基于XPS的纤维素热解焦表面结构分析

摘要

以XPS为主要分析手段，以管式炉和金属网为反应器，在300,℃不同热解时间下制备焦，利用XPS表征两种反应器制备的焦及水洗后的焦样的表面结构差异，进而分析挥发分与焦的二次反应对纤维素热解焦结构的影响。研究结果表明，纤维素在一次反应过程中生成了C＝O双键。%In this paper,XPS is taken as the main means of analysis,and char is prepared in metal mesh reactor and horizon tube furnace reactor by heating cellulose at 300,℃. The surface structure of char in two reactors and of the char-washed samples is analyzed by XPS and the differences are made clear. Further,the impact of secondary reac-tions between volatile and char on the surface structure of cellulose is analyzed. The bond of C=O may be produced at the condition of minimized secondary reactions.