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(Ce, Zr)O2 Solid Solutions for Three-Way Catalysts
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Abstract
It has been recently shown that (Ce, Zr)O2 mixed oxides provide improved catalytic performances compared to pure CeO2. Cerium oxide is the active Oxygen Storage Capacity (OSC) component in three way catalysts. However, higher performances, including OSC enhancement, can be achieved with thermally stable solid solutions of Ce and Zr oxides. In the present paper, we describe the structure and the advantages of Ce rich (Ce, Zr)O2 solid solutions and the improved catalytic properties of these materials when used in association with platinum. Various analytical techniques were used including thermo-reduction methods, OSC measurements, surface area measurements, XRD, HRTEM, XPS, and XANES/EXAFS.
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Cuif, J., Blanchard, G., Touret, O., Seigneurin, A. et al., "(Ce, Zr)O2 Solid Solutions for Three-Way Catalysts," SAE Technical Paper 970463, 1997, https://doi.org/10.4271/970463.Also In
References
- Bartley G.J.J Shady P.J. D'Anielio M.J. Chandler J.G.R. Brisley R.J. Webster D.E. Advanced TWC Formulations for High Temperature Applications SAE Paper # 93076 Society of Automotive Engineers 1993
- Gandhi H.S. Piken A.G. Shelef M. Delesh R.G. SAE Paper # 76021 Society of Automotive Engineers 1976
- Fischer G.B. Theis J.R. Casarella M.V. Mahan S.T. The Role of Ceria in Automotive Exhaust Catalysis and OBD-II Catalyst Monitoring SAE paper # 931034 1993
- Diwell A.F. Rajaram R.R. Shaw H.A. Truex T.J. The Role of Ceria in Three Way Catalysts Catal. Automot. Poll. Control II Elsevier Sc. Pub. Amsterdam 1991
- Nunan J.G. Robota H.J. Cohn M. J. Bradley S.A. Physico-Chemical Properties of Ce-Containing Three-Way Catalysts and the Effect of Ce on Catalyst Activity Cat. & Autom. Poll. Control II Elsevier Amsterdam 221 238 1991.
- Yao H.C. Yao Y.F. Ceria in Automotive Exhaust Catalysts J. Catal. 86 254 265 1984
- Murota T. Hasegawa T. Aozasa S. Matsui H. Motoyama M. Production of CeO 2 with High Oxygen Storage Capacity J. Alloys Compounds 193 298 299 1993
- Havil P. Paris 1988
- Schalter J.C. Mitchell P.J. Ind. Eng. Chem. Prod. Res. Dev. 19 288 1980
- Hertz R.K. Sell J.A. J. Catal. 94 166 1985
- Cuif J.P. Blanchard G. Touret O. Marczi M. Quéméré E. New generation of Rare Earth Compounds for Automotive Catalysis SAE paper # 961906 1996
- Pijolat M. Prin M. Soustelle M. Touret O. Nortier P. Thermal Stability of Doped Ceria: Experiment and Modelling Chem. Soc. Faraday Trans. 91 21 3941 3948 1995
- Pijolat M. Prin M. Soustelle M. Touret O. Nortier P. Surface Area Stability of Lanthanum-Doped Ceria Solid State Ionics 63-65 781 785 1993
- Pijolat M. Prin M. Soustelle M. Touret O. Nortier P. Improvement of the Thermal Stability of Ceria Support Catal. Automot. Poll. Control III Elsevier 325 334 1995
- Kubsh J.E. Rieck J.S. Spencer N.D. Cerium Oxide Stabilization: Physical Property and Three- Way Activity Considerations Catal. Automotiv. Poll. Control II Elsevier 125 138 1991
- Ozawa M. Kimura M. Isogai A. The Application of Ce-Zr Oxide Solid Solution to Oxygen Storage Promoters in Automotive Catalysts J. Alloys Comp. 193 73 75 1993
- Harkonen M.A. Aitta E. Lahti A. Luoma M. Maunula T. SAE paper # 910846 1991
- Tanaka H. Yamamoto M. Improvement of Oxygen Storage Capacity SAE paper # 960794 233 240 1996
- Sinev M. Yu Graham G.W. Haack L.P. Shelef M. Kinetic and Structural Studies of Oxygen Availability of the Mixed Oxides Pr 1-x M x O y (M=Ce, Zr) J. Mater. Res. 11 8 1996
- Briois V. Saclay, France 1994
- Shannon R.D. Revised Effective Ionic Radii and Systematic Studies of Interatomic Distances in Halides And Chalcogenides Acta Cryst. A32 751 1976
- Rao G.Ranga Fornasiero P. Di Monte R. Kaspar J. Vlaic G. Balducci G. Meriani S. Gubitosa G. Cremona A. Graziani M. Reduction of NO over Partially Reduced Metal-Loaded CeO 2 -ZrO 2 Solid solutions J. Catal. 162 1 9 1996
- Nunan J.G. Williamson W.B. Robota H.J. Advanced TWC Technologies using CeO 2 -ZrO 2 Solid Solutions SAE paper # 960798 1996
- Logan A.D. Shelef M. J. Mater. Res. 468 1994
- McBride J.R. Hass K.C. Poindexter B.D. Weber W.H. J. Appl. Phys. 76 2435 1994
- Sovestnov A.E. Shaburov V.A. Melekh B.T. Smirnov I.A. Smirnov Yu P. Tyunis A.V. Egorov A.I. Phys. Solid State 36 620 1994