Comparison of the results of thermal analysis and stepwise pyrolysis gas chromatografhy by investigating thermal destruction of some cellulose derivatives

Kogerman, A

doi:10.1016/0040-6031(85)85107-8

Cited by 2 publications

(7 citation statements)

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“…This tailing is associated with secondary pyrolysis of char formed during the primary processes, when most of the volatiles are released (refer to Figures and a). Similar CO and CO 2 results were previously observed by Kogerman et al (1985) . These authors reported also water release at investigated temperature range of 100–350 °C.…”

Section: Methodssupporting

confidence: 90%

“…Similar CO and CO 2 results were previously observed by Kogerman et al (1985). 36 These authors reported also water release at investigated temperature range of 100− 350 °C. Thus, dehydration, decarboxylation, and decarbonylation occur already below 375 °C, in the region of maximum weight loss of cellulose.…”

Section: Methodssupporting

confidence: 89%

“…The observed discrepancy between the model and experiment is due to unquantified water yields in experimental work. Note that the water yield in total loss of cellulose may reach up to 5–10% based on literature data. ,,, An excellent agreement between simulation and temperature-dependent yields of volatiles (sum gas and tars) released at each pyrolysis stage is achieved (Figure a).…”

Section: Kinetic Modeling Of Cellulose Fractional Pyrolysissupporting

confidence: 58%

“…Fractional pyrolysis accurately represents cellulose behavior within the cigarette smoking, mimicking well progressing thermal conditions in different zones. − To our knowledge, few literature data were reported on the fractional pyrolysis of biomass and its constituent ,,,,− and focus mainly on understanding the effect of substrates thermal pretreatment on the yield and properties of the solid products. ,,− …”

Section: Introductionmentioning

confidence: 99%

“…The present study assessed the pyrolysis characteristics of crystalline cellulose under isothermal, fractional pyrolysis conditions, in 25 °C temperature increments within the temperature range of 200–900 °C. In contrast to published studies of fractional pyrolysis with isothermal periods from several minutes to a day, ,,− our experimental data represent a 3 min isothermal periods, with no preheating thermal ramp, which represent well gradual heating of biopolymer material and derived kinetic parameters were used to develop a flexible empirical kinetic model. This model can be applied in engineering applications, as a predictive tool to optimize yields of pyrolysis products, assist in reactor design and to understand the process of cellulose partial decomposition during puffing a cigarette.…”

Section: Introductionmentioning

confidence: 99%

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Kinetic Modeling of Cellulose Fractional Pyrolysis

2018

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The kinetics of cellulose fractional pyrolysis was studied for the first time in the temperature range of 200–900 °C, with 25 °C increment under nitrogen atmosphere. A detailed analysis of the major and minor pyrolysis products was performed using a System for Thermal Diagnostic Studies (STDS) and FTIR techniques. A semiglobal kinetic model was proposed, with products grouped into kinetic lumps, based on their formation profile similarity. Kinetic parameters (pre-exponential factor A and activation energy E a) for formation of major products grouped into heavy volatiles 1 lump (levoglucosan and anhydrosugars) and light volatiles 2 lump (furans and carbonyls) were obtained based on the performed experimental studies. The final model accurately predicts not only the weight loss, the temperature-distribution of major lumped products, and the total yields of tar and gases from the fractional pyrolysis of cellulose but also shows a good performance toward literature data for experimental studies of others.

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Section: Methodssupporting

confidence: 90%

Section: Methodssupporting

confidence: 89%