期刊
JOURNAL OF POROUS MATERIALS
卷 22, 期 1, 页码 283-289出版社
SPRINGER
DOI: 10.1007/s10934-014-9894-4
关键词
Hemp stem; Activated carbon; Phosphoric acid activation; Porous structure
资金
- Polish Ministry of Science and Higher Education
A series of activated carbons (ACs) were produced by chemical activation of hemp stem with phosphoric acid in nitrogen and steam atmospheres. The potential of hemp-derived waste for the manufacture of porous carbons with a wide spectrum of porosity, ranging from microporous to mesoporous, has been demonstrated. The influence of the variables, such as the H3PO4/hemp stem impregnation ratio, the soaking time and the gaseous atmosphere, on the porosity development was studied. Depending on the processing conditions, the H3PO4 activation produces ACs with a wide range of textural parameters, reaching surface areas > 2,500 m(2)/g, micropore pore volumes up to 0.89 cm(3)/g and mesopore volumes up to 1.80 cm(3)/g. The amount of H3PO4 used in the impregnation step affects the porous texture of the resultant ACs to a greater extent than the soaking time. At low and medium impregnation ratios, a steam atmosphere favors the formation of mesopores during H3PO4 activation.
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