用共沉淀法制备出Ce0.6Zr0.35Pr0.05O2纳米固溶体,并利用TG-DTA-DTG、XRD、TEM和H2-TPR等方法对样品的物相结构、晶粒大小、还原性及高温热稳定性进行表征.结果表明,Ce0.6Zr0.35Pr0.05O2纳米固溶体为物相结构稳定的立方相固溶体,该粉体的平均粒度为10 nm左右,分散性好,而且与Ce0.6Zr0.4O2相比,在Ce0.6Zr0.35Pr0.05O2中,Pr的存在明显提高了其还原性和高温热稳定性.
参考文献
| [1] | Kaspar J;Fomasiero P;Graziani M .Use of CeO2-based oxides in the three-way catalysis[J].Catalysis Today,1999,50:285-298. |
| [2] | Alessandro Trovarelli;Marta Boaro;Eliana Rocchini .Some recent developments in the characterization of ceria-based catalysts[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2001(0):584-591. |
| [3] | Colon G;Valdivieso V;Pijolat M et al.[J].Catalysis Today,1999,50:271-284. |
| [4] | H.Vidal;J.Kaspar;M.Pijolat;G.Colon;S.Bernal .Redox behavior of CeO_2-ZrO_2 mixed oxides II.Influence of redox treatment son low surface area catlaysts[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2001(1/2):75-85. |
| [5] | Fally F;Perrichon V;Vidal H et al.[J].Catalysis Today,2000,59:373-386. |
| [6] | Carla E Hori;Haryani Permana et al.[J].Applied Catalysis B:Environmental,1998,16:105-117. |
| [7] | Ozawa M;Matuda K;Suzuki S .[J].Journal of Alloys and Compounds,2000,303-304:56-59. |
| [8] | Thammachart M;Meeyoo V;Risksomboon T et al.[J].Catalysis Today,2001,68:53-61. |
| [9] | Masui T;Ozaki T;Machida K et al.[J].Journal of Alloys and Compounds,2000,303-304:49-55. |
| [10] | Enzo S;Frattini R;Delogo F et al.[J].Nano-Structured Materials,1999,12:673-676. |
| [11] | Kirichenko O A;Gramham G W;Chun W .[J].Studies in surface science and catalysis,1998,118:411-420. |
| [12] | Puunta E S;Vohs J M;Gorte R J et al.[J].Catalysis Letters,1998,54:17-21. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%