首页> 中文期刊> 《机械工程材料》 >以花生壳为原料制备生物形态多孔炭及其非等温氧化性能

以花生壳为原料制备生物形态多孔炭及其非等温氧化性能

         

摘要

以花生壳为原料,利用控温炭化得到了保留原材料生物学特征结构的多孔炭,采用XRD、SEM等对多孔炭的组成、形貌、非等温氧化质量损失曲线进行了研究。结果表明:多孔碳具有蜂巢状孔结构,其孔径约为10μm,另有不少横向带状物连结着各个孔;其相组成为典型的非晶态石墨碳,随炭化温度升高,(002)面峰强增大,晶面间距增加,结构逐渐向理想石墨靠近;非等温氧化速率先升高后降低,这是由于组成多孔炭的石墨烯片层结构中活性炭原子数量随氧化反应的进行发生变化所致。%Taking peanut shell as raw material, porous carbon which retained biological anatomical features was prepared by temperature-control carbonizing. Composition, morphology, non-isothermal oxidation weight loss curves of porous carbon were studied by SEM, XRD, etc. The results show that the porous carbon had comby pore and the pore diameter were about 10 μm, and different pores were connected by many transverse ribbons. The porous carbon was a typical amorphous state graphic carbon, with increase of carbonization temperature, the (002) peak strength increased, the interplanar spacing increased and the structure slowly evolved toward ideal graphite. The nowisothermal oxidation rate of porous carbon firstly increased and then decreased for the number of activated carbon atom in alkene layer structure changed with oxidation reaction going.

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