|
Korean Journal of Chemical Engineering, Vol.19, No.5, 742-748, 2002
Partial Oxidation of Methane over Ni/Ce-ZrO2/θ-Al2O3
The catalytic behavior of Ni/Ce-ZrO2/θ-Al2O3 has been investigated in the partial oxidation of methane (POM) toward synthesis gas. The catalyst showed high activity and selectivity due to the heat treatment of the support and the promotional effect of Ce-ZrO2. It is suggested that the support was stabilized through the heat treatment of γ-Al2O3 and the precoating of Ce-ZrO2, on which a protective layer was formed. Moreover, sintering of the catalyst was greatly suppressed for 24 h test. Pulse experiments of CH4, O2 and/or CH4/O2 with a molar ratio of 2 were systematically performed over fresh, partially reduced and well reduced catalyst. Results indicate that CH4 can be partially oxidized to CO and H2 by the reactive oxygen in complex NiOx species existing over the fresh catalyst. It is demonstrated that POM over Ni/Ce-ZrO2/θ-Al2O3 follows the pyrolysis mechanism, and both the carbonaceous materials from CH4 decomposition over metallic nickel and the reactive oxygen species present on NiOx and Ce-ZrO2 are intermediates for POM.
[References]
- Anderson JR, Appl. Catal. A: Gen., 47, 177, 1989
- Armor JN, Appl. Catal. A: Gen., 176(2), 159, 1999
- Au CT, Wang HY, Wan HL, J. Catal., 158(1), 343, 1996
- Boucouvalas Y, Zhang ZL, Verykios XE, Catal. Lett., 40(3-4), 189, 1996
- Buyevskaya OV, Walter K, Wolf D, Baerns M, Catal. Lett., 38(1-2), 81, 1996
- Choudhary VR, Uphade BS, Mamman AS, J. Catal., 172(2), 281, 1997
- Dissanayake D, Rosynek MP, Kharas KCC, Lunsford JH, J. Catal., 132, 117, 1991
- Dong WS, Jun KW, Roh HS, Liu ZW, Park SE, Catal. Lett., 78(1-4), 215, 2002
- Fathi M, Monnet F, Schuurman Y, Holmen A, Mirodatos C, J. Catal., 190(2), 439, 2000
- Heitnes K, Lindberg S, Rokstad OA, Holmen A, Catal. Today, 24(3), 211, 1995
- Hu YH, Ruckenstein E, J. Phys. Chem. B, 102(1), 230, 1998
- Hu YH, Ruckenstein E, J. Phys. Chem. A, 102(51), 10568, 1998
- Hu YH, Ruckenstein E, Ind. Eng. Chem. Res., 37(6), 2333, 1998
- Jin RC, Chen YX, Li WZ, Cui W, Ji YY, Yu CY, Jiang Y, Appl. Catal. A: Gen., 201(1), 71, 2000
- Liu ZW, Jun KW, Roh HS, Park SE, Oh YS, Korean J. Chem. Eng., in press, 2002
- Vanlooij F, Geus JW, J. Catal., 168(2), 154, 1997
- Lu Y, Xue JZ, Yu CC, Liu Y, Shen SK, Appl. Catal. A: Gen., 174(1-2), 121, 1998
- Miao Q, Xiong GX, Sheng SS, Cui W, Xu L, Guo XX, Appl. Catal. A: Gen., 154(1-2), 17, 1997
- Montoya JA, Romero-Pascual E, Gimon C, Del Angel P, Monzon A, Catal. Today, 63(1), 71, 2000
- Nam SW, Yoon SP, Ha HY, Hong SA, Maganyuk AP, Korean J. Chem. Eng., 17(3), 288, 2000
- Roh HS, Dong WS, Jun KW, Park SE, Chem. Lett., 88, 2001
- Roh HS, Jun KW, Dong WS, Park SE, Baek YS, Catal. Lett., 74(1-2), 31, 2001
- Roh HS, Jun KW, Dong WS, Park SE, Joe YI, Chem. Lett., 666, 2001
- Roh HS, "Catalytic Behavior of Supported Nickel Catalysts for Methane Refonning Reactions," Ph.D. Dissertation, Yonsei University, Korea, 2001
- Stagg-Williams SM, Noronha FB, Fendley G, Resasco DE, J. Catal., 194(2), 240, 2000
- Takeguchi T, Furukawa SN, Inoue M, J. Catal., 202(1), 14, 2001
- Tang S, Lin J, Tan KL, Catal. Lett., 51(3-4), 169, 1998
- Tsang SC, Claridge JB, Green ML, Catal. Today, 23(1), 3, 1995
- Tsipouriari VA, Verykios XE, J. Catal., 179(1), 292, 1998
[Cited By]
- Roh HS, Jun KW, Park SE, Journal of Industrial and Engineering Chemistry, 9(3), 261, 2003
- Liu ZW, Roh HS, Jun KW, Journal of Industrial and Engineering Chemistry, 9(3), 267, 2003
- Jun JH, Lee SJ, Lee SH, Lee TJ, Kong SJ, Lim TH, Nam SW, Hong SA, Yoon KJ, Korean Journal of Chemical Engineering, 20(5), 829, 2003
- Kim MH, Lee EK, Jun JH, Han GY, Kong SJ, Lee BK, Lee TJ, Yoon KJ, Korean Journal of Chemical Engineering, 20(5), 835, 2003
- Kim SB, Kim YK, Lim YS, Kim MS, Hahm HS, Korean Journal of Chemical Engineering, 20(6), 1023, 2003
- Liu ZW, Roh HS, Jun KW, Journal of Industrial and Engineering Chemistry, 9(6), 753, 2003
- Roh HS, Liu ZW, Potdar HS, Kim JW, Jun KW, Journal of Industrial and Engineering Chemistry, 9(6), 762, 2003
- Jun JH, Jeong KS, Lee TJ, Kong SJ, Lim TH, Nam SW, Hong SA, Yoon KJ, Korean Journal of Chemical Engineering, 21(1), 140, 2004
- Bak YC, Cho KJ, Korean Chemical Engineering Research, 43(3), 344, 2005
- Kim KH, Lee SY, Nam SW, Lim TH, Hong SA, Yoon KJ, Korean Journal of Chemical Engineering, 23(1), 17, 2006
- Lee SY, Kwak JH, Kim MS, Nam SW, Lim TH, Hong SA, Yoon KJ, Korean Journal of Chemical Engineering, 24(2), 226, 2007
- Lee SS, Hong JH, Ha HJ, Kim BK, Han JD, Korean Chemical Engineering Research, 48(6), 776, 2010
|