Comparative studies on the pyrolysis of cellulose, hemicellulose, and lignin based on combined kinetics

Yeo, Jun Yi; Chin, Bridgid Lai Fui; Tan, Jun Kit; Loh, Ying Sheng

doi:10.1016/j.joei.2017.12.003

Cited by 202 publications

(102 citation statements)

References 41 publications

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“…When different samples are compared, kinetic parameters are similar if a similar and single reaction takes place in both samples. In this case, the activation energy was obtained by taking the logarithm of Equation (12) and rearranging the resultant mathematical expression. Thus, E values are associated with Equation (13).…”

Section: Isoconversional Methodsmentioning

confidence: 99%

“…The thermal degradation of biomass is a complex process that can be explained by analyzing the pyrolysis kinetic parameters obtained using distributed activation energy models (DAEM) [12,14,25,26]. Recently, other models based on the Fraser-Suzuki function have allowed new and improved ways to fit kinetic curves.…”

Section: Thermogravimetric Data Processing: Deconvolutionmentioning

confidence: 99%

“…Although Equation (6) looks artificial, it has a strong correlation with the famous Kissinger equation [12], where if two different T max values (with their respective β values) are compared, Equation (7) can be obtained.…”

Section: Thermogravimetric Data Processing: Deconvolutionmentioning

confidence: 99%

“…The mass loss (TG) and mass loss rate (DTG) curves for the analyzed biomasses are shown in Figure 1. The Avrami Erofeev model of the nth reaction order [12,27] was used for both NL-B and L-B samples by computing a wide range of n values. These values allowed for the determination of a family of lnA results and CE parameters in each case.…”

Section: Tg and Dtg Analysismentioning

confidence: 99%

“…Thermogravimetric analysis (TGA) has become a widely recognized technique by which biomass pyrolysis can be studied. This approach entails measuring the biomass weight over time at different heating ramps [7,12,13]. Once the data are obtained, biomass pyrolysis is studied by calculating common kinetic parameters.…”

Section: Introductionmentioning

confidence: 99%

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Parametrization of a Modified Friedman Kinetic Method to Assess Vine Wood Pyrolysis Using Thermogravimetric Analysis

et al. 2019

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Common kinetic parameters were obtained for leached and non-leached samples of vine wood biomass. Both samples were considered to have different proportions of cellulose, hemicellulose, and lignin compositions as a result of the leaching process. The two samples were analyzed in terms of pyrolysis kinetic parameters using non-isothermal thermogravimetric analysis. Furthermore, the classic Friedman isoconversional method, a deconvolution procedure using the Fraser–Suzuki function, and a modified Friedman method from a previous study on the delay in conversion degree were satisfactorily applied. The observed difference when the deconvolution technique was applied suggests that the classic Friedman method is not adequate for studying the pyrolysis of individual vine wood biomass components. However, this issue was solved by studying the delay in conversion degree of both biomasses and calculating the kinetic parameters using the resulting information. This procedure was found to be useful for studying and comparing the kinetics of heterogeneous biomasses and has a sound scientific explanation, making this research a basis for future similar studies.

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Section: Isoconversional Methodsmentioning

confidence: 99%

Section: Thermogravimetric Data Processing: Deconvolutionmentioning

confidence: 99%

Section: Thermogravimetric Data Processing: Deconvolutionmentioning

confidence: 99%

Section: Tg and Dtg Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Parametrization of a Modified Friedman Kinetic Method to Assess Vine Wood Pyrolysis Using Thermogravimetric Analysis

et al. 2019

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Bio‐based Aromatics from Carbohydrates

Sharma¹,

Ravindranath

Reddy³

et al. 2023

Industrial Arene Chemistry

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N/O Co‐Doped Hard Carbon Derived from Cocklebur Fruit for Sodium‐Ion Storage

Shi

Han

et al. 2022

ChemElectroChem

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Hard carbon is one of the most promising anode materials for sodium-ion batteries (SIBs). However, it still faces the obstacle of low reversible capacity. Modifying the carbon skeleton with heteroatoms is an effective method to improve the electrochemical properties of carbon electrodes. Herein, cocklebur fruit, a plant which is rich in natural alkaloids, is selected as the precursor to prepare N/O co-doped hard carbon. The obtained sample pyrolyzed at 1100 °C (H1100) can exhibit 366.07 mAh g À 1 specific discharge capacity and 69.08 % initial coulombic efficiency. The balance between the suitable configuration of N/ O groups and graphitization forms a carbon material with a high sodium-ion storage capability. The storage mechanism is analyzed by cyclic voltammetry (CV), differential capacity (dQ/ dV), galvanostatic intermittent titration technique (GITT), and ex-situ Raman. The results show that the sodium ions are first adsorbed on defect sites, then filled with micropores and embedded in graphite sheets.

show abstract

Comparative studies on the pyrolysis of cellulose, hemicellulose, and lignin based on combined kinetics

Cited by 202 publications

References 41 publications

Parametrization of a Modified Friedman Kinetic Method to Assess Vine Wood Pyrolysis Using Thermogravimetric Analysis

Parametrization of a Modified Friedman Kinetic Method to Assess Vine Wood Pyrolysis Using Thermogravimetric Analysis

Bio‐based Aromatics from Carbohydrates

N/O Co‐Doped Hard Carbon Derived from Cocklebur Fruit for Sodium‐Ion Storage

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