AMPC  Vol.3 No.2 , June 2013
Elucidation of Active Species over Ru/MnO Catalyst on Co2/H2 Methanation Reaction
Abstract: The information regarding phase changes and structure transformation, particle sizes as well as active species of the catalyst are briefly discussed towards alumina supported Ru/MnO catalysts according to their various parameters of calcination temperatures and Mn loading. The Ru/Mn-75/Al2O3 catalysts calcined at 400°C, 700°C, 900°C, 1000°C and 1100°C, Ru/Mn-65/Al2O3 and Ru/Mn-85/Al2O3 catalyst calcined at 1000°C were synthesized by the wetness impregnation method. All the prepared catalysts exhibited crystallite size in the range of 95 nm to 114 nm. It was found that the catalyst with Ru/Mn-75/Al2O3 calcined at 1000°C showed the highest 60.21% CO2 conversion with 57.84% formation of CH4 at the reaction temperature 200°C. The expected active species that assist the CO2 methanation activity over this catalyst was Mn3O4.
Cite this paper: W. Abu Bakar, S. Toemen, R. Ali and H. Abd Rahim, "Elucidation of Active Species over Ru/MnO Catalyst on Co2/H2 Methanation Reaction," Advances in Materials Physics and Chemistry, Vol. 3 No. 2, 2013, pp. 161-167. doi: 10.4236/ampc.2013.32022.

[1]   W. A. W. Abu Bakar and R. S. Toemen, “Catalytic Methanation Reaction over Supported Nickel-Ruthenium Oxide Base for Purification of Simulated Natural Gas,” Scientia Iranica, Vol. 19, No. 3, 2012, pp. 525-534. doi:10.1016/j.scient.2012.02.004

[2]   W. A. W. A. Bakar, R. Ali and S. Toemen, “Catalytic Methanation Reaction over Supported Nickel-Rhodium Oxide for Purification of Simulated Natural Gas,” Journal of Natural Gas Chemistry, Vol. 20, No. 6, 2011, pp. 585-594. doi:10.1016/S1003-9953(10)60236-8

[3]   W. A. Wan Abu Bakar, M. Y. Othman, R. Ali, C. K. Yong and S. Toemen, “The Investigation of Active Sites on Nickel Oxide Based Catalysts towards the in-Situ Reactions of Methanation and Desulfurization,” Modern Applied Science, Vol. 3, No. 2, 2009, pp. 36-44.

[4]   M. B. Kizling and F. Regali, “Preparation of Zirconium Oxide Particles for Catalyst Supports by the Microemulsion Technique. Characterization by X-Ray Diffraction, BET, SEM-EDX, FT-IR and Catalytic Tests,” Studies in Surface Science and Catalysis, Vol. 118, 1998, pp. 495504. doi:10.1016/S0167-2991(98)80216-4

[5]   D. A. Skoog, E. J. Holler and S. R. Crouch, “Principles of Instrumental Analysis,” Thomson Brooks/Cole Corporation, Belmont, 2007.

[6]   M. D. Nasr-Allah, “Physicochemical, Surface, and Catalytic Properties of Pure and Ceria-Doped Manganese/ Alumina Catalysts,” Chinese Journal of Catalysis, Vol. 29, No. 8, 2008, pp. 687-695. doi:10.1016/S1872-2067(08)60066-2

[7]   G. Perego, “Characterization of Heterogeneous Catalysts by X-Ray Diffraction Techniques,” Catalysis Today, Vol. 41, No. 1-3, 1998, pp. 251-259. doi:10.1016/S0920-5861(98)00054-6

[8]   Q. Tang, X. Huang, C. Wu, P. Zhao, Y. Chen and Y. Yang, “Structure and Catalytic Properties of K-Doped Manganese Oxide Supported on Alumina,” Journal of Molecular Catalysis A: Chemical, Vol. 306, No. 1-2, 2009, pp. 48-53. doi:10.1016/j.molcata.2009.02.020

[9]   Q. Tang, X. Gong, C. Wu, Y. Chen, A. Borgna and Y. Yang, “Insights into the Nature of Alumina-Supported MnOOH and Its Catalytic Performance in the Aerobic Oxidation of Benzyl Alcohol,” Catalysis Communications, Vol. 10, No. 7, 2009, pp. 1122-1126. doi:10.1016/j.catcom.2009.01.011

[10]   J. T. Richardson, M. Garrait and J.-K. Hung, “Carbon Dioxide Reforming with Rh and Pt-Re Catalysts Dispersed on Ceramic Foam Supports,” Applied Catalysis A: General, Vol. 255, No. 1, 2003, pp. 69-82. doi:10.1016/S0926-860X(03)00645-8

[11]   C. Jones, K. J. Cole, S. H. