The Study of Activated Carbon From Sugar

• Main Authors: Su, Cheng-Lin, 蘇宗麟
• Other Authors: Tse-Hao Ko
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/25666700301066135210

碩士 === 逢甲大學 === 材料科學研究所 === 85 === ABSTRACT In this study, we try to use sugar as the precursor to activated carbon. The experiment includes the action of precursor at carbonization (heat treatment temperature ranging from 600 to 1000℃),and also the behavior of precursor within carbonization and activation in one step (activated steam 0.50~1.00 min for 10min at each temperatures ).In-order to find out the effect of sugarthe physical properties and microstructure, the microstructure was investigated by element analysis、X-ray diffraction、Raman laser scattering and SEM. The analysis of physical properties were carried out with density、 weight loss. Besides, the effect of activations on porosity of carbon was characterized by nitrogen adsorption and desorption at 77K, the N2 surface area and pore size distribution were calculated by using the BET equation and the procedure developed by Barrett et al[1]. When heat treatment temperature (HTT) raised, there is a increasing tendency of weight loss and density of the samples, it also found at the surface are a lot of porous structure by SEM observation, and the amount of pores increase as the treatment steam increases. From X-ray and Raman laser scattering analysis, we found that molecule H2O can penetrate into the carbon, it would led to connect the internal and exteroal pore systems in samples, the stacking (Lc)decrease and the length (La) of carbon layers were suudied as a function of both temperature and steam pyrolysis. On the other hand, the distribution of pores are mainly mesopores,the activated carbon produced with steam pyrolysis have the highest specific surface area of 688.8 (m2/g).Within the studies of sugar, we found it is feasible to be an adsorbent.