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Biomass pyrolysis TGA assessment with an international round robin

Anca-Couce, A.; Tsekos, C.; Retschitzegger, S.; Zimbardi, F.; Funke, A.; Banks, S.; Kraia, T.; Marques, P.; Scharler, R.; Jong, W. de; Kienzl, N.

The large variations found in literature for the activation energy values of main biomass compounds (cellulose, hemicellulose and lignin) in pyrolysis TGA raise concerns regarding the reliability of both the experimental and the modelling side of the performed works. In this work, an international round robin has been conducted by 7 partners who performed TGA pyrolysis experiments of pure cellulose and beech wood at several heating rates. Deviations of around 20 – 30 kJ/mol were obtained in the activation energies of cellulose, hemicellulose and conversions up to 0.9 with beech wood when considering all experiments. The following method was employed to derive reliable kinetics: to first ensure that pure cellulose pyrolysis experiments from literature can be accurately reproduced, and then to conduct experiments at different heating rates and evaluate them with isoconversional methods to detect experiments that are outliers and to validate the reliability of the derived kinetics and employed reaction models with a fitting routine. The deviations in the activation energy values for the cases that followed this method, after disregarding other cases, were of 10 kJ/mol or lower, except for lignin and very high conversions. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000119870
Veröffentlicht am 19.06.2020
DOI: 10.1016/j.fuel.2020.118002
Zitationen: 13
Web of Science
Zitationen: 14
Zitationen: 15
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Katalyseforschung und -technologie (IKFT)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 15.09.2020
Sprache Englisch
Identifikator ISSN: 0016-2361, 1873-7153
KITopen-ID: 1000119870
HGF-Programm 35.13.02 (POF III, LK 01) Konversion
Erschienen in Fuel
Verlag Elsevier
Band 276
Seiten Art. Nr.: 118002
Schlagwörter Biomass, Pyrolysis, TGA, Fitting, Isoconversional, Round robin
Nachgewiesen in Web of Science
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