Preparation and properties of phenolic resin-based activated carbon spheres with controlled pore size distribution

被引:145
作者
Yang, JB [1 ]
Ling, LC
Liu, L
Kang, FY
Huang, ZH
Wu, H
机构
[1] Tsinghua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China
[2] Chinese Acad Sci, Inst Coal Chem, Taiyuan 030001, Shanxi, Peoples R China
关键词
activated carbon; adsorption; porosity; adsorption properties;
D O I
10.1016/S0008-6223(01)00222-6
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Three kinds of phenolic resin-based activated carbon spheres (P-ACS) with different pore size distribution were prepared successfully by adding pore-forming agents to novolac-type phenolic resin. Polyethylene glycol and polyvinyl butyral, serving as pore-forming agents, evaporated during pyrolysis and left a small amount of carbon residue in the matrix of the phenolic resin-based carbon, thus chancing the carbonization and activation behavior of the resin. Mesopores between 3 and 5 rim were created in the P-ACS, which possessed excellent adsorption properties for creatinine. Ferrocene has little effect on the carbonization process of the phenolic resin, but has a great impact on the activation process. Mesopores and macropores with a range from 3-5 to 10-90 nm were produced in the P-ACS, which exhibited large adsorption properties for VB(12), a larger molecule than creatinine. P-ACS without pore-forming agents exhibited a small specific surface area and mainly micropores, which resulted in a very small amount of creatinine and VB(12) adsorbed. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:911 / 916
页数:6
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