A study on the characteristics of CO oxidation at room temperature by metallic Pt.
Various experiments and analysis were conducted in order to manufacture a catalyst that could very efficiently oxidize carbon monoxide at room temperature and also to identify the relevant factors influencing the oxidation reaction. Pt/TiO(2) catalyst can increase the oxidizing capability of CO at low temperature and room temperature by reduction. In FT-IR experiments, the catalyst that displayed excellent activity was capable of efficiently oxidizing CO to CO(2) using atmospheric oxygen. Based on the results of XPS analysis, we found that the reduced catalyst changed the platinum's oxidation value to Pt(+2) and Pt(+0). Through the O(2)-reoxidation experiments, the catalyst, which consisted of non-stoichiometric platinum oxidized species, displayed an excellent ability to accept oxygen. In this study, the Pt/TiO(2) catalyst was able to very efficiently oxidize CO at low temperature and room temperature even with a minute quantity of platinum.
Seo
Phil Won
PW
Department of Chemical and Biological Engineering, Korea University, 1, 5-Ga, Anam-dong, Sungbuk-ku, Seoul 136-701, Republic of Korea.
Choi
Hyun Jin
HJ
Hong
Suk In
SI
Hong
Sung Chang
SC
D002248:Carbon Monoxide / Q000737:chemistry* / Q000191:economics; D002384:Catalysis; D005240:Feasibility Studies; D010084:Oxidation-Reduction; D010984:Platinum / Q000737:chemistry* / Q000191:economics; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D014025:Titanium / Q000737:chemistry; D014961:X-Ray Diffraction
C009495:titanium dioxide; D010984:Platinum; D002248:Carbon Monoxide; D014025:Titanium