화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.35, No.3, 645-653, March, 2018
DOI10.1007/s11814-017-0343-3  Export Citation
Low-temperature CO oxidation of Pt/Al0.1Ce0.9Ox catalysts: Effects of supports prepared with different precipitants
Jung-Hyun Park, Hyeryeung Noh1, Tae-Sun Chang, and Chae-Ho Shin1, †
  • Greenhouse Gas Resources Research Group, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea
  • 1Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 28644, Korea
E-mail:
We prepared 0.1Al-0.9Ce supports using various precipitants such as NH4OH, KOH, NaOH, K2CO3, and Na2CO3 to prepare Pt-based CO oxidation catalysts. Of the studied catalysts, the Pt/0.1Al-0.9Ce_NH4OH catalyst showed the optimum activity for CO oxidation. Catalysts prepared with carbonate-form precipitants revealed relatively lower activity than carbonate-free precipitants. A temperature at 50% CO conversion of all samples was observed in the low-temperature region in the presence of water vapor because of the promotional effect of the water-gas shift reaction. Several characterization results revealed that catalytic activity was related to oxygen capacity and Pt dispersion was attributable to precipitant nature.
Keywords:Pt/0.1Al-0.9Ce Catalyst;Precipitants;Anion;Pt Dispersion;Oxygen Vacancy
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