中文摘要：

以柳桉生物质为原料,利用红外光谱（FTIR）对其结构进行表征,获得主要官能团的分布信息。随后利用热重红外联用技术（TG-FTIR）研究柳桉的热解行为。柳桉主热解阶段存在由纤维素热解造成的主失重峰以及半纤维素和木质素热解引起的两个肩状峰。同时引入双高斯分布活化能模型（DG-DAEM）对柳桉的热解动力学参数进行计算,结果表明其表观活化能主要分布在第一高斯区间。此外通过在线FTIR分析进一步探讨了典型小分子气体产物的生成和演变机理。

英文摘要：

Lauan was used as the feedstock in this study. The structure of lauan was characterized by FTIR, and the main functional groups information were obtained. TG-FTIR technology was applied to analyze the pyrolysis behavior of lauan. The DTG curve showed that the main decomposition stage existed one sharp and two shoulder peaks, which were resulted from the pyrolysis of cellulose, hemi- celluloses and lignin, respectively. Double Gaussian distributed activation energy model （DG-DAEM） was introduced in this study to calculate the thermal kinetic parameters for lauan pyrolysis, and the resulting apparent activation energies were mainly distributed in the first Gaussian region. By using the online FTIR analysis, the evolution characteristics of the typical small molecular volatiles were detected and discussed.