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Received August 8, 2001
Accepted September 7, 2001
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Water Tolerance of DeNOx SCR Catalysts Using Hydrocarbons: Findings, Improvements and Challenges
Department of Environmental Engineering, Taegu University, 15 Naeri, Jinryang, Kyungsan 712-714, Korea 1Department of Chemical Engineering/School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), P.O. Box 125, Pohang 790-600, Korea
isnam@postech.ac.kr
Korean Journal of Chemical Engineering, September 2001, 18(5), 725-740(16), 10.1007/BF02706393
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Abstract
The recent developments on the effect of H2O on deNOx performance of a variety of SCR catalysts selectively removing NOx by hydrocarbons in excess oxygen have been reviewed. In particular, the water tolerance of the catalyst is summarized to illustrate a common deactivation behavior of SCR catalyst for the reduction of NO by hydrocarbons under wet feed gas mixture. Earlier proposals elucidating the possible cause of the catalyst deactivation under wet conditions are discussed, focusing mainly on the catalyst characteristics. A promising way, which can improve the water tolerance and the hydrothermal stability of zeolite-based SCR catalyst, is also described.
Keywords
References
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Iwamoto M, Yahiro H, Shundo S, Yu-u Y, Mizuno N, Appl. Catal., 69(L), 15 (1991)
Iwamoto M, Yahiro H, Tanda K, Mizuno N, Mine Y, Kagawa S, J. Phys. Chem., 95, 3727 (1991)
Kharas KCC, Robota HJ, Liu DJ, Appl. Catal. B: Environ., 2, 225 (1993)
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Kim MH, Nam IS, Kim YG, Lee JK, Park DK, HWAHAK KONGHAK, 32(3), 402 (1994)
Kim MH, Nam IS, Kim YG, Appl. Catal. B: Environ., 6(4), 297 (1995)
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Kim MH, Nam IS, Kim YG, J. Chem. Soc.-Chem. Commun, 1771 (1998)
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Kim MH, Hwang UC, Nam IS, Kim YG, Catal. Today, 44(1-4), 57 (1998)
Kim MH, Nam IS, Kim YG, Korean J. Chem. Eng., 16(1), 139 (1999)
Kintaichi Y, Hamada H, Tabata M, Sasaki M, Ito T, Catal. Lett., 6, 239 (1990)
Konno M, Chikahisa T, Murayama T, Iwamoto M, "Catalytic Reduction of NOx in Actual Diesel Engine Exhaust," SAE Paper 920091 (1992)
Lee DI, Lee TJ, Ham SW, Nam IS, Oh YS, Baek YS, Theor. Appl. Chem. Eng., 7, 225 (2001)
Li Y, Armor JN, Appl. Catal. B: Environ., 1(L), 31 (1992)
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Li WB, Sirilumpen M, Yang RT, Appl. Catal. B: Environ., 11(3-4), 347 (1997)
Maisuls SE, Seshan K, Feast S, Lercher JA, Appl. Catal. B: Environ., 29(1), 69 (2001)
Masuda K, Shinoda K, Kato T, Tsujimura K, Appl. Catal. B: Environ., 15(1-2), 29 (1998)
Matsumoto H, Tanabe S, J. Phys. Chem., 94, 4207 (1990)
Maunula T, Ahola J, Hamada H, Appl. Catal. B: Environ., 26(3), 173 (2000)
