文章基本信息

标题：ADSORPTION CHARACTERISTICS OF CARBON NANOTUBES BY LOW TEMPERATURE NITROGEN ADSORPTION EXPERIMENT
本地全文：下载
作者：Dameng Gao ; Lin Hong ; Jiren Wang 等
期刊名称：Fresenius Environmental Bulletin
印刷版ISSN：1018-4619
出版年度：2020
卷号：29
期号：3
页码：1550-1563
语种：English
出版社：PSP Publishing
摘要：In order to study the characteristics of carbon nanotubes, a series of N2 at 77.4 K adsorption experiment were carried out in the laboratory, and the adsorption isotherms of different types of carbon nanotubes (CNTs) were obtained. The micropore and mesopore size distributions of CNTs were determined using the modified Horvath-Kawazoe and BJH models based on the adsorption-desorption isotherms. And the adsorption capacities of CNTs in different adsorption stages, such as the micropore volume filling stage, multi-layer adsorption stage and capillary condensation stage, were evaluated based on the adsorption isotherms. The results show that the maximum pore size of CNTs corresponding to the pore volume filling is about 9 nm. The amount of N2 adsorbed in the tube of CNTs is negative with the pore size. However, the amount of N2 in the status of capillary condensation is positive with the pore size of CNTs.
关键词：Carbon naiiotubes (CNTs); N2 at 77.4K adsorption experiment; pore size distribution;pore volume filling; capillary condensation; adsorption capacity