摘要
以木炭和黏土为原料,采用物理法制备炭陶复合吸附材料,讨论温度和保温时间对其吸附性能的影响,采用扫描电镜(SEM)和全自动比表面积及孔径分析仪对其微观结构和孔径分布进行表征,提出原位活化的思路。结果表明:热处理过程中,木炭的收缩在木炭和陶土之间形成发达的孔隙;黏土在烧结之后并没堵塞活性炭的孔隙结构;块状炭陶的吸附性能比粉状的高;炭陶在制备过程中受原位活化作用。在较优的工艺条件下,炭陶复合吸附材料的亚甲基蓝吸附值和碘吸附值分别为127.5和543.6 mg·g-1。
The preparation of carbon /pottery composite from wood charcoal and clay was made with physical method and the effect of temperature and holding time on the adsorption capability of carbon /pottery composite was discussed in this paper.In addition,microstructure and pore distribution of carbon /pottery composite were characterized by SEM and BET and the idea of in situ activation was proposed.The results show the pore between wood charcoal and pottery developed during heating treatment while the clay did not block the pore structure of wood charcoal.On the other hand,the adsorption capability of lumpish shape was higher than pulverous shape.Furthermore,the activated reaction of carbon / pottery composite could be defined as in situ activation.Therefore,under optimized experimental condition,the adsorption values of methylene blue and iodine of carbon /pottery composite were 127.5 and 543.6 mg.g-1 respectively.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2010年第12期125-129,共5页
Scientia Silvae Sinicae
基金
国家自然科学基金资助项目(30771682)
福建省自然科学基金计划资助项目(E0710002)
国家林业局南方山地用材林培育重点实验室共同资助
关键词
炭陶复合材料
孔径分布
原位活化
活性炭
carbon /pottery composite
pore distribution
in situ activation
activated carbon
