Effect of calcium on the activation characteristics and pore structure of phenolic resin-based carbon spheres

被引：0

作者：

Yang, Junbing ^{[1
]}

Kang, Feiyu ^{[1
]}

Huang, Zhenghong ^{[1
]}

Liang, Kaiming ^{[1
]}

机构：

[1] Dept. of Mat. Sci. and Eng., Tsinghua Univ., Beijing 100084, China

来源：

Qinghua Daxue Xuebao/Journal of Tsinghua University | 2002年 / 42卷 / 10期

关键词：

Additives - Adsorption - Calcium - Chemical activation - Pore size;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Phenolic resin-based activated carbon spheres (PACS) with high mesopore volume were successfully prepared by the addition of calcium nitrate into the novolac-type phenolic resin. N2 adsorption was used to characterize the pore structure of the prepared PACS. The results shows that the calcium enhances the burning rate of the carbon spheres and reduced the micropore surface area with little influence on their pore size distribution. The calcium-containing activated carbon spheres have preponderant mesopores 3-4 nm in size and a high mesopore ratio. Continued activation increased the number of mesopores larger than 4 nm; but had little effect on the 3-4 nm size mesopores, which indicted different mechanisms for mesopore evolution in calcium-containing activated carbon spheres.

引用

页码：1297 / 1299