars and lignin) is described, based on the selective catalytic depolymerization of hemicellulose in a biphasic solvent system. This leads to an effective disentanglement of the compact lignocellulose structure, liberating and separating the main components in a single step. At mild temperatures (80–140 °C), oxalic acid catalyzes selectively the depolymerization of hemicellulose to soluble sugars in aqueous solution, whereas the more crystalline cellulose-pulp remains solid and inaccessible to the acid catalysis. In the presence of a second organic phase consisting of bio-based 2-methyltetrahydrofuran (2-MTHF), lignin is directly separated from the pulp and the soluble carbohydrates by in situ extraction. The oxalic acid catalyst can be crystallized from the aqueous solution, recovered and re-used. The delignified cellulose-pulp obtained from this biphasic system can be directly subjected to enzymatic depolymerization, affording soluble oligomers and glucose at rates almost comparable to those observed for the hydrolysis of commercial microcrystalline Avicel®. Overall, the concept may offer a promising approach for an efficient and selective pre-treatment of lignocellulosic materials under mild and environmentally-friendly conditions.

Details

einblenden:
ausblenden:
Sprache(n): eng - English
 Datum: 2011-01-012011-05-132011-06-162011-07-01
 Publikationsstatus: Erschienen
 Seiten: 6
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1039/C1GC00002K
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Green Chemistry
  Andere : Green Chem.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Cambridge, UK : Royal Society of Chemistry
Seiten: 6 Band / Heft: 13 (7) Artikelnummer: - Start- / Endseite: 1772 - 1777 Identifikator: ISSN: 1463-9262
CoNE: https://pure.mpg.de/cone/journals/resource/954925625301