Department of Chemical and Biological Engineering, Korea University, 1, 5-Ga, Anam-dong, Sungbuk-ku, Seoul 136-701, Republic of Korea.
J Hazard Mater. 2010 Jun 15;178(1-3):917-25. doi: 10.1016/j.jhazmat.2010.02.025. Epub 2010 Feb 16.
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.
进行了各种实验和分析，以制造一种能够在室温下非常有效地氧化一氧化碳的催化剂，并确定影响氧化反应的相关因素。Pt/TiO(2)催化剂可以通过还原来提高低温和室温下 CO 的氧化能力。在傅里叶变换红外（FT-IR）实验中，显示出优异活性的催化剂能够使用大气中的氧气将 CO 高效地氧化为 CO(2)。基于 X 射线光电子能谱（XPS）分析的结果，我们发现还原后的催化剂将铂的氧化值改变为 Pt(+2)和 Pt(+0)。通过 O(2)-再氧化实验，含有非化学计量比氧化铂物种的催化剂表现出优异的吸氧能力。在这项研究中，即使使用少量的铂，Pt/TiO(2)催化剂也能够非常有效地在低温和室温下氧化 CO。
