摘要
以杉木屑为原料,在传统磷酸法工艺过程中添加辅助催化剂浓硫酸,制备超高比表面积颗粒活性炭。研究浓硫酸添加量、浸渍时间以及浸渍比对颗粒活性炭比表面积的影响。结果表明,浓硫酸添加量和浸渍时间在磷酸法制备超高比表面积颗粒活性炭中发挥着重要的作用,当浸渍时间为15 h、浓硫酸添加量为6%、浸渍比为2.1∶1和浸渍时间为5 h、浓硫酸添加量为3%、浸渍比为2.1∶1时,分别制备出比表面积为2 825、2 811 m2/g的颗粒活性炭、总孔容分别为1.60、1.59 cm3/g,丁烷工作容量分别为154.8、157.3 g/L。
Super-high specific surface area granular activated carbon （GAC） from China fir sawdust was prepared through adding concentrated sulfuric acid in the traditional technology by phosphoric acid activation method. Influences of different dosage of concentrated sulfuric acid, impregnation time and impregnation ratio on specific surface area was studied. The results showed that both of the dosage of concentrated sulfuric acid and impregnation time had great influence on specific surface area of GAC by phosphoric acid method. The GACs prepared under the conditions of impregnation time 15 h, dosage of concentrated sulfuric acid 6 % , impregnation ratio 2.1 ： 1 and impregnation time 5h, dosage of concentrated sulfuric acid 3 %, impregnation ratio 2.1 ： 1 gave the BET surface area of 2 825 and 2 811 m^2/g, the total pore volume of 1.60 and 1.59 cm^3/g, and butane working capacity （BWC） of 154.8 and 157.3 g/L, respectively.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
2014年第1期113-116,共4页
Chemistry and Industry of Forest Products
基金
公益性行业科研专项(2012104006-5)
关键词
磷酸
硫酸
杉木
颗粒活性炭
丁烷工作容量
phosphoric acid
sulfuric acid
China fir
granular activated carbon
butane working capacity
