Thermodesorption coupled to GC–MS to characterize volatiles formation kinetic during wood thermodegradation

Candelier Kévin, Dumarçay Stéphane, Pétrissans Anélie, Pétrissans Mathieu, Kamdem Pascal, Gerardin Philippe. 2013. Thermodesorption coupled to GC–MS to characterize volatiles formation kinetic during wood thermodegradation. Journal of Analytical and Applied Pyrolysis, 101 : 96-102.

Quartile : Q1, Sujet : CHEMISTRY, ANALYTICAL / Quartile : Q1, Sujet : SPECTROSCOPY

Résumé : Identification of volatile degradation products generated and released during wood mild pyrolysis is important to better understand thermodegradation mechanisms. Previous studies have shown that thermodesorption coupled to GC–MS is an attractive tool to characterize and quantify products formed during wood thermal treatment indicating higher susceptibility of hardwoods to thermodegradation compare to softwoods. The aim of this study is to elucidate wood thermodegradation pathways with special emphasis on the kinetics reactions. To achieve this objective, one hardwood species (beech) and one softwood species (Silver fir) were subjected to thermal treatment directly in the thermal desorption glass tube of thermodesorber connected to GC–MS using helium as carrier and at temperatures of 210 and 230 °C for different times ranging from 10 to 80 min. The volatiles compounds formed were analyzed by gas chromatography coupled to mass spectroscopy. From GC–MS data collected in this study, the kinetic curves of the formation of some of the products as a function of thermal treatment duration were established. Assuming that acetic acid and furfural were formed from hemicelluloses and vanillin from lignin, Arrhenius equation was used to estimate the mean activation energy formation of these two degradation by-products allowing obtaining indirect information on the thermal stability of both polymer.

Mots-clés Agrovoc : Fagus sylvatica, Abies alba, bois, pyrolyse, dégradation thermique, composition chimique, température, chromatographie en phase gazeuse, extrait, poussière, acide acétique

Classification Agris : K50 - Technologie des produits forestiers
P06 - Sources d'énergie renouvelable

Champ stratégique Cirad : Axe 2 (2005-2013) - Biomasse énergie et sociétés du sud

Auteurs et affiliations

• Candelier Kévin, Université de Nancy I (FRA) ORCID: 0000-0002-9328-8511
• Dumarçay Stéphane, Université de Nancy I (FRA)
• Pétrissans Anélie, Université de Nancy I (FRA)
• Pétrissans Mathieu, Université de Nancy I (FRA)
• Kamdem Pascal, MSU (USA)
• Gerardin Philippe, Université de Nancy I (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/579903/)

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