Misono M, Hirao Y, Yokoyama C, Catal. Today, 38(2), 157 (1997)
Miyadera T, Appl. Catal. B: Environ., 2, 199 (1993)
Murakami Y, Hayashi K, Yasuda K, Ito T, Minami T, Miyamoto A, Nippon Kagaku Kaishi, 173 (1977)
Nakayama T, Yasumatsu T, Kokitsu M, Tabata T, Sakane H, Jpn. J. Appl. Phys., 32, 487 (1993)
Ogura M, Hayashi M, Kage S, Matsukata M, Kikuchi E, Appl. Catal. B: Environ., 23(4), 247 (1999)
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Ohtsuka H, Tabata T, Appl. Catal. B: Environ., 21(2), 133 (1999)
Ohtsuka H, Tabata T, Appl. Catal. B: Environ., 26(4), 275 (2000)
Parvulescu VI, Grange P, Delmon B, Catal. Today, 46(4), 233 (1998)
Piffer R, Forster H, Niemann W, Catal. Today, 8, 491 (1991)
Ramallo-Lopez JM, Requejo FG, Gutierrez LB, Miro EE, Appl. Catal. B: Environ., 29(1), 35 (2001)
Sato K, Fujimoto T, Kanai S, Kintaichi Y, Inaba M, Haneda M, Hamada H, Appl. Catal. B: Environ., 13(1), 27 (1997)
Sato S, Hirabayashi H, Yahiro H, Mizuno N, Iwamoto M, Catal. Lett., 12, 193 (1992)
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Shimizu K, Satsuma A, Hattori T, Appl. Catal. B: Environ., 16(4), 319 (1998)
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Tabata T, Kokitsu M, Ohtsuka H, Okada O, Sabatino LM, Bellussi G, Catal. Today, 27(1-2), 91 (1996)
Tabata T, Kokitsu M, Okada O, Catal. Lett., 25(3-4), 393 (1994)
Tabata T, Kokitsu M, Okada O, Catal. Today, 22, 147 (1994)
Tabata T, Kokitsu M, Okada O, Nakayama T, Yasumatsu T, Sakane H, "Deterioration Mechanism of Cu/ZSM-5 as a Catalyst of Selective Reduction of NOx by Hydrocarbons from the Exhaust of Stationary Natural Gas-fueled Engine," Catalyst Deactivation 1994, Delmon,B. and Froment, G.F., eds, Elsevier, Amsterdam (1994)
Tabata T, Ohtsuka H, Okada, Sabatino LMF, Bellussi G, Microporous Mesoporous Mater., 21, 517 (1998)
Tanaka T, Matsumoto S, Muraki H, Kondo S, "Catalyst for Purifying Exhaust Gas," Japan Patent, 1130735 A (1989)
Teraoka Y, Ogawa H, Furukawa H, Kagawa S, Catal. Lett., 12, 361 (1992)
Torikai Y, Yahiro H, Mizuno N, Iwamoto M, Catal. Lett., 9, 91 (1991)
Torreabreu C, Ribeiro MF, Henriques C, Ribeiro FR, Catal. Lett., 43(1-2), 25 (1997)
Torreabreu C, Ribeiro MF, Henriques C, Ribeiro FR, Delahay G, Catal. Lett., 43(1-2), 31 (1997)
Truex TJ, Searles RA, Sun DC, Platinum Metals Rev., 36, 2 (1992)
Uchida H, Yamaseki K, Takahashi I, Catal. Today, 29(1-4), 99 (1996)
Ueda A, Oshima T, Haruta M, Appl. Catal. B: Environ., 12(2-3), 81 (1997)
Wang XD, Zhang T, Sun XY, Guan W, Liang DB, Lin LW, Appl. Catal. B: Environ., 24(3-4), 169 (2000)
Wells AF, "Structural Inorganic Chemistry," 5th edn, Clarendon, Oxford (1984)
Witzel F, Sill GA, Hall WK, J. Catal., 149(1), 229 (1994)
Yogo K, Ihara M, Terasaki I, Kikuchi E, Catal. Lett., 17, 303 (1993)
Yogo K, Ihara M, Umeno M, Terasaki I, Watanabe H, Kikuchi E, Shokubai, 35, 126 (1993)
Yogo K, Umeno M, Watanabe H, Kikuchi E, Catal. Lett., 19(2), 131 (1993)
Zhang XK, Walters AB, Vannice MA, J. Catal., 146(2), 568 (1994)
