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논문 기본 정보

자료유형
학술저널
저자정보
Ryu, S.K. (Department of Chemical Engineering, Chungnam National University) Eom, S.Y. (Department of Chemical Engineering, Chungnam National University) Cho, T.H. (Department of Chemical Engineering, Chungnam National University) Edie, D.D. (Center for Advanced Engineering Fibers and Films, Clemson University)
저널정보
한국탄소학회 Carbon science Carbon science 제4권 제4호
발행연도
2003.1
수록면
168 - 174 (7page)

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Silver nitrate ($AgNO_3$) powder was mixed into a reformed pitch precursor. Then, the silver-containing pitch was melt spun to form round and "C" shape fibers. A wire mesh was inserted prior to the nozzle to improve the spinnability of the silvercontaining precursor pitch. Silver particles in the carbon fibers (CFs) were detected by XRD and TEM. These tests showed that silver particles were uniformly distributed and the total amount of silver remained constant during stabilization and carbonization. Next, the silver-containing CFs were activated by steam diluted in nitrogen gas. Silver particles accelerated the activation rate, but the specific surface areas of the silver-containing ACFs were similar to those of non-silver containing ACFs at the same burn-off levels. The specific surface area of the C-shaped activated carbon fibers was larger than that of the round activated carbon fibers. The likely reason is that the surface area of a C-shaped CF is about two times larger than that of a round CF when equivalent cross-sectional areas are compared. A small amount of silver particles in the periphery of the CFs was removed during the activation, but the remainder of silver was stayed within the ACFs.

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