期刊
INDUSTRIAL CROPS AND PRODUCTS
卷 27, 期 3, 页码 341-347出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.indcrop.2007.11.011
关键词
carbonized tobacco stems; microwave radiation; K2CO3; high surface area; pore size distribution
In this paper, activated carbons with high surface area from carbonized tobacco stems with K2CO3 activation by microwave radiation were investigated. Effects of microwave radiation time and K2CO3/C ratio on the yield and adsorption capacities of activated carbons were evaluated. Experimental results indicated that the optimum conditions were as follow: microwave power 700W, microwave radiation time 30 min; K2CO3/C ratio 1.5:1. Iodine number, amount of methylene blue adsorption and the yield of activated carbon prepared under optimum conditions were 1834 mg/g 517.5 mg/g and 16.65% respectively. Surface area, micropore volume and pore size distribution (PSD) of the carbons were determined by the BET, H-K and DFT methods. Results showed that activated carbons had a micropore content about 59.98% and a small number of mesopores and macropores; BET specific surface area and total pore volume were 2557 m(2)/g and 1.647 cm(3)/g, respectively. (c) 2007 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据