期刊
CATALYSIS LETTERS
卷 142, 期 4, 页码 439-444出版社
SPRINGER
DOI: 10.1007/s10562-012-0786-4
关键词
Pt/Ce0.8Zr0.2O2; Pt/Ce0.2Zr0.8O2; Single stage water gas shift (WGS); Cubic/tetragonal phase
资金
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Korea government Ministry of Knowledge Economy [2011T100200273]
- National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2010-0002521]
- Korea Ministry of Environment (MOE)
- Korea Evaluation Institute of Industrial Technology (KEIT) [20113010100010] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2010-0002521, 핵C6B1608] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A comparative study on nano-sized Pt/Ce0.8Zr0.2O2 and Pt/Ce0.2Zr0.8O2 catalysts in a single stage water gas shift (WGS) reaction was carried out. These catalysts were prepared by impregnating 1 wt% Pt on nano-sized cubic (Ce0.8Zr0.2O2) and tetragonal (Ce0.2Zr0.8O2) supports. Both catalysts have been applied to WGS under identical conditions to understand beneficial effect of cubic/tetragonal phases of Ce(1 - x)Zr(x)O2. 1 wt% Pt/Ce0.8Zr0.2O2 exhibited higher CO conversion than 1 wt% Pt/Ce0.2Zr0.8O2. In addition, 1 wt% Pt/Ce0.8Zr0.2O2 catalyst showed relatively stable activity with time on stream. The high activity/stability of 1 wt% Pt/Ce0.8Zr0.2O2 catalyst was correlated to its higher Pt dispersion and easier reducibility.
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