de.mpg.escidoc.pubman.appbase.FacesBean
Deutsch
 
Hilfe Wegweiser Impressum Kontakt Einloggen
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

δ 13C values of pyrolysis products from cellulose and lignin represent the isotope content of their precursors

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons62569

Steinbeiss,  S.
Molecular Biogeochemistry Group, Dr. G. Gleixner, Department Biogeochemical Processes, Prof. E.-D. Schulze, Max Planck Institute for Biogeochemistry, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons62384

Gleixner,  G.
Molecular Biogeochemistry Group, Dr. G. Gleixner, Department Biogeochemical Processes, Prof. E.-D. Schulze, Max Planck Institute for Biogeochemistry, Max Planck Society;

Externe Ressourcen
Es sind keine Externen Ressourcen verfügbar
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Steinbeiss, S., Schmidt, C. M., Heide, K., & Gleixner, G. (2006). δ 13C values of pyrolysis products from cellulose and lignin represent the isotope content of their precursors. Journal of Analytical and Applied Pyrolysis, 75(1), 19-26.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000E-D49B-F
Zusammenfassung
We investigated the delta(13)C values of pyrolysis products from cellulose and lignin, the main components of wood, to prove that in the pyrolysis process no isotope exchange between different pyrolysis products appears and that hence pyrolysis products represent the isotope content of their precursors. Two cellulose samples and a lignin sample with delta(13)C values of -23, -12 and -28 parts per thousand, respectively, were pyrolysed using Curie point pyrolysis simultaneously coupled to GC/MS and GC/IRMS. All samples were pyrolysed individually and in mixtures of lignin with both isotopically different celluloses in two mixing ratios, e.g. 1: 1 and 4: 1; the latter is representative for wood. No intermolecular isotope exchange between pyrolysis products from cellulose and lignin was observed. This proves that Curie point pyrolysis is suitable for investigating the isotope content of pyrolysis products in complex mixtures like wood. Pyrolysis products from both celluloses and lignin have delta(13)C values similar to the bulk delta(13)C value of the respective sample. In mixtures of cellulose and lignin delta(13)C values of some pyrolysis products change slightly due to peak overlap and higher background signals. However, detected changes were independent from the isotopic difference between the mixing partners. Pyrolysis products such as 2,6-dimethoxyphenol, 4-methyl-2,6-dimethoxyphenol and trans-4-(2-propenyl)-2,6-dimethoxyphenol for lignin and 2-hydroxymethyl-5-hydroxy-2,3-dihydro-(4H)-pyrane-4-one and levoglucosane for cellulose were found to represent the isotopic signature from cellulose and lignin in mixtures regardless of the composition of the mixture. (c) 2005 Elsevier B.V. All rights reserved. [References: 39]