TG-MS analysis for thermal decomposition of cellulose under different atmospheres

Shen, Dekui; Ye, Jiangming; Xiao, Rui; Zhang, Huiyan

doi:10.1016/j.carbpol.2013.06.031

Cited by 69 publications

(19 citation statements)

References 29 publications

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“…Other detected peaks can be attributed to volatile simple hydrocarbons, ethers and other products of cellulose pyrolysis. These findings are in agreement with studies focused on gases evolved during cellulose pyrolysis [22]. The presence of some Ca(SCN) 2 (used as solvent during preparation) in the samples was expected.…”

Section: Pyrolysis Of Cellulose Cryogelsupporting

confidence: 92%

Reproducibility of preparation of cellulose-based cryogels characterised by TG–MS

Štefelová

Slovák

2014

J Therm Anal Calorim

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A TG-MS analysis was applied to reveal the reproducibility of preparation of cellulose-based cryogels. The cellulose materials were obtained by dissolution of cellulose in melted Ca(SCN) 2 , followed by gelation and regeneration in an ethanol bath and dried by lyophilisation. The whole preparation process was repeated 14 times. The pyrolysis of the prepared samples was investigated by TG-MS. A number of parameters were determined from the obtained TG, DSC and MS curves and statistically analysed. TG and MS data together with estimated reactions which occurred during sample decomposition enable the calculation of the composition of cryogels and pyrolysed material. An unexpected amount of calcium thiocyanate was found in cellulose cryogels (about 31 %) and after pyrolysis, a high content of calcium oxide (about 58 %) as a product of calcium thiocyanate decomposition was calculated for the final material. The total yield of carbon from cellulose decomposition was about 12 %. From the obtained data, it could be concluded that the preparation of cellulose cryogels is well reproducible if the amounts of the initial substances are kept constant.

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Section: Pyrolysis Of Cellulose Cryogelsupporting

confidence: 92%

Reproducibility of preparation of cellulose-based cryogels characterised by TG–MS

Štefelová

Slovák

2014

J Therm Anal Calorim

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“…The second mass loss for the degradation of NC fibrils under oxidative atmosphere is commonly designated to the oxidation of charcoal formed by the primary pyrolysis reaction. 42 The weight under N 2 and air atmosphere still remains at about 1 wt% and 3 wt%, respectively, at a temperature of about 700 1C. This evidence further indicated that ZnO nanostructures were successfully embedded into the NC fibrils to form a heterogeneous network structure.…”

Section: View Article Onlinementioning

confidence: 70%

Transparent nanocellulose hybrid films functionalized with ZnO nanostructures for UV-blocking

et al. 2015

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Transparent, nanocellulose-ZnO (NC-ZnO) hybrid films were fabricated via a pressure controlled extrusion process using NC fibrils and sheet-like ZnO (s-ZnO) or belt-like ZnO (b-ZnO) nanostructures. The s-ZnO and b-ZnO conjoined with the NC fibrils to form a heterogeneous, fibrous network structure. The NC-ZnO hybrid films with different amounts of ZnO nanostructures showed a synergic feature of high optical transparency and excellent UV-blocking. The results indicated that NC assembled with s-ZnO hybrid film possessed excellent UV-blocking ability in a wide range from 200 to 375 nm, in contrast to NC-b-ZnO.Moreover, the prominent thermal and photo stability of transparent NC-ZnO hybrid films enhanced extensibility and ease of use for diverse biological applications, which require tolerance of temperature changes.

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“…Considering the depletion of fossil fuel sources and the high sensitivity of the public toward environment protection from the conventional energetic systems, the exploration of alternative and renewable energy sources has attracted increasing attention (Shen et al 2013). As an alternative to fossil fuels, biomass, such as agricultural and wood wastes, has become one of the most significant elements of the sustainable energy system due to its abundance, renewability, and environmental benefits (Czernik and Bridgwater 2004).…”

Section: Introductionmentioning

confidence: 99%

Assessing the Effects of Different Process Parameters on the Pyrolysis Behaviors and Thermal Dynamics of Corncob Fractions

Yao¹,

Xu²,

Liang³

2017

BioResources

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The influence of heating rate, gas flow, and biomass particle size on the pyrolysis and thermal dynamics of corncobs (CC) was investigated experimentally using the quantitative method of thermogravimetric analysis (TGA) coupled with mass spectrometry (MS), and the obtained results were compared in depth. For the examined heating rates of 5, 10, and 20 °C/min, the CC pyrolysis at higher heating rates resulted in a more complete decomposition. The initial pyrolysis temperature decreased when gas flow was increased from 30 to 90 mL/min, whereas the weight loss increased. Particle sizes (d ≤ 74 μm, 74 μm < d ≤ 154 μm, 154 μm < d ≤ 280 μm, and 280 μm < d ≤ 450 μm) had pronounced effects on the thermal decomposition and bio-syngas compounds (CO, CO2, CH4, and H2) distribution. The emission intensities of most the gaseous products increased at the elevated heating rate, while they decreased with increasing gas flow. In sum, the pyrolysis of CC particles of 154 μm < d ≤ 280 μm under 20 °C/min and in a gas flow of 30 to 60 mL/min was the most appropriate for bio-syngas production in industrial applications.

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TG-MS analysis for thermal decomposition of cellulose under different atmospheres

Cited by 69 publications

References 29 publications

Reproducibility of preparation of cellulose-based cryogels characterised by TG–MS

Reproducibility of preparation of cellulose-based cryogels characterised by TG–MS

Transparent nanocellulose hybrid films functionalized with ZnO nanostructures for UV-blocking

Assessing the Effects of Different Process Parameters on the Pyrolysis Behaviors and Thermal Dynamics of Corncob Fractions

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