Simultaneous Catalytic Removal of NO and Carbon Particulates Over Perovskite-type Oxides

Jin-sup Yang; Gun-Dae Lee; Byung-Hyun Ahn; Seong-Soo Hong

Journal of Industrial and Engineering Chemistry, Vol.4, No.4, 263-269, December, 1998

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Simultaneous Catalytic Removal of NO and Carbon Particulates Over Perovskite-type Oxides

Jin-sup Yang, Gun-Dae Lee¹, Byung-Hyun Ahn², and Seong-Soo Hong^†

Department of Chemical Engineering, Pukyong National University, Pusan 608-739, Korea
¹Department of Surface & Coating Engineering, Pukyong National University, Pusan 608-739, Korea
²Department of Material Engineering, Pukyong National University, Pusan 608-739, Korea

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We have studied the simultaneous removal of carbon particulate and NOx over perovskite-type oxides prepared by malic acid method. The catalysts were modified to enhance the activity by substitution of metal into A- or B- site of perovskite oxide. In the LaCoO₃ catalyst, the partial substitution of Cs into A-site enhanced the catalytic activity in the combustion of soot particulate and NO reduction. In the Cs-substituted oxide, the ignition temperature of carbon particulate slightly decreased in the order Co > Mn> Fe of B-site metal cation but NO conversion showed almost similar values. With increasing NO concentration, NO conversion decreased but the ignition temperature moved to high temperature when the NO concentration was higher than 1000 ppm. The carbon particulate played an important role on the reduction of NO, but NO had little effect on the oxidation of carbon particulate

Keywords:Carbon Particulate;NOχ;Perovskite Oxide

[References]

Heller, Chem. Week, 22 (1991)
Miyamoto N, Hou Z, Ogawa H, SAE Paper 881224 (1988)
Niura Y, Ohkubo K, Yagi K, SAE Paper 860290 (1986)
Yamashita H, Yamada H, Tomita A, Appl. Catal., 78, L1 (1991)
Kakuta N, Sumiya S, Yoshida K, Catal. Lett., 11, 71 (1991)
Okuhara T, Tanaka K, Shokubai, 20, 56 (1982)
Yoshida K, Makino S, Sumiya S, Muramatsu G, Helferich R, SAE Paper 892046 (1989)
Hong SS, Lee GD, Park JW, Park DW, Cho KM, Oh KJ, Korean J. Chem. Eng., 14(6), 491 (1997)
Hong SS, Park JW, Jung DY, Park DW, Cho KM, Oh KW, J. Korean Air Poll. Res., 14, 25 (1998)
Hong SS, Park JW, Jung DY, Park DW, Cho KM, Oh KW, J. Korean Ind. Eng. Chem., in press
Libby WF, Science, 171, 499 (1971)
Neeft JP, Makkee M, Moulijn JA, Appl. Catal. B: Environ., 8(1), 57 (1996)
Anderson DJ, Sale FR, Powder Metall., 2L, 14 (1979)
Teraoka Y, Nakano K, Shangguan W, Kagawa S, Catal. Today, 27(1-2), 107 (1996)
Cook RL, Sammuells AF, Solid State Chem., 14, 395 (1975)
Shangguan WF, Teraoka Y, Kagawa S, Appl. Catal. B: Environ., 12(2-3), 237 (1997)
Chu X, Schmidt LD, Ind. Eng. Chem. Res., 32, 1359 (1993)
Yamazoe N, Teraoka Y, Catal. Today, 8, 175 (1990)

[Referenced By]

[Related Articles]

[1] Heller, Chem. Week, 22 (1991)

[2] Miyamoto N, Hou Z, Ogawa H, SAE Paper 881224 (1988)

[3] Niura Y, Ohkubo K, Yagi K, SAE Paper 860290 (1986)

[4] Yamashita H, Yamada H, Tomita A, Appl. Catal., 78, L1 (1991)

[5] Kakuta N, Sumiya S, Yoshida K, Catal. Lett., 11, 71 (1991)

[6] Okuhara T, Tanaka K, Shokubai, 20, 56 (1982)

[7] Yoshida K, Makino S, Sumiya S, Muramatsu G, Helferich R, SAE Paper 892046 (1989)

[8] Hong SS, Lee GD, Park JW, Park DW, Cho KM, Oh KJ, Korean J. Chem. Eng., 14(6), 491 (1997)

[9] Hong SS, Park JW, Jung DY, Park DW, Cho KM, Oh KW, J. Korean Air Poll. Res., 14, 25 (1998)

[10] Hong SS, Park JW, Jung DY, Park DW, Cho KM, Oh KW, J. Korean Ind. Eng. Chem., in press

[11] Libby WF, Science, 171, 499 (1971)

[12] Neeft JP, Makkee M, Moulijn JA, Appl. Catal. B: Environ., 8(1), 57 (1996)

[13] Anderson DJ, Sale FR, Powder Metall., 2L, 14 (1979)

[14] Teraoka Y, Nakano K, Shangguan W, Kagawa S, Catal. Today, 27(1-2), 107 (1996)

[15] Cook RL, Sammuells AF, Solid State Chem., 14, 395 (1975)

[16] Shangguan WF, Teraoka Y, Kagawa S, Appl. Catal. B: Environ., 12(2-3), 237 (1997)

[17] Chu X, Schmidt LD, Ind. Eng. Chem. Res., 32, 1359 (1993)

[18] Yamazoe N, Teraoka Y, Catal. Today, 8, 175 (1990)