1a Hydrogen and Fuel Cell Research Laboratory, Chemical Engineering Department, University of Kashan, Kashan, Iran
2Hydrogen and Fuel Cell Research Laboratory, Chemical Engineering Department, University of Kashan, Kashan, Iran
The CO preferential oxidation (PrOx) is one of the critical steps in hydrogen production and purification for Polymer Electrolyte Membrane Fuel Cell (PEMFC). This reaction was investigated in the presence of excess hydrogen over Cu/CeO2, Pt/CeO2 and Cu-Pt/CeO2 catalysts. The ceria supports was prepared via precipitation method and Cu-Pt/CeO2 catalyst was synthesized by sequential impregnation on ceria. The catalysts were characterized by XRD. Comparison of ceria supported copper and platinum showed that copper catalysts activity was higher than platinum in PrOx process. Effect of platinum addition on ceria supported copper was investigated and results showed that Pt promoter have positive effect on CO conversion in low temperature (
 W. Y. Yu, W. S. Lee, C. P. Yang, "Low-temperature preferential oxidation of CO in a hydrogen rich stream (PROX) over Au/TiO2: Thermodynamic study and effect of gold-colloid pH adjustment time on catalytic activity," J. Chinese Institute of Chemical Engineers, vol. 38, pp. 151-160, 2007.
 C. S. Polster, H. Nair, C. D. Baertsch, "Study of active sites and mechanism responsible for highly selective CO oxidationin H2 rich atmospheres on a mixed Cu and Ce oxide catalyst," J. Catalysis, vol. 266, pp. 308–319, 2009.
 Dr. P. Ferreira‐Aparicio, M. J. Benito, J. L. Sanz, "New Trends in Reforming Technologies: from Hydrogen Industrial Plants to Multifuel Microreformers," Science and Engineering, vol. 47:4, pp. 491-588, 2007.
 Z. Wu, H. Zhu, Z. Qin, "CO preferential oxidation in H2-rich stream over a CuO/CeO2 catalyst with high H2O and CO2 tolerance," J. Fuel, vol. 104, pp. 41-45, 2013.
 A. Mishra, R. Prasad, "A Review on Preferential Oxidation of Carbon Monoxide in Hydrogen Rich Gases," Chemical Reaction Engineering & Catalysis, vol. 6, pp. 1-14, 2011.
 Ramaswamy, V., Malwadkar, S. and Chilukuri, "Effect of method of preparation on catalytic activity in the preferential oxidation of carbon monoxide," Applied Catalysis B: Environ, vol. 84, pp. 21-29, 2008.
 Liu, Y., Fu, Q. and Stephanopoulos, "Preferential oxidation of CO in H2 over CuO-CeO2 catalysts," Catalyst Today, vol. 93-95, pp. 241-246, 2004.
 H. Yang, C. Wang, B. Li, "Doping effects of Ni–MgO on the structure and performance of carbon nanotube-supported Pt catalysts for preferential oxidation of CO in a H2 stream," J. Applied Catalysis A: General, vol. 402, pp. 168– 175, 2011.
 J.S.L.Fonseca, et al, "Cooperative effect between copper and gold on ceria for CO-PROX reaction," J. Catalyst Today, vol. 180, pp. 34-41, 2012.
 T. S. Mozer, A. Dziuba, T.P. Vieira, "The effect of copper on the selective carbon monoxide oxidation over alumina supported gold catalysts," J. Power Sources, vol. 187, pp. 209–215, 2009.
 E.Moretti, et al., "Preferential CO oxidation (CO-PROX) over CuO-ZnO/TiO2 catalysts," J. Applied Catalysis A: General, vol. 344, pp. 165–174, 2008.
 Q. Zhang, X. Liu, "Manganese-promoted cobalt oxide as efficient and stable non-noble metal catalyst for preferential oxidation of CO in H2 stream," J. Applied Catalysis B: Environmental, vol. 102, pp. 207–214, 2011.
 Z. Zhao, X. Lin, R. Jin, "High catalytic activity in CO PROX reaction of low cobalt-oxide loading catalysts supported on nano-particulate CeO2–ZrO2 oxides," J. Catalysis Communications, vol. 12, pp. 1448–1451, 2011.
 J. Kugai, R. Kitagawa, S. Seino, "γ-Fe2O3-supported Pt-Cu nanoparticles synthesized by radiolytic process for catalytic CO preferential oxidation," J. Applied Catalysis A: General, vol. 406, pp. 43–50, 2011.
 E-Y Ko, E. D. Park, K. W. Seo, "Pt–Ni/γ-Al2O3 catalyst for the preferential CO oxidation in the hydrogen stream," J. Catalysis Letters, vol. 110, pp. 3–4, 2006.
 S J. L. Ayastuy, M. P. Gonzalez-Marcos, M. A. Gutierrez, "Promotion effect of Sn in alumina-supported Pt catalysts for CO-PROX," Catalysis Communications, vol. 12, pp. 895–900, 2011.
 H. P. Bideberripe, J. M. Ramallo-Lopez, S. J. A. Figuero, "Ge-modified Pt/SiO2 catalysts used in preferential CO oxidation (CO-PROX)," J. Catalysis Communications, vol. 12, pp. 1280–1285, 2011.
 J. Kugai, T. Moriya, S. Seino, "CeO2-supported Pt-Cu alloy nanoparticles synthesized by radiolytic process for highly selective CO oxidation," J. Hydrogen Energy, vol. 37, pp. 4787-4797, 2012.