摘要
研究提出了一种简单的高丁烷工作容量（BWC）颗粒活性炭（GAC）的制备方法。在磷酸法制备活性炭的工艺中通过添加浓硫酸作为助催化剂,以杉木屑为原料制备了BWC高达165 g/L的产品,其表观密度为241 g/L,比表面积、总孔容、微孔孔容和平均孔径分别为2 627 m^2/g、1.574 cm^3/g、0.941 cm^3/g和2.397 nm。正交试验结果表明较佳的工艺条件为：磷酸浓度为56%,浸渍比为1.9∶1,硫酸添加量为6%,硫酸浓度为80%,干燥固化温度为300℃,干燥固化时间为3 h,活化温度为450℃,活化时间为60 min,并且浓硫酸和活化温度是制备丁烷吸附用颗粒活性炭的重要影响因素。通过本研究可将高BWC颗粒活性炭制备时间从20-70 h缩短在5 h以内。
A simple route has been developed for preparing granular activated carbon（GAC） with high butane working capacity（BWC）.Concentrated sulfuric acid was used during phosphoric acid activation for the production of the activated carbon.A granular activated carbon with high BWC of 165g/L and an apparent density of 241g/L was obtained from China fir sawdust.Simultaneously specific surface area,total pore volume,micropore volume and average pore diameter of the GAC reached 2627m^2/g,1.574cm^3/g,0.941cm^3/g and 2.397 nm,respectively.The results of orthogonal test showed that the adopted combination of factors is： phosphoric acid concentration 56%,impregnation ratio 1.9∶1,sulfuric acid amount 6%,sulfuric acid concentration 80%,drying temperature 300℃,drying time 3h,activation temperature 450℃ and activation time 60 min.It was also seen that the dosage of concentrated sulfuric acid and activation temperature were the most important factors for preparing GAC for butane adsorption.Finally,compared to previous studies,this study can shorten the preparation period from 20-70h to less than 5h.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
2011年第3期17-22,共6页
Chemistry and Industry of Forest Products
基金
林业公益性行业专项项目(201004051)
“十一五”国家科技支撑计划资助(2009BADB1B03)
中国林科院林业新技术所基本科研业务费专项基金(CAFINT2009K02)
福建省自然科学基金项目(2009J01237)
关键词
颗粒活性炭:丁烷工作容量
正交试验
杉木
磷酸
硫酸
granular activated carbon
butane-working capacity
orthogonal test
China fir
phosphoric acid
sulfuric acid
作者简介
朱光真（1985-），男，安徽蚌埠人，硕士生，主要从事活性炭的制备与应用研究；E-mail：zhuguangzhen1985@126．com
通讯作者：邓先伦（1956-），男，研究员，硕士生导师，主要从事炭质吸附材料的制备机理与应用研究；E-mail：dengxianlun_483@163．com。
