采用共沉淀技术制备了Ce0.6Zr0.4O2固溶体,并对其进行了XRD、Raman光谱和SEM表征.将其用于单钯三效催化剂的制备,考察了Ce06Zr0.4O2对三效催化剂性能的影响.结果表明:Ce0.6Zr0.4O2具有和CeO2相似的立方结构,并具有较高的热稳定性;与含CeO2的三效催化剂相比,含Ce06Zr0.4O2的三效催化剂经高温老化后,仍具有较高的HC、CO、NO转化率和较低的起燃温度.
参考文献
| [1] | M.Shelef;R.W.McCabe .Twenty-five years after introduction of automotive catalysts:what next?[J].Catalysis Today,2000(1):35-50. |
| [2] | KasparJ;FORNASIERO P;GRAZIANI M .Use of CeO2-based oxides in the three-way catalysis[J].Catalysis Today,1999,50:285-298. |
| [3] | TrovarelliA .Structure and oxygen storage/release properties of CeO2-based solid solutions[J].Comments on Inorganic Chemistry,1999,20(4-6):263-284. |
| [4] | 胡玉才,冯长根,王丽琼,王大祥,张兴燕,李云.新一代三效催化剂的关键材料-CexZr1-xO2固溶体研究进展[J].环境科学与技术,2002(04):42-44,47. |
| [5] | FALLYF;PERRICHON V;VIDAL H et al.Modification of the oxygen storage capacity of CeO2 - ZrO2 mixed oxides after redox cycling aging[J].Catalysis Today,2000,59:373-386. |
| [6] | Juan R. Gonzalez-Velasco;Miguel A. Gutierrez-Ortiz;Jean-Louis Marc;Juan A. Botas;M. Pilar Gonzalez-Marcos;Gilbert Blanchard .Contribution of cerium/zirconium mixed oxides to the activity of anew generation of TWC[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,1999(3):167-178. |
| [7] | 缪建英,蔡俊修.Ce0.5Zr0.5O2固溶体的原位拉曼光谱[J].催化学报,1999(01):25-28. |
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