期刊
APPLIED SURFACE SCIENCE
卷 252, 期 23, 页码 8062-8066出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2005.10.009
关键词
active carbon; chemical activation; pore-size distribution
Activated carbons were prepared from granulated post-consumer PET by combined activation including heat treatment with sulphuric acid (chemical activation) followed by steam activation. The effect of activation time, temperature, impregnation coefficient in the activation process was studied in order to optimize those reception parameters. One of the most important parameter in combined activation of crushed PET was found to be impregnation coefficient. It was defined that the optimal impregnation coefficient is equal 28%. Activation temperature is another variability which has a significant effect on the pore volume evolution. The increasing of activation temperature enhances the surface area and pore volumes of active carbons. The yield of final product which composes of nearly 15% is the factor limited the activation temperature above 800 degrees C. Textural characteristics of the samples were carried out by performing NZ adsorption isotherm at -196 C. The obtained active carbons were mainly micro-and mesoporous and with BET apparent surface areas of up to 1030 m(2)/g. The adsorption capacity on methylene blue reaches 1.0 mmol/g, the sorption activity on iodine comes to 77%. (c) 2005 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