Quantitative studies on furfural and organic acid formation during hydrothermal, acidic and alkaline degradation ofD-xylose View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1992-06

AUTHORS

P. J. Oefner, A. H. Lanziner, G. Bonn, O. Bobleter

ABSTRACT

Chromatographic analysis of the degradation ofD-xylose either in plain water or aqueous sulfuric acid at temperatures ranging from 180 – 220°C gave up to 50 mol% of furfural. Activation energies did not differ significantly between reactions in plain water (Ea=119.4 kJ/mol), 0.001M H2SO4 (Ea=120.6 kJ/mol), 0.01M H2SO4 (Ea=130.8 kJ/mol), and 0.1M H2SO4 (Ea=120.7 kJ/mol). However, under alkaline conditions the activation energy was only 63.7 kJ/mol, indicating a different reaction mechanism. Isotachophoretic analyses revealed the formation of pyruvic, formic, glycolic, lactic, and acetic acid. While the relative yields of these acids ranged from 0.8 to 7% under hydrothermal and acidic conditions, 10 – 23% were obtained in alkaline degradation. More... »

PAGES

547-556

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf00816848

DOI

http://dx.doi.org/10.1007/bf00816848

DIMENSIONS

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