Rice husk (RH) and poplar bark (PB) as the staple biomass wastes represent herbaceous and woody plants, respectively. Thermo-chemical conversion of these wastes is a practical approach for value-added reclamation of bioenergy in large-quantity and pyrolysis plays core role in this process. In this work, RH and PB were subjected to comprehensive investigations on pyrolysis behavior, kinetics and gaseous product evolution in a thermogravimetry-Fourier transform infrared spectroscopy at different heating rates. The results demonstrated that both RH and PB underwent three consecutive pyrolysis stages, the TG/DTG curves shifted to higher temperature and the peak temperature intervals also enhanced as heating rate increased. It was observed CO₂ was the most dominated species among oxygenated products, followed by CO bond containing species, while CH₄ and arenes were abundant in hydrocarbon gases. In comparison, pyrolysis of RH could generate larger amounts of oxygenated products, and more hydrocarbons like CH₄, arenes, and C²⁺ aliphatics were observed in the pyrolytic products of PB. Model-free kinetic methods showed that the average E_a were 209.1 kJ/mol and 203.9 kJ/mol for RH and PB, respectively. Criado model-fitting method indicated that pyrolysis of RH and PB both obeyed F1 reaction mechanism first and turned into one-dimensional diffusion and reaction mechanism, respectively at higher conversion of 0.25−0.60.

稻壳（RH）和杨树皮（PB）作为主要生物质废物分别代表草本和木本植物。这些废物的热化学转化是生物能源大量增值回收的实用方法，热解在该过程中起着核心作用。在这项工作中，RH 和 PB 在不同加热速率下的热重-傅里叶变换红外光谱中进行了热解行为、动力学和气体产物演化的综合研究。结果表明，RH 和 PB 都经历了三个连续的热解阶段，TG/DTG 曲线向更高的温度移动，峰值温度间隔也随着加热速率的增加而增加。观察到 CO ₂是氧化产物中最主要的物种，其次是 C含 O 键的物种，而 CH ₄和芳烃在烃类气体中含量丰富。相比之下，RH的热解可以产生更多的氧化产物，并且在PB的热解产物中观察到更多的烃，如CH ₄、芳烃和C ²⁺脂肪族化合物。无模型动力学方法表明，RH 和 PB的平均E _a分别为 209.1 kJ/mol 和 203.9 kJ/mol。Criado 模型拟合方法表明 RH 和 PB 的热解均首先遵循 F1 反应机理，并分别在 0.25-0.60 的较高转化率下转化为一维扩散和反应机理。