| CuO-CeO2的固相反应法制备及其催化CO低温氧化性能 | |
| Low Temperature Oxidation of CO over CuO-CeO2 Catalyst Prepared by Solid-State Chemical Reaction | |
| 摘要: 采用固相化学反应法制备了一系列CuO-CeO2催化剂，并用X-射线衍射(XRD)、程序升温还原(H2-TPR)和氮吸附等技术对样品进行了表征，利用微反-色谱装置考察了其催化CO低温氧化反应的活性，研究了CuO含量和催化剂焙烧温度对CuO-CeO2催化活性的影响。结果表明，随着CuO含量的增加，CuO-CeO2的催化活性提高，至不小于15%时达到稳定；随焙烧温度的升高，CuO-CeO2的催化活性先提高，至650 ℃时达到最大，之后又降低。CuO-CeO2的催化活性与其CuO的还原性之间有较好的对应关系。 | |
| 关键词: 固相化学反应 CuO-CeO2催化剂 CO低温氧化 | |
| 基金项目: | |
| Abstract: A series of CuO-CeO2 catalysts were prepared by solid-state chemical reaction and characterized by X-ray diffraction(XRD), temperature-programmed reduction with hydrogen(H2-TPR) and N2 adsorption-desorption techniques. Their catalytic performances for low temperature oxidation of CO were evaluated by using a microreactor-GC system. The effects of CuO content and catalyst calcination temperature on the performance of the CuO-CeO2 catalysts were investigated. The results show that the catalytic activity of the prepared CuO-CeO2 is increased with CuO content and remains constant when CuO content is not less than 15%. On the other hand, the CO conversion first increases with calcination temperature, and then decreases, with a maximum at 650 ℃. The catalytic activity of CuO-CeO2 for CO oxidation is well correlated with the reducibility of CuO. | |
| Keywords: solid-state chemical reaction CuO-CeO2 catalyst low temperature CO oxidation | |
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| 毛东森,陶丽华,王 倩,郭杨龙,卢冠忠.CuO-CeO2的固相反应法制备及其催化CO低温氧化性能[J].无机化学学报,2010,26(3):447-452. | |
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