Cu-Co Composite Oxides Supported on Multi-walled Carbon Nanotubes for Catalytic Removal of CO in a H2-rich Stream
- Received Date: 2014-05-16
Abstract: Multi-walled carbon nanotubes (MWCNT) supported Cu-Co composite oxides catalysts were prepared by an ultrasonication treatment-aided impregnation method. The structure prop-erties 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 ob-served for Cu-Co composite catalysts, which features an unusual reaction pathway through the combination of CO preferential oxidation and CO methanation especially at high reac-tion 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 oC under the space velocity as high as 120 L/(h·g), which demonstrates a promising catalyst for the e ective CO removal in a H2-rich stream.
|Citation:||Ning Liu, Yu-xian Gao, Wen-dong Wang, Wei-xin Huang. Cu-Co Composite Oxides Supported on Multi-walled Carbon Nanotubes for Catalytic Removal of CO in a H2-rich Stream[J]. Chinese Journal of Chemical Physics , 2014, 27(5): 523-529. doi: 10.1063/1674-0068/27/05/523-529|