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|
| Type |
Poster Presentation |
| Area |
Industrial Chemistry |
| Room No. |
Exhibition Hall 2 |
| Time |
4월 19일 (금요일) 11:00~12:30 |
| Code |
IND.P-59 |
| Subject |
H2O2/steam activation as an eco-friendly and efficient top-down approach to enhancing porosity on carbonaceous materials : oxygen functionalities on the carbon adsorbent for CO2 capture performance |
| Authors |
Young-Jung Heo, Soo-Jin Park*
Department of Chemistry, Inha University, Korea
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| Abstract |
The increasing concentration of carbon dioxide(CO2) in the atmosphere is considered a major contributor to global climate changes; therefore, solid adsorbents, including porous carbon materials, have been developed as CO2 capturing materials. Steam activation is a common method known to be effective in developing optimal micropores for CO2 adsorption on carbon surfaces. However, it is less efficient at improving porosity compared to common chemical activation. Here, we pro-pose an approach to improving the efficiency of steam activation in developing microporosity for CO2 capture. In this activation, hydrogen peroxide (H2O2) generates the 2·OH radical in dissociation reactions at high temperatures, and a two-fold enhancement effect has been observed as compared with steam activation. However, oxygen functionalities are highly generated on carbon surfaces, which interferes with CO2 capture performance (e.g., uptake, selectivity, adsorption rate). We used thermal reduction for removing oxygen functionalities on the carbon surface, which showed significantly en-hanced CO2 capture performance. The H2O2/steam activation approach could provide an opportunity for improving the textural properties of carbonaceous materials. Furthermore, our work could provide evidence that the oxygen functionalities of solid carbonaceous adsorbents influence CO2 capture performance, including practical applications. |
| E-mail |
heoyj1211@naver.com |
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123rd General Meeting of the KCS