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Publikācija: A Study of Thermo-Hydro-Treated (THT) Birch Wood by Chemical Analysis and Py-GC/MS

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Nosaukums oriģinālvalodā A Study of Thermo-Hydro-Treated (THT) Birch Wood by Chemical Analysis and Py-GC/MS
Pētniecības nozare 2. Inženierzinātnes un tehnoloģijas
Pētniecības apakšnozare 2.5. Materiālzinātne
Pētniecības platforma Materiāli, procesi un tehnoloģijas
Autori Ingeborga Andersone
G. Dobele
Bruno Andersons
Nina Kurnosova
Edgars Kuka
A. Volperts
J. Grinins
Atslēgas vārdi analytical pyrolysis; birch wood; chemical analysis; thermo-hydro treatment
Anotācija The chemical changes in birch wood occurring at thermo-hydro treatment (THT) was studied at temperatures (T) of 150, 160 and 170°C by analytical pyrolysis [Py-gas chromatography/mass spectrometry/flame ionisation detector (GC/MS/FID)], elemental analysis and traditional wet-chemical analysis. THT wood (THTW) was also extracted with acetone. Mass losses (ML) due to THT and acetone extraction of THTW were considered for material balance calculations. The holocellulose and hemicellulose (HC) contents decrease with increasing THT temperature (THTT), thus the apparent lignin content is elevated by ca. 20%. The HC degradation begins at 150°C, while that of α-cellulose modification at 170°C. Compared to unmodified birch, the THT170°C material contains ca. 10% less α-cellulose and up to 40% less HC. The Py-GC/MS also indicates decreasing amounts of volatile products from polymeric carbohydrates (CHs) and lignin origin as a function of increasing THTT. The identified CH-based Py products of THT170°C of non-extracted (ne) and extracted (e) materials resulted in 13 and 22% weight decrements, respectively, while the lignin-type Py products were reduced by 13 and 49%, respectively. With increasing THTT, the total content of CO2, water and methanol decreases, and the amount of unidentified compounds increases by 30%.
DOI: 10.1515/HF-2018-0169
Hipersaite: https://www.degruyter.com/view/journals/hfsg/73/7/article-p653.xml 
Atsauce Andersone, I., Dobele, G., Andersons, B., Kurnosova, N., Kuka, E., Volperts, A., Grinins, J. A Study of Thermo-Hydro-Treated (THT) Birch Wood by Chemical Analysis and Py-GC/MS. Holzforschung, 2019, Vol. 73, No. 7, 653.-661.lpp. ISSN 0018-3830. e-ISSN 1437-434X. Pieejams: doi:10.1515/HF-2018-0169
Papildinformācija Citējamību skaits:
  • Scopus  0
ID 31275