engleski

Influence of Different Wood Species Chemical Composition on the Liquefaction Properties

This paper presents the properties characterization of liquefied different wood species according to their chemical composition. Four hardwood species namely black poplar (Populus nigra L.), beech (Fagus sylvatica), sessile oak (Quercus petraea Liebl.) and common oak (Quercus robur L.) and two softwood species namely common fir (Abies alba Mill.) and spruce (Picea abies Karst.) were liquefied via catalytic liquefaction in the reactor using glycerol solvent as liquefaction reagent under defined reaction conditions: wood/glycerol=1:5, sulfuric acid as catalyst (3 wt%) at 150 °C for 120 min. The chemical composition analysis of the same wood species was carried out for their influence on liquefaction properties. The percentage residues, liquefaction degree and hydroxyl OH- numbers were determined as liquefaction properties. According to gained results and as the main aim, it determined the most suitable wood species for the liquefaction process in terms of obtaining the best liquefaction properties. Furthermore, this reagent system was showed suitable for liquefaction of a wide variety of wood species.

hydroxyl number ; liquefaction degree ; residual percentage ; wood liquefaction, wood species

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