水热碳化反应条件对淀粉碳化材料性能的影响  

Effects of hydrothermal carbonization condition on characteristics of starch carbonaceous spheres

作　　者：李正文[1] 张小伟[1] 章文贵[1] 李晓栓[1] 余定华[1] 

机构地区：[1]南京工业大学生物与制药工程学院材料化学工程国家重点实验室,江苏南京210009

出　　处：《南京工业大学学报（自然科学版）》2013年第6期97-102,共6页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家科技部支撑计划(2012BAD32B00)

摘　　要：通过水热碳化反应合成了尺寸均一的球状碳化材料。利用扫描电子显微镜(SEM)、傅里叶变换红外光谱仪(FT-IR)、热分析仪及N2吸附-脱附的方法研究合成条件对碳化材料形态、表面官能团及热解行为的影响。结果表明:水热合成的温度和时间是影响这些性质的重要条件。碳化球的形貌随着水热合成温度上升和时间延长而变得更加规整。表面官能团的数量却随着合成温度上升和时间延长而逐渐减少。另外温度的升高和时间的延长最终导致了碳化材料孔结构的产生。最后基于实验结果提出碳化球形成的奥斯特瓦尔德熟化机制。Ordered spherical carbonaceous materials were synthesized through hydrothermal carbonization （HTC） of starch. The effects of synthesis condition on morphology, functional groups and decomposition behavior were studied by several physic-chemical method, such as scanning electron microscopy （SEM） , Fourier transform infrared spectroscopy （FT-IR）, thermogravimetric analysis, and N2 adsorption-desor- plion. Results showed that hydrothermal temperature and time were important parameters for those proper- ties. The increasing of the hydrothermal temperature and time increased the uniformity of spheres and de- creased the oxygen-containing functional group amounts. Furthermore, the porous structure was also gen- erated with the increasing of hydrothermal temperature and time. Finally, based on the experimental re- suits, a possible sphere formation mechanism was proposed.

关 键 词：碳球 水热合成 淀粉 傅里叶变换红外光谱 N2吸附 

分 类 号：TQ03[化学工程]