摘要
以小麦秸秆为原料采用磷酸活化法制备活性炭,考察了制备条件对活性炭性质的影响,并结合氮气吸附、TG-DDTG、SEM对其结构进行了表征。结果表明:在浸渍比为3∶1、活化温度450℃、升温速率3℃/m in的条件下活化60 m in,制得的麦秆基活性炭比表面积为1 279 m2/g,总孔容积为1.36 cm3/g,平均孔径为4.2 nm,有丰富的中孔,可用做大分子吸附材料。麦秆适合作为制备具有丰富大中孔的活性炭的原料。
Activated carbon was prepared from wheat straw by chemical activation with phosphoric acid and characterized by N2 adsorption,TG-DTG analysis,SEM.The results showed that activated carbon can be prepared at the impregnated ratio 3∶ 1,temperature 450 ℃,heating rate 3 ℃/min,time 60 min.Under this condition,activated carbon has the characters of specific surface area 1 279 m2/g,total volume 1.36 cm3/g,average pore diameter 4.2 nm.The activated carbon prepared from wheat straw has plenty of mesopore and could be used as absorbent material.
出处
《安徽农业科学》
CAS
北大核心
2011年第7期4162-4164,4166,共4页
Journal of Anhui Agricultural Sciences
基金
"十一五"国家科技支撑计划项目(2009BADB1B03)
林业公益性行业专项(201004051)
环境保护部南京环境科学研究所中央级公益性科研院所基本科研业务专项
关键词
小麦秸秆
活性炭
化学活化
N2吸附
热重分析
Wheat straw
Activated carbon
Chemical activation
N2 adsorption
TG analysis
