DOI QR코드

DOI QR Code

Characterization of Enhanced CO Oxidation Activity by Alumina Supported Platinum Catalyst

  • Jo, Myung-Chan (Department of Advanced Materials Engineering, Dongseo University)
  • Published : 2009.10.30

Abstract

A novel pretreatment technique was applied to the conventional Pt/alumina catalyst to prepare for the highly efficient catalyst for the preferential oxidation of carbon monoxide in hydrogen-rich condition. Their performance was investigated by selective CO oxidation reaction. CO conversion with the oxygen-treated Pt/Alumina catalyst increased remarkably especially at the low temperature below $100^{\circ}C$. This result is promising for the normal operation of the proton exchange membrane fuel cell (PEMFC) without CO poisoning of the anode catalyst. XRD analysis results showed that metallic Pt peaks were not observed for the oxygen-treated catalyst. This implies that well dispersed small Pt particles exist on the catalyst. This result was continued by high resolution transmission electron microscopy (HRTEM) analysis. Consequently, it can be concluded that highly dispersed Pt nanoparticles could be prepared by the novel pretreatment technique and thus, CO conversion could be increased considerably especially at the low temperatures below $100^{\circ}C$.

Keywords

Preferential oxidation of CO;PEMFC;Pt/Alumina catalyst;XRD

References

  1. Son I. H., M. Shamsuzzoha and A. M. Lane, 2002, Promotion of $Pt/{\gamma}-Al_2O_3$by new pretreatment for low-temperature preferential oxidation of CO in $H_2$ for PEM fuel cells, J. Catal., 210, 460-465 https://doi.org/10.1006/jcat.2002.3707
  2. Oh S. H. and R. M. Sinkevitch, 1993, Carbon monoxide removal from hydrogen-rich fuel cell feedstreams by selective catalytic oxidation, J. CataI., 142, 254-262 https://doi.org/10.1006/jcat.1993.1205
  3. Igarashi H., H. Uchida, M. Suzuki, Y. Sasaki and M. Watanabe, 1997, Removal of carbon monoxide from hydrogen-rich fuels by selective oxidation over platinum catalyst supported on zeolite, Appl. Catai. A: Gen., 159, 159-169 https://doi.org/10.1016/S0926-860X(97)00075-6
  4. Suh D. J., C. Kwak, J. H. Kim, S. M. Kwon and T. J. Park, 2005, Removal of carbon monoxide from hydrogen-rich fuels by selective low-temperature oxidation over base metal added platinum catalysts, J. Power Sources, 142, 70-74 https://doi.org/10.1016/j.jpowsour.2004.09.012
  5. Marino F., C. Descorme and D. Duprez, 2004, Noble metal catalysts for the preferential oxidation of carbon monoxide in the presence of hydrogen, Appl. Catal. B: Environ., 54, 59-66 https://doi.org/10.1016/j.apcatb.2004.06.008
  6. Schbert M. M., M. J. Kahlich, H. A. Gasteiger and R. J. Behm, 1999, Correlation between CO surface coverage and selectivity/kinetics for the preferential CO oxidation over $Pt/{\gamma}-Al_2O_3$ and $Au/{\alpha}-Fe_2O_3$: an in-situ DRIFTS study, J. power Sources, 84, 175-182 https://doi.org/10.1016/S0378-7753(99)00314-6
  7. Kahlich M. J., H. A. Gasteiger and R. J. Behm, 1998, Preferential oxidation of CO over $Pt/{\gamma}-Al_2O_3$ and $Au/{\alpha}-Fe_2O_3$: reactor design calculations and experimental results, J. New Mater. Electrochem. Syst., 1, 39-46
  8. Haruta M., S. Tsuboya, T. Kobayashi, H. Kageyama, M. Genet and B. DeImon, 1993, Low-temperature oxidation of CO over gold supported on $TiO_2$, ${\alpha}-Fe_2O_3$ and $CO_3O_4$, J. CataI., 144, 175-192 https://doi.org/10.1006/jcat.1993.1322
  9. Hasegawa Y., K. Kusakabe and S. Morooka, 2001, Selective oxidation of carbon monoxide in hydrogen-rich mixtures by permeation through a platinum-loaded Y-type zeolite membrane, J. Mem. Sci., 190, 1-8 https://doi.org/10.1016/S0376-7388(00)00672-4
  10. Manasilp A. and E. Gulari, 2002, Selective oxidation over Pt/Alumina catalysts for fuel cell applications, Appl. Catal. B: Environ., 37, 17-25 https://doi.org/10.1016/S0926-3373(01)00319-8
  11. Friedrich K. A., F. Henglein, U. Stimming and W. Unkauf, 2000, Size dependence of the CO monolayer oxidation on nanosized Pt particles supported on gold, Electrochemica. Acta., 45, 3283-3293 https://doi.org/10.1016/S0013-4686(00)00430-8
  12. Seker E. and E. Gulari, 2000, Activity and $N_2$ selectivity of sol-gel prepared Pt/Alumina catalysts for selective $NO_x$ reduction, J. CataI., 194, 4-13 https://doi.org/10.1006/jcat.2000.2949
  13. Korotkikh O. and R. Farrauto, 2000, Selective catalytic oxidation of CO in $H_2$: fuel cell applications, Catal. Today, 62, 249-254 https://doi.org/10.1016/S0920-5861(00)00426-0
  14. Kim D. H. and J. E. Cha, 2002, A $CuO-CeO_2$ mixed oxide catalysts for CO clean-up by selective oxidation in hydrogen-rich mixtures, 9th APCChE Congress, 619
  15. Avgouropoulos G., T. loannides, H. K. Matralis, J. Batista and S. Hocever, 2001, $CuO-CeO_2$ mixed oxide catalysts for the selective oxidation of carbon monoxide in excess hydrogen, Catal. Lett., 73, 33-40 https://doi.org/10.1023/A:1009013029842
  16. Haruta M. and M. Date, 2001, Advances in the catalysis of Au nanoparticles, Appl. Catal. A: Gen., 222, 427-437 https://doi.org/10.1016/S0926-860X(01)00847-X