Characteristic analysis and kinetics description for biochar-based catalysts coking during the biomass catalytic pyrolysis

Wang, Biao; Hu, Junhao; Chen, Wei; Chang, Chun; Pang, Shusheng; Li, Pan

doi:10.1016/j.fuel.2023.130769

Cited by 2 publications

(1 citation statement)

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“…21 An experimental investigation was conducted on poplar wood chips with biochar-based catalysts, and it was observed that high temperatures promoted carbon conversion from amorphous coke to graphitized coke. 22 Thermogravimetric analysis (TGA) is a common method for exploring the biomass pyrolysis mechanism. This provides weight loss data, which can be further used to analyze the thermal degradation behavior, kinetics and thermodynamic parameters.…”

Section: Introductionmentioning

confidence: 99%

Catalytic pyrolysis of lignocellulosic and algal biomass using NaOH as a catalyst

Ram,

Ku,

Vasudev

2024

Biofuels Bioprod Bioref

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In this work, the pyrolysis of barley straw (BS) and brown algae (BA) mixed with NaOH as a catalyst was compared. Four different catalyst‐to‐biomass mass ratios (i.e., 6:100, 8:100, 10:100, and 12:100) and five pyrolysis heating rates were examined. The kinetic parameters (e.g., the activation energy and pre‐exponential factor) were evaluated using the Friedman method and kinetic models. For noncatalytic pyrolysis, the average activation energies for BS and BA samples were 139.71 and 183.19 kJ mol−1, respectively. However, the addition of catalyst generally increased the average activation energy of BS samples but decreased that of BA samples. The enthalpy change and Gibbs free energy change revealed that both catalytic and noncatalytic pyrolysis processes were nonspontaneous and endothermic, and the inclusion of catalyst increased the average entropy change of the BS samples but decreased that of the BA samples. Char and biochar yields after pyrolysis were also analyzed quantitatively. These observations provide insight into the differences in catalytic pyrolysis between lignocellulosic and algal biomass species.

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Section: Introductionmentioning

confidence: 99%