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Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received November 12, 2004
Accepted December 28, 2004

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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폴리이미드의 탄화 처리에 의한 SiC 분리막의 가스투과 특성

Gas Permeation Characteristics of the Prepared SiC Membrane through Polyimide Carbonization Treatmemt

최호상^† 황갑진¹ 강안수²

Ho-Sang Choi^† Gab-Jin Hwang¹ An-Soo Kang²

경일대학교 생명화학공학과, 715-701 경북 경산시 하양읍 부호리 33 ¹한국에너지기술연구원 수소에너지연구센터, 305-343 대전시 유성구 장동 71-2 ²명지대학교 화학공학과, 449-728 경기도 용인시 남동 산38-2

Department of Biological & Chemical Engineering, Kyungil University, 33, Buho-ri, Hayang-up, Gyeongsan, Gyeongbuk 712-701, Korea ¹Hydrogen Energy Research Center, Korea Institute of Energy Research, 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Korea ²Department of Chemical Engineering, Myongji University, San 38-2, Nam-dong, Yongin 449-728, Korea

choihs@kiu.ac.kr

Korean Chemical Engineering Research, February 2005, 43(1), 66-70(5), NONE Epub 4 March 2005

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Abstract

IS 프로세스의 HI 분해 반응에서의 적용을 위해 고분자재료(폴리이미드)를 이용하여 탄화 막을 제작하고, 이 탄화막에 SiO를 처리함으로써 SiC 막을 제작하였다. 폴리이미드의 탄화에 의한 중량 감소는 약 50% 정도이고, 탄화 온도가 증가할수록 중량감소도 증가하였다. 탄화막은 탄화온도가 상승하면 가스 투과속도가 감소하고 막의 치밀화가 진행되었다. SiC 막은 SiO의 처리 농도가 증가하면 가스 투과 속도는 증가하고, 기체 투과 메커니즘은 활성화에너지 흐름에서 Knudsen 흐름으로 변화한다는 것을 알 수 있었다.

For the application in HI decomposition reaction of thermochemical water-splitting IS process, the carbonized membranes using the polymer material (polyimide) were prepared, and SiC membrane was also prepared by SiO treatment on those carbonized membranes. The weight change by the carbonation of polyimide was about 50%, and the weight decreased with an increase of carbonation temperature. The gas permeance (H2 or N2) of carbonized membrane decreased with an increase of carbonation temperature led to the pore closing. The gas permeance (H2 or N2) of SiC membrane increased with an increase of SiO treatment concentration, and the gas permeation mechanism was changed from the activiation energy flow to Knudsen flow.

Keywords

Thermochemical Water-Splitting IS Process SiC Membrane Carbonized Membrane Hydrogen Permselective Membrane

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