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| Type |
Poster Presentation |
| Area |
Material Chemistry |
| Room No. |
Exhibition Hall 2+3 |
| Time |
10월 19일 (목요일) 11:00~12:30 |
| Code |
MAT.P-375 |
| Subject |
Gas Sorption on Nitrogen-doped Polar Carbons |
| Authors |
JOO-WOON LEE
School of Liberal Arts and Sciences, Korea National University of Transportation, Korea |
| Abstract |
Templated carbons can have specific surface areas of 1500-1800 m2/g and average pore diameters of 2-11 nm. Nitrogen-doping these carbons modify their charge promoting their binding of ions and increasing thereby electrolyte permeation. Research presented here is the synthesis of a phase-pure crystalline precursor of a nitrogen-doped carbon, LaNTA∙H2O, where NTA is the tribasic nitrilotriacetate anion. Its pyrolysis at different temperatures followed by acid-extraction of the formed La2O3 yields nitrogen-doped templated carbons. They contain 1.4 to 7.9 atomic % of nitrogen at surface composition, the nitrogen content decreasing as pyrolysis temperature is increased. While the specific surface area increases from 330 to 1740 m2/g. Thermogravimetric analysis (TGA) is performed to determine gas adsorption-desorption characteristics of the nitrogen-doped carbons. These carbons initially adsorb 4 to 19 % of their weight from ambient room air (nitrogen, oxygen, moisture, etc.), and rapidly and reversibly ad/desorb dried air in TGA profile. The sorption capacity decreases as the pyrolysis temperature is increased. This was supported by Korea National University of Transportation in 2017. |
| E-mail |
jwoonlee@ut.ac.kr |
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120th General Meeting of the KCS