Chemical Characterization and Comparison of Thermally Treated Beech and Ash Wood

Elisabeth Windeisen; Gerd Wegener

doi:10.4028/www.scientific.net/MSF.599.143

Paper Titles

Background to the Topics Concerned in the Present Papers
p.1

Significance, Analysis and Potential of Utilization of Extractives from Wood: Different Aspects and Examples
p.79

Synchrotron Radiation X-Ray Scattering Techniques for Studying the Micro- and Nanostructure of Wood and their Relation to the Mechanical Properties
p.107

Changes in Nanostructure of Wood Cell Wall during Deformation
p.126

Monotonic Strength Properties of Siberian Yellow Pine
p.137

Chemical Characterization and Comparison of Thermally Treated Beech and Ash Wood
p.143

Softwood Degradation after Being Several Thousand Years in Shore Front Mud
p.159

Closing Words
p.172

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Chemical Characterization and Comparison of Thermally Treated Beech and Ash Wood

Abstract:

Thermal treatments of two wood species were examined. The temperature load at 200 °C on the wood causes characteristic changes in the chemical composition. The determination of specific alterations was carried out by means of suitable methods, both wet chemical and instrumental analyses. The heat treated wood specimens of beech (Fagus sylvatica) and ash (Fraxinus excelsior) were characterized by means of Carbon analysis. The samples were extracted with organic solvents, cold and hot water. The pH-values were determined in the cold water extracts. Sugar analyses were performed after hydrolysis by means of ion-exchange chromatography. Lignin analyses after thioacidolysis were carried out by means of GC and GC/MS.