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Received May 6, 2013
Accepted May 31, 2013
Available online July 23, 2013
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Cu 담지 Ti-SBA-15 촉매의 선택적 CO 산화 반응
Preferential Oxidation of CO over Cu/Ti-SBA-15 Catalysts
희성촉매(주), 429-913 경기도 시흥시 정왕동 1251-6 1효성(주), 431-799 경기도 안양시 동산구 시민대로 74 2SK이노베이션, 305-712 대전광역시 유성구 엑스포로 325 3경희대학교 화학공학과, 446-701 경기도 용인시 기흥구 덕영대로 1732
Diesel Catalysts Team, Heesung Corp., #507-1 Da, 1251-6 Jungwang-dong, Siheung-si, Gyeonggi 429-913, Korea 1Polymerization Research Group, Hyosung Corp., 74 Simin-daero, Dongan-gu, Anyang-si, Gyeonggi 431-799, korea, Korea 2Catalyst Process R&D center, SK innovation, 325 Expo-ro, Yuseing-gu, Daejeon 305-712, Korea 3Department of Chemical Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi 446-701, Korea
sjchoung@khu.ac.kr
Korean Chemical Engineering Research, August 2013, 51(4), 432-437(6)
https://doi.org/10.9713/kcer.2013.51.4.432
https://doi.org/10.9713/kcer.2013.51.4.432
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Abstract
고분자 전해질 연료전지 구동 시 양극 활성 물질에 대한 CO 피독을 방지하기 위해 Cu를 촉매 활성 종으로 사용하고 반응물의 확산이 용이한 몇 가지 메조 세공 물질을 지지체로 이용하여 CO 선택적 산화 반응(PROX반응)을 실시하였다. 그 결과 거대 세공을 가진 SBA-15를 지지체로 사용했을 때 우수한 CO 산화 활성을 보였으며 특히 Cu 담지 량에 비례하여 활성은 증가하였다. 또한 Cu의 분산도를 높이고자 첨가한 Ti 성분은 저온에서 CO 산화 성능을 높이는데 기여하였다. 특히 Ti 성분을 20 wt-% 첨가한 Cu/Ti20-SBA-15 촉매에서 Cu의 분산도가 가장 우수하였으며 CO 산화 활성 역시 개선됨을 확인하였다.
The CO preferential oxidation reaction (PROX) has been done using Cu catalytic active species supported on some of mesoporous silica materials which can facilitate the diffusion of the reactants in order to prevent the poisoning of anode active materials by CO molecules during driving polymer electrolyte fuel cells (PEMFC) in this study. As a result when SBA-15 with large pore used as a support showed excellent CO oxidation activity, especially the activity increased in proportion to the amount of supported Cu. Ti components which was inserted to increase the degree of dispersion of Cu, contributed to improving the performance for CO oxidation at low-temperature. The degree of dispersion of Cu ingredients was the best in the catalyst inserted 20 mol-% Ti into the framework of SBA-15, and CO oxidation activity was also improved.
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