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Korean Journal of Chemical Engineering, Vol.20, No.2, 222-229, 2003
Tackling the Problem of Sulfur Poisoning of Perovskite Catalysts for Natural Gas Combustion
LaMn0.5Mg0.5O3ㆍy MgO and LaCr0.5-xMnxMg0.5O3ㆍy MgO catalysts (x=0-0.25, y=0-17) were prepared, characterized (XRD, BET, SEM-EDS, TEM, FTIR, chemical and atomic absorption analyses), tested for high-temperature methane combustion and aged in presence of SO2 to investigate sulfur effect on catalytic activity. Different roles of manganese and chromium in the perovskite structure have been assessed: (i) manganese improves the activity of catalysts in the fresh state, whereas chromium worsens it; (ii) owing to its basic nature, manganese makes
perovskites more prone to adsorb SO2 and so less resistant to sulfur poisoning, whereas chromium, owing to its acidic nature, has opposite effects; (iii) the partial solubility of chromium oxide in basic media renders Cr-catalyst regeneration by NH3 leaching less effective. MgO promotes catalytic activity of fresh LaCr0.5Mg0.5O3ㆍy MgO catalysts and slows down sulfur poisoning of LaMn0.5Mg0.5O3ㆍy MgO and LaCr0.25Mn0.25Mg0.5O3ㆍ17 MgO catalysts only.
[References]
- Arai H, Yamada T, Eguchi K, Seiyama T, Appl. Catal., 26, 265, 1986
- Bensitel M, Waqif M, Saur O, Lavalley JC, J. Phys. Chem., 93, 6581, 1989
- Bertolacini RG, Hirschberg EHM, Modica FJ, U.S. Patent, 4,381,991, Standard Oil, 1991
- Cerri I, Saracco G, Geobaldo F, Specchia V, Ind. Eng. Chem. Res., 39(1), 24, 2000
- Cerri I, Saracco G, Specchia V, Trimis D, Chem. Eng. J., 82(1-3), 73, 2001
- Ciambelli P, Cimino S, De Rossi S, Lisi L, Minelli G, Porta P, Russo G, Appl. Catal. B: Environ., 29(4), 239, 2001
- Collongue B, Garbowski E, Primet M, J. Chem. Soc.-Faraday Trans., 87, 2493, 1991
- Farrauto RJ, Heck RM, Catal. Today, 51(3-4), 351, 1999
- Garten RL, DallaBetta RA, Schlatter JC, "Catalytic Combustion," Handbook of Heterogeneous Catalysis, Ertl, G., Knozinger, H., Weitkamp, J., eds., VCH, Weinheim, 1997
- Klvana D, Kirchnerova J, Gauthier P, Delval J, Chaouki J, Can. J. Chem. Eng., 75(3), 509, 1997
- Klvana D, Vaillancourt J, Kirchnerova J, Chaouki J, Appl. Catal. A: Gen., 109(2), 181, 1994
- Pascal P, "Noveau Traite de Chimie Minerale," Masson, Paris, vol. 14, 1959
- Pfefferle LD, Pfefferle WC, Catal. Rev.-Sci. Eng., 26, 219, 1987
- Rosso I, Garrone E, Geobaldo F, Onida B, Saracco G, Specchia V, Appl. Catal. B: Environ., 30(1-2), 61, 2001
- Rosso I, Garrone E, Geobaldo F, Onida B, Saracco G, Specchia V, Appl. Catal. B: Environ., 34(1), 29, 2001
- Saracco G, Geobaldo F, Baldi G, Appl. Catal. B: Environ., 20(4), 277, 1999
- Saracco G, Scibilia G, Iannibello A, Baldi G, Appl. Catal. B: Environ., 8(2), 229, 1996
- Seiyama T, Catal. Rev.-Sci. Eng., 34, 281, 1992
- Trimm DL, Appl. Catal., 7, 249, 1984
- Wan L, "Poisoning of Perovskite Oxides by Sulphur Dioxide," Properties and Applications of Perovskite-Type Oxides, Tejuca L.G., Fierro, J.L.G. (Eds.), Dekker, New York, 1993
- Zwinkels MFM, Jaras SG, GovinMenon P, Catal. Rev.-Sci. Eng., 35, 319, 1993
[Cited By]
- Hunsom M, Dunyushkina L, Adler S, Korean Journal of Chemical Engineering, 23(5), 720, 2006
- Yang X, Park DW, Kim MI, Korean Journal of Chemical Engineering, 24(4), 592, 2007
- Lee SJ, Lee SC, Jung SY, Ryu CK, Kim JC, Korean Journal of Chemical Engineering, 26(5), 1286, 2009
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