Abstract
Silver-cerium composite oxide was active for low temperature oxidative decomposition of formaldehyde. Its high activity was due partly to the high dispersion of active silver on the CeO2. The surface oxygen of this composite catalyst was removed more easily than those on single component Ag2O or CeC2, which also seemed to contribute to the high activity of this catalyst. IR analysis revealed that formaldehyde was decomposed both on silver-cerium composite catalyst and CeO2 in the presence of oxygen to produce methoxide, dioxymethylene, and/or polyoxymethylene even at room temperature. In addition bi-carbonate was formed on silver-cerium composite catalyst and formate was produced on CeO2. These intermediates suffered further oxidation at higher temperatures (373 and 423 K) easily on silver-cerium composite catalyst, whereas degradation of them was rather difficult on CeO2.
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References
P.M. Carey, Determination of a Range of Concern for Mobile Source Emission of Formaldehyde Based only its Toxicological Properties, EPA Technical Report EPA/AA/TSS/83-5, July 1983.
S. Imamura, I. Fukuda and S. Ishida, Ind. Eng. Chem. Res. 27 (1988) 718.
S. Imamura, Y. Uematsu, K. Utani and T. Ito, Ind. Eng. Chem. Res. 30 (1991) 18.
S. Imamura, H. Sawada, K. Uemura and S. Ishida, J. Catal. 109 (1988) 198.
B. Harrison, A.F. Diwell and C. Hallett, Platinum Metals Rev. 32 (1988) 73.
C. Padeste, N.W. Cantand, D.L. Trimm, Catal. Lett. 18 (1993) 305.
A. Cook, A.G. Fitzgerald and J.A. Cairns, in:Catalysis and Surface Characterization 1992, eds. T.J. Dines, C.H. Rochester and J. Thomson (The Royal Society of Chemistry, Cambridge, 1992) p. 249.
S. Imamura, M. Nakamura, N. Kawabata, J. Yoshida and S. Ishida, Ind. Eng. Chem. Prod. Res. Dev. 25 (1986) 34.
S. Imamura and M. Ando, Ind. Eng. Chem. Res. 28 (1989) 1452.
F. Le Normand, L. Hilaire, K. Kili, G. Krill and G. Maire, J. Phys. Chem. 92 (1988) 2561.
G. Busca, J. Lamotte, J.C. Lavalley and V. Lorenzelli, J. Am. Chem. Soc. 109 (1987) 5197.
R. Philipp and K. Fujimoto, J. Phys. Chem. 96 (1992) 9035.
J.V. Evans and T.L. Whateley, Trans. Faraday Soc. 63 (1967) 2769.
L.H. Little and C.H. Amberg, Can. J. Chem. 40 (1962) 1997.
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Imamura, S., Uchihori, D., Utani, K. et al. Oxidative decomposition of formaldehyde on silver-cerium composite oxide catalyst. Catal Lett 24, 377–384 (1994). https://doi.org/10.1007/BF00811810
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DOI: https://doi.org/10.1007/BF00811810