Copper-cerium oxides supported on carbon nanomaterial for preferential oxidation of carbon monoxide

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• 作者：Meiyi GAO ((高美怡)) ; Nan JIANG ((江 楠)) ; Yuhong ZHAO ((赵宇宏)) ; Changjin XU ((徐长进)) ; Haiquan SU ((苏海全)) ; Shanghong ZENG ((曾尚红)) ; ^{shanghongzeng001@163.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：carbon nanomaterial ; copper-cerium oxides ; hydrogen ; CO oxidation ; rare earths
• 刊名：Journal of Rare Earths
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：34
• 期：1
• 页码：55-60
• 全文大小：1014 K

文摘

The Cu_xO-CeO₂/Fe@CNSs, Cu_xO-CeO₂/MWCNTs-Co and Cu_xO-CeO₂/MWCNTs-Ni catalysts were prepared by the impregnation method and characterized by transmission electron microscopy, scanning electron microscopy, X-ray powder diffraction, H₂-temperature programmed reduction and N₂ adsorption-desorption techniques. It was found that the Fe nanoparticles were encapsulated into the multi-layered carbon nanospheres (CNSs). However, the multi-wall carbon nanotubes (MWCNTS) were generated on the Co/Al₂O₃ and Ni/Al₂O₃ precursor. The addition of carbon nanomaterial as supports could improve structural properties and low-temperature activity of the CuO-CeO₂ catalyst, and save the used amount of metal catalysts in the temperature range with high selectivity for CO oxidation. The copper-cerium oxides supported on carbon nanomaterial had good resistence to H₂O and CO₂.