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A Novel Palladium Catalyst for Use in Vehicle Emissions Control
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Abstract
A ceria stabilised zirconia supported Pd/Zn catalyst (Pd/Zn ratio=1:2) has demonstrated its ability to perform as a three-way catalyst (TWC) and to give conversions of up to 99% of a stoichiometric mixture of carbon monoxide/npropane/nitric oxide/dioxygen in dinitrogen carrier at a WHSV of 44,000 h-1. The catalyst also exhibits excellent thermal stability inoxidising conditions. Characterisation of the catalyst has been performed using XRD, XPS, BET,and DSC. From this it has emerged that the palladium is in a highly dispersed state, closely associated with the zinc phase. In situ kinetic studies have also been conducted under continuous flow conditions.
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Cairns, J., Hourd, A., Scott, S., Thomson, J. et al., "A Novel Palladium Catalyst for Use in Vehicle Emissions Control," SAE Technical Paper 970468, 1997, https://doi.org/10.4271/970468.Also In
References
- Obuchi A. Ogata A. Takahashi H. Oi J. Bamwenda G.R. Mizano K. 2nd Japan-EC Joint Workshop on the Frontiers of Catalytic Science and Technology JECAT '95 Lyon 26-28 April to be published
- McCarty J.G. Catal Today 26 3 4 1995 283 293
- Guo X.C. Madix R.J. Catal Letters 39 1996 1 4
- Burch R. Watling T. Catal Letters 37 1996 51 55
- Platinum Metal Reviews Johnson Matthey 1994-96
- Stepien H.K. Williamson W.B. Ghandi H.S. Paper 800,843 Pub. Amer. Soc. Auto. Eng. 1980
- Engelhard Corporation 30th Sept. 1987
- Gandhi H.S.
- Sekiba T. Kimura S. Yamamoto H. Okoda A. Catal Today 22 1994 113
- Cairn J.A. Hourd A.C. Thomson J. Intl. Pat. AppL PCT/GB96/00239, UK Patent Appl. 9518948.6 and 9502058.2
- Adams C.R. Benesi H.A. Curtis R.M. Meisenheimer R.G. J.Catal. , 11 35 1968
- Dorling T.A. Moss R.L. J.Catal. 17 190 1970
- Klug H.P. Alexander L.E. “X-ray Diffraction Procedures” Widely, N.Y. 1954
- Rachinger W.A. J.Sci. Instrum. , 25 254 1948 7 1992
- Lynch D.T. Wanke S.E. J.Catal. , 88 1984 345
- Jensen K.F. Ray W.H. Chem.Eng.Sci. , 37 1982 1387
- Sales B.C. Turner J.E. Maple M.B. Surface Sci. , 114 1982 381
- van Tol M.F.H. Gielbert A. Nieuwenhuys B.E. Catal. Lett. , 16 29