한국연초학회지 (Journal of the Korean Society of Tobacco Science)

한국연초학회 (The Korean Society of Tobacco Science)
권호 표지

표면 개질된 활성탄소 섬유의 Propylamine 탈착과 XPS 분석

Thermal Desorption of Propylamine and XPS Analysis on Surface Modified Activated Carbon Fibers

  • 발행 : 2005.06.01
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초록

Activated carbon fiber (ACF) was surface modified by nitric acid to improve the adsorption efficiency of the propylamine. The adsorption amount of propylamine of the modified ACF increased $17\%$ more than that of as-received ACF. Desorption of propylamine from the propylamine saturated ACF was occurred in two steps, the first step started arround $50^{\circ}C$ showing the desorption of physically adsorbed propylamine and the second step started at $200^{\circ}C$ showing the decomposition of chemically adsorbed propylamine. Total desorption amount of propylamine from the modified ACF was larger than that of the as-received ACF because of increased functional groups. The oxygen and nitrogen contents on the modified ACF increased by 1.5 and 3 times compared with the as-received ACF. A part of propylamine adsorbed on ACF formed pyridine-like or pyrrolic structures with 2 carbons exposed on the surface of the ACF. It was found that propylamine reacted with strong or weak acidic functional groups such as -COOH or -OH existed on ACF surface.

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참고문헌

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