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헤테로폴리산이 혼성된 고분자 필름촉매 및 촉매막의 설계

Design of Heteropolyacid-Imbedded Polymer Films and Catalytic Membranes

서울대학교 공과대학 응용화학부, 서울 151-742 1강릉대학교 공과대학 공업화학과, 강릉 210-702
Division of Chemical Engineering, College of Engineering, Seoul National University, Shinlim-dong, Kwanak-ku, Seoul 151-742, Korea 1Department of Industrial Chemistry, Kangnung National University, Kangnung, Kangwondo 210-702, Korea
HWAHAK KONGHAK, June 2000, 38(3), 317-329(13), NONE
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Abstract

헤테로폴리산이 유기용매에 잘 녹는다는 특성을 이용하여 헤테로폴리산과 고분자 물질이 혼성된 필름촉매를 제조하고 이 필름촉매가 갖는 촉매적 특성에 대하여 연구하였다. 필름촉매의 경우 헤테로폴리산이 고분자물질에 고분산되어 분말상태막 반응기에로의 활용 가능성에 대하여 연구하였다. 필름촉매의 경우 헤테르폴리산이 고분자물질에 고분산되어 분말상태의 헤테로폴리산 보다 촉매의 활성이 훨씬 좋으며 필름을 제조할 때 사용하는 용매의 종류에 따라 헤테로폴리산이 갖고 있는 산성 촉매기능과 산화환원성 촉매기능을 제어할 수 있는 특성이 있음을 발견하였다. 또한 고분자 필름촉매를 다공성 알루미나관에 피막시키는 기술을 개발하여 고분자촉매막반응기의 실용 가능성을 입증하였다. 본 논문에서는 이들 필름촉매 및 촉매막의 제조과정, 특성 및 응용분야에 대해 살펴보았으며, 특히 기상과 액상 촉매반응에로의 응용, 선택적 분리에로의 응용, 촉매막반응기에로의 응용에 대해 기술하였다.
Taking advantage of a property that heteropolyaicds (HPAs) are highly soluble in some polar organic solvents, HPA-imbedded polymer films(film catalyst) were prepared and their catalytic characteristics were studied. Furthermore, utilizing the permselectivity of the film catalyst for the organic chemicals, its application to the catalytic membrane reactor was discussed. It was revealed that an activity of the film catalyst was much superior to the corresponding bulk catalysts due to the fine and uniform dispersion of HPA throughout the polymer film, and that its acidic and redox function could be controlled, depending on the solvent used during the preparation of film catalysts. Possibility of an application of the catalytic polymer membrane reactor was established by the development of a coating technique of the film catalyst on a porous alumina tube. Preparation procedures, characteristics and application areas of HPA-polymer film catalysts and catalytic membranes were reviewed in this report. Typical examples of the application of these catalytic materials to the vapor-phase and liquid-phase catalytic reactions, the selective separation, and the catalytic membrane reactors were described.

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