Development of a multi-layered micro-reactor coated with Pt.Co/Al2O3 catalyst for preferential oxidation of CO

Kyung-Yeol Kim; Suk Woo Nam; Jonghee Han; Sung Pil Yoon; Tae-Hoon Lim; Ho-In Lee

Journal of Industrial and Engineering Chemistry, Vol.14, No.6, 853-859, November, 2008

DOI10.1016/j.jiec.2008.05.003 Export Citation

Development of a multi-layered micro-reactor coated with Pt.Co/Al2O3 catalyst for preferential oxidation of CO

Kyung-Yeol Kim, Suk Woo Nam¹, Jonghee Han¹, Sung Pil Yoon¹, Tae-Hoon Lim¹, and Ho-In Lee^†

School of Chemical and Biological Engineering & Research Center for Energy Conversion and Storage, Seoul National University, Seoul 151-744, Republic of Korea
¹Center for Fuel Cell Research, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea

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Pt-Co/Al2O3 catalysts were prepared with different Co/Pt weight ratios (0.3-1.8) and their performances for preferential oxidation of CO (PROX) were tested. The activity of the catalyst increased with Co/Pt weight ratio due to the increase of the area of active phase by interaction between Pt and Co species. The 13-layered micro-channel reactor was prepared by stacking the plates coated with Pt-Co/Al2O3 catalyst. The reactor was divided into three parts (inlet, middle, and outlet) to evaluate the performance of each part. Most of O2 supplied was depleted at the inlet part and the temperature gradient of the reactor occurred due to the high exothermicity of oxidations of CO and hydrogen. In order to prevent hot spot and temperature gradient, the reactor with non-uniform distribution of the catalyst (partially coating the catalyst on the channels) was prepared. The prepared reactor showed uniform temperature distribution and exhibited excellent performance for PROX.

Keywords:Preferential oxidation;Pt.Co/Al2O3;Micro-reactor;Fuel processor

[References]

Cacciola G, Antonucci V, Freni S, J. Power Sources, 100(1-2), 67 (2001)
Kim JH, Kim HJ, Lim TH, Lee HI, J. Ind. Eng. Chem., 13(5), 850 (2007)
Lemons RA, J. Power Sources, 29, 251 (1990)
Kwon OJ, Hwang SM, Chae JH, Kang MS, Kim JJ, J. Power Sources, 165(1), 342 (2007)
de Wild PJ, Verhaak MJFM, Catal. Today, 60(1-2), 3 (2000)
Holladay JD, Jones EO, Phelps M, Hu JL, J. Power Sources, 108(1-2), 21 (2002)
Shin WS, Jung CR, Han J, Nam SW, Lim TH, Hong SA, Lee HI, J. Ind. Eng. Chem., 10(2), 302 (2004)
Jung CR, Han J, Nam SW, Lim TH, Hong SA, Lee HI, Catal. Today, 93-95, 183 (2004)
Jung CR, Kundu A, Nam SW, Lee HI, Appl. Catal. A: Gen., 331, 112 (2007)
Igarashi H, Uchida H, Suzuki M, Sasaki Y, Watanabe M, Appl. Catal. A: Gen., 159(1-2), 159 (1997)
Korotkikh O, Farrauto R, Catal. Today, 62(2-3), 249 (2000)
Oh SH, Sinkevitch RM, J. Catal., 142, 254 (1993)
Kahlich MJ, Gasteiger HA, Behm RJ, J. Catal., 171(1), 93 (1997)
Suh DJ, Kwak C, Kim JH, Kwon SM, Park TJ, J. Power Sources, 142(1-2), 70 (2005)
Kotobuki M, Watanabe A, Uchida H, Yamashita H, Watanabe M, J. Catal., 236(2), 262 (2005)
Liu XS, Korotkikh O, Farrauto R, Appl. Catal. A: Gen., 226(1-2), 293 (2002)
Srinivas S, Dhingra A, Im H, Gulari E, Appl. Catal. A: Gen., 274(1-2), 285 (2004)
Ouyang X, Besser RS, Catal. Today, 84(1-2), 33 (2003)
Jensen KF, Chem. Eng. Sci., 56(2), 293 (2001)
Kim KY, Han J, Nam SW, Lim TH, Lee HI, Catal. Today, 131, 431 (2008)
Zhou S, Yuan Z, Wang S, Int. J. Hydrogen Energy, 31, 924 (2006)
Wang WJ, Chen YW, Appl. Catal., 77, 223 (1991)
Arnoldy P, Moulijn JA, J. Catal., 93, 38 (1985)
Wang HY, Ruckenstein E, Catal. Lett., 75(1-2), 13 (2001)
Ji L, Lin J, Zeng HC, J. Phys. Chem. B, 104(8), 1783 (2000)
Carvalho LS, Reyes P, Pecchi G, Figoli N, Pieck CL, Rangel MDC, Ind. Eng. Chem. Res., 40(23), 5557 (2001)
Choi J, Shin CB, Suh DJ, Catal. Commun., 9, 880 (2008)
Massalski TB, Murray JL, Bennett LH, Baker H, Binary Alloy Phase Diagrams, American Society for Metals, Ohio, 1986, p. 791
Arico AS, Shukla AK, Kim H, Park S, Min M, Antonucci V, Appl. Surf. Sci., 172(1-2), 33 (2001)
Borgna A, Anderson BG, Saib AM, Bluhm H, Havecker M, Knop-Gericke A, Kuiper AET, Tamminga Y, Niemantsverdriet JW, J. Phys. Chem. B, 108(46), 17905 (2004)

