Redox Properties and Catalytic Behavior of Praseodymium-Modified (Ce-Zr)O2 Solid Solutions in Three-Way Catalysts
作者： Wendong Wang , Peiyan Lin , Yilu Fu , Gengyu Cao
关键词:
摘要: The three-way catalyst promoters (Ce-Zr)O2, (Pr-Ce-Zr)O2 and (Pr-Zr)O2 were prepared by the sol-gel method. reduction/oxidation behavior of these mixed oxides was compared. It is shown that formation cubic solid solution at high temperature up to 800 °C makes it more reducible, ternary formed in plays an important role reduction process. catalytic performance tests reveal introduction a small amount praseodymium into (Ce-Zr)O2 favors light-off C3H6 NO effectiveness for conversion lean region.
springer.com
sci-hub.se 参考文章(16)
H.S. Gandhi, M. Shelef, The Role of Research in the Development of New Generation Automotive Catalysts Studies in Surface Science and Catalysis. ,vol. 30, pp. 199- 214 ,(1987) , 10.1016/S0167-2991(09)60422-5
E.S. Putna, J.M. Vohs, R.J. Gorte, G.W. Graham, An examination of praseodymia as an oxygen‐storage component in three‐way catalysts Catalysis Letters. ,vol. 54, pp. 17- 21 ,(1998) , 10.1023/A:1019059401500
Serafín Bernal, Ginesa Blanco, Miguel A Cauqui, Gustavo A Cifredo, José M Pintado, José M Rodriguez‐Izquierdo, None, Influence of reduction treatment on the structural and redox behaviour of ceria, La/Ce and Y/Ce mixed oxides Catalysis Letters. ,vol. 53, pp. 51- 57 ,(1998) , 10.1023/A:1019005922456
Yasuhiko Syono, Masahiro Kagawa, Mitsuru Hasegawa, Yoshikiyo Kato, Effect of additive oxides on ultrafine CeO2 particles synthesized by the spray-ICP technique Journal of Materials Science Letters. ,vol. 15, pp. 1608- 1611 ,(1996) , 10.1007/BF00278104
Kathleen C. Taylor, Nitric oxide catalysis in automotive exhaust systems Catalysis Reviews-science and Engineering. ,vol. 35, pp. 457- 481 ,(1993) , 10.1080/01614949308013915
A. K. Bhattacharya, A. Hartridge, K. K. Mallick, J. L. Woodhead, Low-temperature synthesis and characterization of ceria-based oxide ion conductors Journal of Materials Science. ,vol. 31, pp. 5005- 5007 ,(1996) , 10.1007/BF00355898
P. Fornasiero, G. Balducci, R. Di Monte, J. Kašpar, V. Sergo, G. Gubitosa, A. Ferrero, M. Graziani, Modification of the Redox Behaviour of CeO2Induced by Structural Doping with ZrO2 Journal of Catalysis. ,vol. 164, pp. 173- 183 ,(1996) , 10.1006/JCAT.1996.0373
J.G. Nunan, M.J. Cohn, J.T. Dormer, Effect of high temperature lean aging on the performance of Pt, Rh/CeO2 and rare earth/alkaline earth doped Pt, Rh/CeO2 catalysts Catalysis Today. ,vol. 14, pp. 277- 291 ,(1992) , 10.1016/0920-5861(92)80029-M
Alessandro Trovarelli, Francesca Zamar, Jordi Llorca, Carla de Leitenburg, Giuliano Dolcetti, Janos T. Kiss, Nanophase Fluorite-Structured CeO2–ZrO2Catalysts Prepared by High-Energy Mechanical Milling☆ Journal of Catalysis. ,vol. 169, pp. 490- 502 ,(1997) , 10.1006/JCAT.1997.1705
Gwan Kim, Ceria-promoted three-way catalysts for auto exhaust emission control Industrial & Engineering Chemistry Product Research and Development. ,vol. 21, pp. 267- 274 ,(1982) , 10.1021/I300006A014