수성가스전이반응(Water Gas Shift Reaction)을 위한 Ce 첨가에 따른 Cu/Mn 촉매의 활성 연구

박지혜; 임효빈; 황라현; 백정훈; 구기영; 이광복

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자료유형: 학술저널

저자정보: 박지혜 임효빈 황라현 백정훈 구기영 이광복

저널정보: 한국수소및신에너지학회 한국수소및신에너지학회논문집 한국수소 및 신에너지학회 논문집 제28권 제1호

발행연도: 2017.2

수록면: 1 - 8 (8page)

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Cu/Mn/Ce catalysts for water gas shift (WGS) reaction were synthesized by urea-nitrate combustion method with the fixed molar ratio of Cu/Mn as 1:4 and 1:1 with the doping concentration of Ce from 0.3 to 0.8 mol%. The prepared catalysts were characterized with SEM, BET, XRD, XPS, H2-TPR, CO2 TPD, N2O chemisorption analysis. The catalytic activity tests were carried out at a GHSV of 28,000 h-1 and a temperature range of 200 to 400°C. The Cu/Mn(CM) catalysts formed Cu-Mn mixed oxide of spinel structure (Cu1.5Mn1.5O4) and manganese oxides (MnOx). However, when a small amount of Ce was doped, the growth of Cu1.5MnO4 was inhibited and the degree of Cu dispersion were increased. Also, the doping of Ce on the CM catalyst reduced the reduction temperature and the base site to induce the active site of the catalyst to be exposed on the catalyst surface. From the XPS analysis, it was confirmed that maintaining the oxidation state of Cu appropriately was a main factor in the WGS reaction. Consequently, Ce as support and dopant in the water gas shift reaction catalysts exhibited the enhanced catalytic activities on CM catalysts. We found that proper amount of Ce by preparing catalysts with different Cu/Mn ratios.

#Water gas shift #Urea-ni-trate combustion #urea-nitrate 연소 #Cu/Mn catalyst #Catalytic activity #촉매활성 #수성가스전이 #구리/망간 촉매

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참고문헌 신청

M. Mikkelsen / 2010 / The teraton challenge. A review of fixation and transformation of carbon dioxide / Energy Environ. Sci. 3(1):43~81

임효빈 / 2014 / Water Gas Shift 반응에서 Pt/CeO2 촉매의 지지체구조에 따른 촉매활성 연구 / 한국수소및신에너지학회논문집 25(6):577~585

C. Rhodes / 1995 / Water-gas shift reaction : finding the mechanistic boundary / Catalysis Today 23(1):43~58

변창기 / 2015 / Ce 첨가에 따른 저온수성가스전이반응용 Cu/Zn 촉매의 활성 연구 / 청정기술 21(3):200~206

R. J. Smith / 2010 / A Review of the Water Gas Shift Reaction Kinetics / International Journal of Chemical Reactor Engineering 8

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