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[3] Lemons RA, J. Power Sources, 29, 251 (1990)

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[10] Igarashi H, Uchida H, Suzuki M, Sasaki Y, Watanabe M, Appl. Catal. A: Gen., 159(1-2), 159 (1997)

[11] Korotkikh O, Farrauto R, Catal. Today, 62(2-3), 249 (2000)

[12] Oh SH, Sinkevitch RM, J. Catal., 142, 254 (1993)

[13] Kahlich MJ, Gasteiger HA, Behm RJ, J. Catal., 171(1), 93 (1997)

[14] Suh DJ, Kwak C, Kim JH, Kwon SM, Park TJ, J. Power Sources, 142(1-2), 70 (2005)

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[17] Srinivas S, Dhingra A, Im H, Gulari E, Appl. Catal. A: Gen., 274(1-2), 285 (2004)

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[19] Jensen KF, Chem. Eng. Sci., 56(2), 293 (2001)

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[21] Zhou S, Yuan Z, Wang S, Int. J. Hydrogen Energy, 31, 924 (2006)

[22] Wang WJ, Chen YW, Appl. Catal., 77, 223 (1991)

[23] Arnoldy P, Moulijn JA, J. Catal., 93, 38 (1985)

[24] Wang HY, Ruckenstein E, Catal. Lett., 75(1-2), 13 (2001)

[25] Ji L, Lin J, Zeng HC, J. Phys. Chem. B, 104(8), 1783 (2000)

[26] Carvalho LS, Reyes P, Pecchi G, Figoli N, Pieck CL, Rangel MDC, Ind. Eng. Chem. Res., 40(23), 5557 (2001)

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[28] Massalski TB, Murray JL, Bennett LH, Baker H, Binary Alloy Phase Diagrams, American Society for Metals, Ohio, 1986, p. 791

[29] Arico AS, Shukla AK, Kim H, Park S, Min M, Antonucci V, Appl. Surf. Sci., 172(1-2), 33 (2001)

[30] Borgna A, Anderson BG, Saib AM, Bluhm H, Havecker M, Knop-Gericke A, Kuiper AET, Tamminga Y, Niemantsverdriet JW, J. Phys. Chem. B, 108(46), 17905 (2004)