木质原料热解及活性炭结构的研究-林产化学与工业.PDF

24 3 Vol. 24 o. 3 2004 9 Chemistry and Industry of Forest Products Sept. 2004 戴伟娣, 陶渊博, 张燕萍, 蒋剑春 ( 中国林业科学研究院林产化学工业研究所, 江苏 南京210042) DAI W D : , , , 200~ 260 , 260~ 295 ,295~ 320 , 425 ~ 720 , 0. 124~ 0.222 mL /g,, ,, , , : ; ; :TQ424. 1 : A :0253- 2417( 2004)03- 0061- 04 STUDIES O PYROLYSIS OF WOODE MATERIAL A D STRUCTURE OF THE OBTAI ED ACT IVATED CARBO DAI We-i di, TAO Yuan-bo, ZHA G Yan-ping, JIA G Jian-chun ( Inst it ute of Chem ical I nd ust ry of Forest Prod ucts, CA F , N anj ing 210042, Chi na) Abstract: Pyrolysis of coconut shell was carried out in this study.Mechanism of coconut shell pyrolysis was studied using thermogravimetric analysis method.Similar to common wooden materials,coconut shell is also composed of se- m-i cellulose,cellulose and lignin. In coconut shell,sem-i cellulose decomposes at 200- 260 ,cellulose at 260- 295 and lignin at 295- 320 . The pore structure parameters of coconut shell activated carbon are studied. At car- bonizing temperature between 425 and 720 , the micropore volume is between 0. 124- 0.222 mL / g.Surface of the activated carbon is also observed by scanning electron microscopy( SEM) . During thermogravimetric analysis,the cell wall of coconut shell disassembles to form macropore at m level while its cellulose structurewas retained.The main trace elements in coconut shell carbon,such as Al, Ba,Fe, Mg,Ca,Si were measured by ICP. Key words: coconut shell; pyrolysis; activated carbon [1] , , , , , , :2004- 02- 03 : () :( 1954- ) , , , , 62