化学工程2011，Vol.39Issue(10)：19-21,25,4.
容量法测定载体活性炭的比表面积
Specific surface area determination of active carbon support by volumetric method
宋军 1王鉴 1汪丽 2宋刚 3赵薇1
作者信息
- 1. 东北石油大学化学化工学院,黑龙江大庆163318
- 2. 中国石油大庆炼化公司,黑龙江大庆163411
- 3. 总参通信训练基地,河北张家口075100
- 折叠
摘要
Abstract
The specific surface area of active carbon is one of the important physical structure parameters, and the accuracy of its measured value is essential for realistic reference significance. The volumetric method was adopted to measure the specific surface area of active carbon by NOVA2000e surface area & pore size analyzer, and the factors affecting the measured value of specific surface area of active carbon, such as the conditions of sample pretreatment and adsorption point numbers, were discussed. The results show that the optimum condition of sample pretreatment is to desorbe for more than 5 h at 300℃. The measured value of specific surface area of sample treated under such conditions is closer to the actual value. The measured value of specific surface area of sample by multipoint BET method attains better accuracy with the increase of adsorption points. When the adsorption point is 5, the relative error of the measured value is only 1.15%. Single point BET method can be used as an approximate method, and the relative error of the single point BET value measured by this analyzer is about 5%. In the allowable experimental accuracy range, the measurement of materials surface area by the single point BET method is quite simple and effective.关键词
活性炭/比表面积/容量法Key words
active carbon/specific surface area/volumetric method分类
通用工业技术引用本文复制引用
宋军,王鉴,汪丽,宋刚,赵薇..容量法测定载体活性炭的比表面积[J].化学工程,2011,39(10):19-21,25,4.
