关于无忧树生物质热解的动力学三因子和热力学分析的见解。
Insights on kinetic triplets and thermodynamic analysis of Delonix regia biomass pyrolysis.
机构信息
Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam 781039, India.
Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam 781039, India.
出版信息
Bioresour Technol. 2022 Aug;358:127375. doi: 10.1016/j.biortech.2022.127375. Epub 2022 May 24.
The aim of this work was to study the pyrolysis of Delonix regia biomass with non-isothermal thermogravimetric experiments. The targeted objective was to investigate kinetic triplets and thermodynamic parameters. Five iso-conversional methods, namely Differential Friedman, Kissinger-Akahira-Sunose, Ozawa-Flynn-Wall, Starink, and Distributed Activation Energy, have been considered. In the adopted heating rates of 5-55 °C min, the average activation energy and pre-exponential factor varied in the range 202.34-205.89 kJ mol and 4.98 × 10 - 2.04 × 10 s respectively. Corresponding average enthalpy and Gibbs free energy varied from 196.84 to 200.87 kJ mol and from 182.64 to 206.41 kJ mol respectively. Pyrolysis mechanism have been confirmed by Avrami-Erofeyev (A4), power-law (P2 and P4) and reaction (F1, F2, and ≥ F5) according to Criado's master plots.
这项工作的目的是研究无忧花生物质的热解，采用非等温热重实验进行研究。目标是研究动力学三参数和热力学参数。采用了五种等转化率方法，即微分弗里德曼法、基辛格-阿哈利亚-松野法、奥扎瓦-弗林-沃尔法、斯塔林克法和分布活化能法。在所采用的 5-55°C/min 的加热速率下，平均活化能和指前因子的范围分别为 202.34-205.89 kJ/mol 和 4.98×10 -2.04×10 s。相应的平均焓和吉布斯自由能分别在 196.84-200.87 kJ/mol 和 182.64-206.41 kJ/mol 之间变化。根据 Criado 的主图，通过阿夫拉米-埃罗菲耶夫（A4）、幂律（P2 和 P4）和反应（F1、F2 和≥F5）确认了热解机制。
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