木质纤维素及其主要成分热解的比较研究：生物炭和挥发分的特征及总体分布。
Comparative study of the pyrolysis of lignocellulose and its major components: characterization and overall distribution of their biochars and volatiles.
机构信息
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
出版信息
Bioresour Technol. 2014 Mar;155:21-7. doi: 10.1016/j.biortech.2013.12.006. Epub 2013 Dec 11.
In order to investigate the pyrolysis differences among lignocellulose and its major components, the biochars and volatiles of lignocellulose (bamboo), lignin, hemicellulose and holocellulose (from bamboo), and cellulose (from cotton linter) were studied using elemental analysis, FTIR, XRD, SEM, Py-GC/MS and TGA-FTIR. Result showed that the biochar yield of lignin (48.8%) was much higher than those of hemicellulose (21.1%), cellulose (8.3%), holocellulose (20.4%) and bamboo (15.1%), while no obvious elemental difference among these biochars was found. Results from Py-GC/MS indicated that carbonyl compounds, ethers and alcohols were the major volatiles of polysaccharide component pyrolysis, while aromatic compounds were the major volatiles of lignin pyrolysis. The pyrolysis of polysaccharide component mainly occurred at 200-400°C, while the pyrolysis of lignin happened at 300-700°C.
为了研究木质纤维素及其主要成分的热解差异，采用元素分析、FTIR、XRD、SEM、Py-GC/MS 和 TGA-FTIR 对木质纤维素（竹子）、木质素、半纤维素和全纤维素（来自竹子）以及纤维素（来自棉花绒）的生物炭和挥发物进行了研究。结果表明，木质素（48.8%）的生物炭产率明显高于半纤维素（21.1%）、纤维素（8.3%）、全纤维素（20.4%）和竹子（15.1%），但这些生物炭之间没有明显的元素差异。Py-GC/MS 结果表明，多糖组分热解的主要挥发物为羰基化合物、醚类和醇类，而木质素热解的主要挥发物为芳烃化合物。多糖组分的热解主要发生在 200-400°C，而木质素的热解发生在 300-700°C。
Zotero 插件