采用尿素燃烧法制备了Cu-Ce-O催化剂,考察了不经过焙烧处理的催化剂在干、湿两种气氛下催化CO选择氧化消除反应. 结果表明,在燃料电池电极工作温度区间内, Cu-Ce-O催化剂表现出良好的活性和选择性. 在模拟真实气体气氛下,在130 ℃时催化剂上CO的转化率达到99.3%, CO2选择性也高达75%. X射线衍射和扫描电镜表征结果显示,催化剂表面存在着纳米级、高分散的铜物种.
参考文献
| [1] | Martinez-Arias A;Hungria AB;Munuera G;Gamarra D .Preferential oxidation of CO in rich H-2 over CuO/CeO2: Details of selectivity and deactivation under the reactant stream[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2006(3/4):207-216. |
| [2] | Fu Q.;Saltsburg H.;Flytzani-Stephanopoulos M. .Active nonmetallic Au and Pt species on ceria-based water-gas shift catalysts[J].Science,2003(5635):935-938. |
| [3] | Avgouropoulos G;Ioannides T;Papadopoulou Ch;Batista J Hocevar S Matralis H K .[J].Catalysis Today,2002,75(1-4):157. |
| [4] | Zou HB;Dong XF;Lin WM .Selective CO oxidation in hydrogen-rich gas over CuO/CeO2 catalysts[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2006(5):2893-2898. |
| [5] | Avgouropoulos G;Ioannides T;Matralis H .Influence of the preparation method on the performance of CuO-CeO2 catalysts for the selective oxidation of CO[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2005(1/2):87-93. |
| [6] | Avgouropoulos G;Ioannides T;Matralis H K;Batista J Hocevar S .[J].Catalysis Letters,2001,73(01):33. |
| [7] | Marban G;Fuertes AB .Highly active and selective CuOx/CeO2 catalyst prepared by a single-step citrate method for preferential oxidation of carbon monoxide[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2005(1):43-53. |
| [8] | Martinez=Arias A. .Comparative Study on Redox Properties and Catalytic Behavior for CO Oxidation of CuO/CeO_2 and CuO/ZrCeO_4 Catalysts[J].Journal of Catalysis,2000(1):207-216. |
| [9] | Sedmak G;Hocevar S;Levec J .[J].Journal of Catalysis,2003,213(02):135. |
| [10] | 胡涛;杨建;赵军;王丹军 宋焕玲 丑凌军.[J].分子催化,2007 |
| [11] | Jung C R;Han J;Nam S W;Lim T-H Hong S-A Lee H-I .[J].Catalysis Today,2004,93-95:183. |
| [12] | Ratnasamy P;Srinivas D;Satyanarayana C V V;Manikandan P Senthil Kumaran R S Sachin M Shetti V N .[J].Journal of Catalysis,2004,221(02):455. |
| [13] | Papavasiliou J;Avgouropoulos G;Ioannides T .In situ combustion synthesis of structured Cu-Ce-O and Cu-Mn-O catalysts for the production and purification of hydrogen[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2006(3/4):168-174. |
| [14] | Landon P;Ferguson J;Solsona B E;Garcia T Carley A F Herzing A A Kiely C J Golunski S E Hutchings G J.[J].Chemical Communications,2005(27):3385. |
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