Abstract
The adsorption of organic nitro compounds such as nitromethane and nitroethane on different supported silver catalysts (Ag/Al2O3, Ag/TiO2, Ag/SiO2) has been studied using infrared spectroscopy. The adsorbed NCO species formation was strongly influenced by the catalyst support and therefore clearly detected on Ag/Al2O3 and Ag/TiO2 catalysts by thermal decomposition of nitromethane and nitroethane at temperatures higher than 150°C. With the Ag/SiO2 catalyst, very little NCO formation was observed at 350°C. On the other hand, the catalyst support was found to affect the N2 formation in the selective reduction of NOx on supported silver catalysts. On the basis of these findings, the role of adsorbed nitromethane, nitroethane and isocyanate species in the selective reduction of NOx is discussed with respect to the catalyst support effect and the catalytic activity.
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References
M. Iwamoto, H. Yahiro, S. Shundo, Y. Tuu and N. Mizuno, Appl. Catal. A69 (1991) L15 and references therein.
H. Hamada, Catal. Today 22 (1994) 21 and references therein.
T. Miyadera, Appl. Catal. B2 (1993) 199.
T. Miyadera and K. Yoshida, Chem. Lett. (1993) 1483.
T. Miyadera, J. Jpn. Inst. Energy 73 (1994) 987 (in Japanese).
Y. Ukisu, S. Sato, G. Muramatsu and K. Yoshida, Catal. Lett. 11 (1991) 177.
Y. Ukisu, S. Sato, A. Abe and K. Yoshida, Appl. Catal. B2 (1993) 147.
Y. Ukisu, T. Miyadera, A. Abe and K. Yoshida, Catal. Lett. 39 (1996) 265.
T. Tanaka, T. Okuhara and M. Misono, Appl. Catal. B4 (1994) L1.
C. Yokoyama and M. Misono, J. Catal. 150 (1994) 9.
H. Yasuda, T. Miyamoto and M. Misono, Prepr. Am. Chem. Soc. Div. Petrol. Chem. 39 (1993) 99.
T. Okuhara, Y. Hasada and M. Misono, Catal. Today 35 (1997) 83.
C. Li, K.A. Bethke, H.H. Kung and M.C. Kung, J. Chem. Soc. Chem. Commun. (1995) 813.
L.J. Lobree, A.W. Aylor, J.A. Reimer and A.T. Bell, J. Catal. 169 (1997) 188.
N.W. Hays, W. Grunert, G.J. Hutchings, R.W. Joyner and E.S. Shpiro, J. Chem. Soc. Chem. Commun. (1994) 531.
F. Poignant, J. Saussey, J.-C. Lavally and G. Mabilon, J. Chem. Soc. Chem. Commun. (1995) 89.
T. Chafik, S. Kameoka, Y. Ukisu and T. Miyadera, J. Mol. Catal. A, in press.
S. Kameoka, T. Chafik, Y. Ukisu and T. Miyadera, Proc. 3rd Int. Conf. on Ecomaterials, Tsukuba (1997) 20.
T.H. Ballinger and J.T. Yates, Jr., Langmuir 7 (1991) 3041.
J.R. Hill, D.S. Moore, S.C. Schmidt and C.B. Storm, J. Phys. Chem. 95 (1991) 3037.
C.L. Levoguer and R.M. Nix, J. Chem. Soc. Faraday Trans. 93 (1997) 1813.
F. Solymosi and T. Bánsági, J. Phys. Chem. 83 (1979) 552.
F. Solymosi, L. Völgyesi and J. Rasko, Z. Phys. Chem. N.F. 120 (1980) 79.
F. Solymosi, L. Völgyesi and J. Sárkány, J. Catal. 54 (1978) 336.
N.W. Cant, A.D. Cowan, A. Doughty, B.S. Haynes and P.F. Nelson, Catal. Lett. 46 (1997) 207.
H. Hong, A. Abe, K. Yoshida, S. Sumiya, Y. Ukisu and T. Miyadera, 71th Annual Meeting of Chem. Soc. Jpn. 3P1 α 16 (1996) (in Japanese).
S. Kameoka, T. Chafik, Y. Ukisu and T. Miyadera, to be published.
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Kameoka, S., Chafik, T., Ukisu, Y. et al. Role of organic nitro compounds in selective reduction of NOx with ethanol over different supported silver catalysts. Catalysis Letters 51, 11–14 (1998). https://doi.org/10.1023/A:1019041118880
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DOI: https://doi.org/10.1023/A:1019041118880