| Synthesis of Nanoporous Carbon as a Gas Adsorbent by Reverse Replication Process of Silica Template |
| Churl-Hee Cho, Joon-Soo Kim, Hong-Soo Kim, Young-Soo Ahn, Moon-Hee Han, Jong-Sung Yoo1 |
Korea Institute of Energy Research
1Department of Chemistry, Hannam University |
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| ABSTRACT |
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Porous carbon with high surface area and pore volume was prepared by a reverse replication process and its toluene equilibrium adsorption behavior was investigated. The preparation process of the porous carbon was composed of fellowing sub-processes in series: synthesis and template preparation of silica gel, impregnation and polymerization of DVB monomer in silica template, carbonization of DVB polymer in a silica-polymer composite, and HF-assisted selective etching of silica in carbon-silica composite. The prepared porous carbon was nano porous and had ultrahigh specific surface area (2007 ㎡/g) and large pore volume (3.07 ㎤/g). The nanoporous carbon showed rapid toluene adsorption rate and good toluene adsorption capacity, compared with a commercial Y-type zeolite. In the present study, a reverse replication process to prepare nanoporous carbons will be introduced and its application potential as a gas adsorbent will be discussed. |
| Key words:
Nanoporous carbon, Silica template, Reverse replication process, Toluene equilibrium adsorption |
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