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A kinetic study on the thermal decomposition of six hardwood species

Studie zur Kinetik des thermischen Abbaus von sechs Laubholzarten

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Abstract

The thermal decomposition of six species of hardwoods has been investigated using the technique of thermogravimetry (TG) and differential thermal analysis (DTA). In addition, the kinetic of isothermal pyrolysis in dry nitrogen between 220 and 340 °C temperature was studied for the same species. The curves plotted from the thermal decomposition show in general a similar behaviour for all the species under study. Kinetics of the pyrolysis is in correspondence with an equation of the Avrami-Erofeev type of random nucleation and growth. The straigth lines obtained by plotting the values Lnk=f(1/T), exhibit two markedly different parts.

Zusammenfassung

Der thermische Abbau von sechs Laubholzarten wurde mit Hilfe der Thermogravimetrie (TG) und der Differential Thermoanalyse (DTA) untersucht. Für dieselben Holzarten wurde daneben der Ablauf der Pyrolyse unter isothermen Bedingungen in Stickstoffatmo-sphäre, bei Temperaturen zwischen 220 und 340°C ermittelt. die Verläufe des thermischen Abbaus zeigen allgemein dasselbe Bild für alle untersuchten Holzarten. Der Verlauf der Pyrolyse läßt den Zusammenhang mit der Avrami-Erofecv-Gleichung erkennen. Die Geraden, welche man für die Gleichung Ink=f(1/T) erhält, zeigen zwei deutlich voneinander unterschiedliche Teile.

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Authors and Affiliations

  1. Department of Chemistry, University of Santiago del Estero, Argentine

    A. Herrera, S. Soria & C. P. de Araya

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  1. A. Herrera
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  2. S. Soria
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  3. C. P. de Araya
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Herrera, A., Soria, S. & de Araya, C.P. A kinetic study on the thermal decomposition of six hardwood species. Holz als Roh-und Werkstoff 44, 357–360 (1986). https://doi.org/10.1007/BF02612744

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  • DOI: https://doi.org/10.1007/BF02612744

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