Details

Autor(en) / Beteiligte

• Ochoa, Aitor
• Aramburu, Borja
• Ibáñez, María
• Valle, Beatriz
• Bilbao, Javier
• Gayubo, Ana G.
• Castaño, Pedro

Titel

Compositional Insights and Valorization Pathways for Carbonaceous Material Deposited During Bio-Oil Thermal Treatment

Ist Teil von

• ChemSusChem, 2014-09, Vol.7 (9), p.2597-2608

Ort / Verlag

Weinheim: WILEY-VCH Verlag

Erscheinungsjahr

2014

Quelle

Wiley Online Library - AutoHoldings Journals

Beschreibungen/Notizen

• This work analyses the composition, morphology, and thermal behavior of the carbonaceous materials deposited during the thermal treatment of bio‐oil (thermal pyrolytic lignin—TPL). The bio‐oil was obtained by flash pyrolysis of lignocellulosic biomass (pine sawdust), and the TPLs were obtained in the 400–700 °C range. The TPLs were characterized by performing elemental analysis; 13C NMR, Raman, FTIR, and X‐ray photoelectron spectroscopy; SEM; and temperature‐programmed oxidation analyzed by differential thermogravimetry and differential scanning calorimetry. The results are compared to a commercial lignin (CL). The TPLs have lower oxygen and hydrogen contents and a greater aromaticity and structural order than the CL material. Based on these features, different valorization routes are proposed: the TPL obtained at 500 °C is suitable for use as a fuel, and the TPL obtained at 700 °C has a suitable morphology and composition for use as an adsorbent or catalyst support. Differences flashed out: Carbonaceous material deposited during the thermal treatment of bio‐oil (obtained in the flash pyrolysis of biomass) is an attractive solid for the biorefinery concept. Results identify the differences between the pyrolytic lignins deposited under diverse temperatures. Based on these differences, tailored valorization pathways for each lignin are proposed. In addition, specific protocols for analyzing the properties of pyrolytic lignins and solids alike are set.