【摘要】 采用超声处理辅助浸渍法制备了多壁碳纳米管负载的Cu-Co复合氧化物催化剂.利用XRD、TEM、H₂-TPR,XPS和Raman光谱等表征了催化剂的结构性质.在CU和Co氧化物以及金属氧化物与碳纳米管载体间存在强相互作用.催化剂在富氢气氛中CO催化消除反应中,与单一Cu或Co催化剂相比,Cu-Co复合氧化物催化剂表现出独特的反应特性,特别是在较高反应温度下可同时结合CO优先氧化和CO甲烷化的反应途径来实现高效CO消除当Cu/Co比为1/8时活性最优,可以实现在150²50℃和高反应空速（120 L/（h·g））富氢气氛中CO的完全消除.更多还原

【Abstract】 Multi-walled carbon nanotubes(MWCNT) supported Cu-Co composite oxides catalysts were prepared by an ultrasonication treatment-aided impregnation method. The structure properties of the catalysts were characterized by XRD, TEM, H2-TPR, XPS and Raman spectra,indicating the strong interactions between Cu and Co mixed oxides as well as between metal oxides and MWCNT support. The catalytic performance of CO removal in a H2-rich stream was examined. In contrast to the single Cu and Co catalyst, the unique performance was observed for Cu-Co composite catalysts, which features an unusual reaction pathway through the combination of CO preferential oxidation and CO methanation especially at high reaction temperature. The optimal catalyst with Cu/Co ratio of 1/8 can achieve the complete CO conversion in a wider temperature range of 150-250℃ under the space velocity as high as 120 L/(h·g), which demonstrates a promising catalyst for the effective CO removal in a H2-rich stream.更多还原