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|
| Type |
Poster Presentation |
| Area |
Industrial Chemistry |
| Room No. |
Grand Ballroom |
| Time |
10월 19일 (금요일) 11:00~12:30 |
| Code |
IND.P-14 |
| Subject |
H2O2/steam activation as an eco-friendly and efficient topdown approach to enhancing porosity on carbonaceous materials for CO2 capture |
| Authors |
Young-Jung Heo, Soo-Jin Park*
Department of Chemistry, Inha University, Korea
|
| Abstract |
In carbonaceous materials,physical activation by steam or carbon dioxide (CO2) is a common top-down method that is known to be effective for developing nanopores on carbon surfaces. However, it is less efficient at improving porosity compared to common chemical activation. Here, we propose a simple and eco-friendly approach to improving the efficiency of physical activation in developing porosity on carbonaceous materials. Using hydrogen peroxide (H2O2) as an activating agent with pressure in the reactor resulted in significant enhancement compared with steam activation without pressure. However, a high number of oxygen functionalities were generated on the carbon surfaces, which interfered with CO2 capture performance (e.g., uptake, selectivity, and the adsorption rate). We used thermal reduction to remove oxygen functionalities on the carbon surface, which overcame the CO2 affinity and uptake loss caused by the oxygen functionalities. Therefore, H2O2/steam activation approach may be a way to improve the textural properties of carbonaceous materials. Furthermore, our work provides 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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122nd General Meeting of the KCS