Influence of surface-active agents on pore characteristics of the generated spherical resorcinol-formaldehyde based carbon aerogels

被引：33

作者：

Horikawa, T

Ono, Y

Hayashi, J

Muroyama, K

机构：

[1] Kansai Univ, Dept Chem Engn, Suita, Osaka 5648680, Japan

[2] Kansai Univ, High Technol Res Ctr, Suita, Osaka 5648680, Japan

来源：

CARBON | 2004年 / 42卷 / 12-13期

关键词：

carbon aerogel; carbonization; scanning electronic microscopy; adsorption;

D O I：

10.1016/j.carbon.2004.06.015

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：

Spherical resorcinol-formaldehyde (RF) aerogel particles were synthesized by emulsion polymerization of resorcinol with formaldehyde in a slightly basic aqueous solution, followed by supercritical drying with carbon dioxide. The carbon aerogel particles were prepared by carbonizing the RF aerogel particles at a high temperature under a nitrogen atmosphere. We investigated the influence of the surface-active agents applied upon emulsion polymerization on the form, the size, and the characteristic pore structure of the generated carbon aerogel particles. We found an important relationship between the surface-active agents and the pore structure of the carbon aerogel particles; a lower hydrophile-lipophile balance (HLB) value of the surface active agent leaded to large micro and mesopore volumes and also a large specific surface area in the generated spherical carbon aerogel particles. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：2683 / 2689

页数：7

共 39 条

[1] Preparation and properties of resorcinol-formaldehyde organic and carbon gels [J].