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Thermal degradation products of wood

Thermische Abbauprodukte des Holzes. Gaschromatographische Trennung und massenspektrometrische Charakterisierung monomerer Polysaccharid-Abbauprodukte

Gas chromatographic separation and mass spectrometric characterization of polysaccharide derived products

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Abstract

Thermal degradation products of woods arising at 450°C have been separated by gas chromatography on a DB-1701 capillary column. GC retention times and mass spectral data of 104 polysaccharide derived pyrolysis products are tabulated. The elemental composition of 76 identified compounds are also presented. The mass spectra were obtained by electron impact ionization (EI). However, the molecular mass of all degradation products with Mw>76 was determined by chemical ionization (CI) using iso-butane as reagent gas. The peak assignment was proved in 38 cases by mass spectrometry of authentic compounds and 32 degradation products were identified according to the literature. The spectral data are presented as a Mass Peak Index showing the intensity of the nine most abundant peaks.

Zusammenfassung

Thermische Abbauprodukte des Holzes, die bei 450°C Pyrolysetem-peratur entstehen, wurden gaschromatographisch über eine DB-1701-Kapillarsäule getrennt. Die GC-Retentionszeiten und massenspektro-metrischen Daten von 104 Abbauprodukten der Polysaccharide werden tabellarisch präsentiert. Die Summenformeln von 76 identifizierten Substanzen werden ebenfalls angegeben. Die Massenspektren wurden durch Elektronenstoß-Ionisation erhalten. Die Molmasse der Abbauprodukte mit Mw>76 wurde jedoch durch chemische Ionisation mit Isobutan als Reaktantgas bestimmt. Die Zuordnung wurde in 38 Fällen durch Massenspektrometrie von authentischen Substanzen bestätigt, und 32 Abbauprodukte wurden nach Literaturangaben identifiziert. Die spek troskopischen Daten sind als Massen-Peak-Index mit Intensitätsangaben über die neun wichtigsten Peaks dargestellt.

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Faix, O., Fortmann, I., Bremer, J. et al. Thermal degradation products of wood. Holz als Roh-und Werkstoff 49, 213–219 (1991). https://doi.org/10.1007/BF02613278

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