폐롭스카이트형 촉매에서 입자상물질의 촉매연소반응

양진섭; 홍성수; 정덕영; 오광중; 조경목; 류봉기; 박대원

Journal of the Korean Industrial and Engineering Chemistry, Vol.9, No.6, 803-810, November, 1998

Export Citation

폐롭스카이트형 촉매에서 입자상물질의 촉매연소반응

Catalytic Combustion of Soot Particulate over Perovskite-Type Oxides

양진섭, 홍성수, 정덕영, 오광중, 조경목, 류봉기, 박대원

초록

능금산법으로 제조된 페롭스카이트 촉매에서 입자상물질의 연소반응에 대하여 연구하였다. 페롭스카이트 산화물의 A 및 B site에 금속이온을 치환시켜 연소반응의 활성을 증가시켰다. 또한 반응온도, 산소의 농도, 공간속도, SO₂ 및 물의 영향에 대하여 조사하였다. SaCoO₃형 촉매의 A site에 알칼리족 금속을 치환시키면 연소개시 온도가 낮아졌고, 알카리족 금속은 Cs>K>Na의 순서로 연소활성을 증가시켰다. 그러나 La_0.6Cs_0.4CoO₃ 촉매에서 B site에 Fe나 Mn을 치환시키더라도 연소개시 온도의 변화가 거의 없었다. 산소의 농도가 증가함에 따라 연소개시 온도는 낮아졌고 이산화탄소의 생성속도는 산소분압의 영향을 별로 받지 않았다. 한편 공간속도의 증가에 따라 연소개시온도가 낮아졌고, 이산화황에 대한 촉매의 비활성화는 일어나지 않았으며, 반응물 중에 첨가된 물에 의해 연소반응이 촉진되었다.

We have studied the catalytic combustion of soot particulate 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 addition, the reaction conditions, such as temperature, O₂ concentration, space velocity have been studied. The effect of SO₂ pretreatment and water introduced into reactants were also examined. In the LaCoO₃ catalyst, the partial substitution of alkali metals into A site enhanced the catalytic activity in the combustion of soot particulate and the activity was shown in the order : Cs>K>Na;In the La_0.6Cs_0.4CoO₃ catalyst, the substitution of Fe or Mn showed no effect on the ignition temperature. The ignition temperature decreased with increasing O₂ concentration and contact time. The introduction of water into reactants feed decreased the ignition temperature and the pretreatment of SO₂ showed no effect on the catalytic activity.

Keywords:Catalytic Combustion;Soot Particulate;Perovskite-type Oxide;La_0.6Cs_0.4CoO₃

[References]

Heller, Chem. Week, Nov., 22 (1991)
Iwamoto M, Appl. Catal., 70, L1 (1991)
Iwamoto M, Appl. Catal., 60, L15 (1991)
Heck RM, Farrauto RJ, "Catalytic Air Pollution Controll," VNR Press (1993)
Beckmann R, Engeler W, Mueller E, SAE 922330
Farrauto RJ, Voss KE, Heck RJ, SAE 932720
Fukano I, Sugawara K, Sasaki K, Hinjou T, SAE 932958
Voss K, Kibe K, Hirt C, Farauto R, SAE 940240
Narusawa K, Hori S, Abe T, SAE 950157
Libby WF, Science, 171, 499 (1971)
Teraoka Y, Nakano K, Shangguan W, Kagawa S, Catal. Today, 27(1-2), 107 (1996)
Hong SS, Lee GD, Park JW, Park DW, Cho KM, Oh KJ, Korean J. Chem. Eng., 14(6), 491 (1997)
McKee DW, Fuel, 62, 170 (1983)
van Doorn J, Varloud J, Perrichon V, Appl. Catal. B: Environ., 1, 117 (1992)
Neeft JP, Makkee M, Moulijn JA, Appl. Catal. B: Environ., 8(1), 57 (1996)
Nakamura T, Misono M, Yoneda Y, Bull. Chem. Soc. Jpn., 55, 394 (1982)
Moon HD, Lee HI, J. Korean Ind. Eng. Chem., 7(3), 554 (1996)
Voorhoeve RJH, Remeika JP, Freeland PE, Matthias BT, Science, 177, 352 (1972)
Voorhoeve RJH, "Advanced Material in Catalysis," pp. 129, Academic Press, New York (1977)
Yamazoe N, Teraoka Y, Catal. Today, 8, 175 (1990)
Ahlstrom AF, Odenbrand CUI, Carbon, 27, 475 (1989)
Ciambelli P, Thermochim. Acta, 162, 83 (1990)
Yamashita H, Yamada H, Tomita A, Helferich R, Energy Fuels, 7, 85 (1993)
Watanabe Y, Miyazaki S, Maruyana T, Saito Y, J. Mater. Sci. Lett., 5, 135 (1986)
Sultanov MY, Al'tshel IS, Makhmudova ZZ, Kinet. Katal., 28, 213 (1987)

[Referenced By]

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

[2] Iwamoto M, Appl. Catal., 70, L1 (1991)

[3] Iwamoto M, Appl. Catal., 60, L15 (1991)

[4] Heck RM, Farrauto RJ, "Catalytic Air Pollution Controll," VNR Press (1993)

[5] Beckmann R, Engeler W, Mueller E, SAE 922330

[6] Farrauto RJ, Voss KE, Heck RJ, SAE 932720

[7] Fukano I, Sugawara K, Sasaki K, Hinjou T, SAE 932958

[8] Voss K, Kibe K, Hirt C, Farauto R, SAE 940240

[9] Narusawa K, Hori S, Abe T, SAE 950157

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

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

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

[13] McKee DW, Fuel, 62, 170 (1983)

[14] van Doorn J, Varloud J, Perrichon V, Appl. Catal. B: Environ., 1, 117 (1992)

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

[16] Nakamura T, Misono M, Yoneda Y, Bull. Chem. Soc. Jpn., 55, 394 (1982)

[17] Moon HD, Lee HI, J. Korean Ind. Eng. Chem., 7(3), 554 (1996)

[18] Voorhoeve RJH, Remeika JP, Freeland PE, Matthias BT, Science, 177, 352 (1972)

[19] Voorhoeve RJH, "Advanced Material in Catalysis," pp. 129, Academic Press, New York (1977)

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

[21] Ahlstrom AF, Odenbrand CUI, Carbon, 27, 475 (1989)

[22] Ciambelli P, Thermochim. Acta, 162, 83 (1990)

[23] Yamashita H, Yamada H, Tomita A, Helferich R, Energy Fuels, 7, 85 (1993)

[24] Watanabe Y, Miyazaki S, Maruyana T, Saito Y, J. Mater. Sci. Lett., 5, 135 (1986)

[25] Sultanov MY, Al'tshel IS, Makhmudova ZZ, Kinet. Katal., 28, 213 (1987)