Abstract
A partial oxidation of methane was carried out using iridium catalysts supported on several metal oxides. The productivity of the synthesis gas from methane was strongly affected by the choice of support oxides for the catalysts. The synthesis gas production proceeded basically via a two-step reaction consisting of methane combustion to give H2O and CO2, followed by the reforming of methane from CO2 and steam. Although the combustion and the reforming of methane from steam did not depend upon the catalyst support, a large variation in the catalytic activity for the reforming of methane from CO2 was observed over Ir catalysts with different supports. The support activity order in the reforming of methane from CO2 with iridium catalysts was as follows: TiO2≧ZrO2≧Y2O3>La2O3>MgO≧Al2O3>SiO2. The same order was observed in the synthesis gas production from the partial oxidation of methane.
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References
M. Prettre, C.H. Eichner and M. Perrin, Trans. Faraday Soc. 43 (1946) 335.
A.T. Ashcroft, A.K. Cheetham, J.S. Foord, M.L. H. Green, C.P. Grey, A. J. Murrell and P. D. F. Vernon, Nature 344 (1990) 319.
S.S. Bharadwaj and L.D. Schmidt, Fuel Process. Tech. 42 (1995) 109.
S.C. Tsang, J.B. Claridge and M.L.H. Green, Catal. Today 23 (1996) 3.
D.A. Hickman and L.D. Schmidt, J. Catal. 138 (1992) 267.
D.A. Hickman, E.A. Haupfear and L.D. Schmidt, Catal. Lett. 17 (1993) 223.
D.A. Hickman and L.D. Schmidt, Science 259 (1993) 343.
J. Nakamura, S. Umeda, K. Kubushiro, K. Kunimori and T. Uchijima, Sekiyu Gakkaishi 36 (1993) 97.
K. Nakagawa, T. Suzuki, T. Kobayashi and M. Haruta, Chem. Lett. (1996) 1029.
K. Nakagawa, N. Ikenaga, T. Suzuki, T. Kobayashi and M. Haruta, Appl. Catal. A, in press.
J.R. Rostrup-Nilsen, in: Catalysis, Science and Technology, Vol. 5, eds. J.R. Anderson and M. Boudart (Springer, Berlin, 1984) pp. 1- 117.
E. Kikuchi, S. Tanaka, Y. Yamazaki and Y. Morita, Bull. Jpn. Petrol. Inst. 16 (1974) 95.
E. Kikuchi, S. Uemiya, A. Koyama, A. Machino and T. Matsuda, Sekiyu Gakkaishi 33 (1990) 152.
J.R. Rostrup-Nielsen and J.H. Bak Hansen, J. Catal. 144 (1993) 38.
J. Nakamura, K. Aikawa, K. Sato and T. Uchijima, Catal. Lett. 25 (1994) 265.
S. Fujimura, K. Nakagawa, N. Ikenaga and T. Suzuki, Sekiyu Gakkaishi 40 (1997) 179.
N. Matsui, N. Ikenaga and T. Suzuki, to be published.
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Nakagawa, K., Anzai, K., Matsui, N. et al. Effect of support on the conversion of methane to synthesis gas over supported iridium catalysts. Catalysis Letters 51, 163–167 (1998). https://doi.org/10.1023/A:1019065824331
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DOI: https://doi.org/10.1023/A:1019065824331