Global interinsic kinetics of wood oxidation

Branca, Carmen; Blasi, Colomba Di

doi:10.1016/s0016-2361(03)00220-5

Cited by 87 publications

(56 citation statements)

References 23 publications

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“…The second stage includes the decomposition of lignin and the combustion of the charcoal produced at the preceding stage (Fang et al, 2006). The same phenomena were observed and recorded by other authors as well (Branca and Di Blasi, 2004;Safi et al, 2004;Shen et al, 2009). 20 In order to compare biomass thermal behavior, DTG is frequently used to determine several temperature indexes: ignition temperature (Ti), final temperature of the first process (Tf1), final temperature of the second process (Tf2).…”

Section: Laboratory Experimentssupporting

confidence: 80%

New experimental diagnostics in combustion of forest fuels: Microscale appreciation for a Macroscale approach

Cancellieri¹,

Leroy-Cancellieri²,

Silvani³

et al. 2018

Preprint

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Section: Laboratory Experimentssupporting

confidence: 80%

New experimental diagnostics in combustion of forest fuels: Microscale appreciation for a Macroscale approach

Cancellieri¹,

Leroy-Cancellieri²,

Silvani³

et al. 2018

Preprint

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“…As the first mass loss process in cellulosic materials is the transformation of carbon compounds to graphitic carbon, any residual carbon in the samples would most likely be dark in color. 52 The TGA of the extr 2inf sample shows a final mass loss that is finished only at 600°C, which suggests that the maximum calcination temperature of 500°C used in this work might be too low. However, the calcinations were carried out using a furnace cycle that included holding at 500°C for 2 h. By contrast, the TGA/DTA measurements were performed under constant heating.…”

Section: A Dimensional and Mass Changesmentioning

confidence: 87%

Silica replication of the hierarchical structure of wood with nanometer precision

et al. 2011

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The structural features of wood were replicated in silica on all levels of hierarchy from the macroscopic to the nanoscopic level of the cellulose elementary fibrils. This was achieved by a series of processing steps on spruce wood templates. Sodium chlorite was used to partially remove the lignin matrix from the wood cell walls, exposing the cellulose fibrils. These were optionally functionalized with maleic acid anhydride to stabilize the fibrillar structure and reduce the shrinkage of the template. Repeated infiltration with tetraethyl orthosilicate in ethanol deposited silica on the fibrils. Calcination at 500°C removed the rest of the organic template by oxidation and resulted in the fusion of the deposited material into a positive silica replica. Small-angle x-ray scattering evidenced fibrillar structures parallel to the original cellulose fibrils at length scales in the order of 10 nm, suggesting the successful nanoscopic replication of the cellulose fibrils and their orientation.

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“…The effects of the above factors on the behavior of biomass decomposition under an inert atmosphere have been investigated previously, but there is insufficient information on oxidative environments. In the most recent research, biomass decomposition was studied in oxidative environments, as in works [14][15][16][17]. From the published data, it may be observed that devolatilization and char combustion lead to lower volatile yields, as well as lower reactivity of torrefied biomass char in comparison with non-treated biomass chars at high heating rates.…”

Section: Introductionmentioning

confidence: 99%

Furniture wood waste as a potential renewable energy source

Plis

Kotyczka-Morańska

Kopczyński

et al. 2016

J Therm Anal Calorim

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In this study, the combustion behavior of raw waste wood from furniture and samples torrefied at temperatures of 473, 513, 553 and 593 K was investigated. TG-DTG analysis showed that the mass loss in the first stage of the process decreased with the temperature of torrefaction, whereas the temperature in the second stage increased. The influence of torrefaction and combustion parameters on greenhouse gas emissions were investigated by the FTIR technique. The characteristic combustion parameters were also determined. The ignition temperatures for the furniture wood waste and samples torrefied at 473, 513 and 553 K from 549 to 559 K, whereas that of the sample torrefied at 593 K was significantly higher (600 K). All samples were completely burnt at 813-843 K, after 29-35 min, depending on the torrefaction temperature. Kinetic parameters are determined using a two-step firstorder reaction. The activation energy value for the first stage increased with the increasing temperature of torrefaction, from 68 to 125 kJ mol -1 , whereas the temperature in the second stage decreased from 108 to 47 kJ mol -1 . A similar correlation was observed for the pre-exponential value A. In the case of the torrefied furniture wood waste at 593 K, the combustion process runs as a single first-order reaction. The calculated data were fitted to the experimental data very accurately (R 2 [ 0.9992 and standard deviation \6.7 %), and the kinetic model was correctly founded. The linear relationship between logA and E a provides a way to predict the kinetic parameters of the combustion process. Keywords

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Global interinsic kinetics of wood oxidation

Cited by 87 publications

References 23 publications

New experimental diagnostics in combustion of forest fuels: Microscale appreciation for a Macroscale approach

New experimental diagnostics in combustion of forest fuels: Microscale appreciation for a Macroscale approach

Silica replication of the hierarchical structure of wood with nanometer precision

Furniture wood waste as a potential renewable energy source

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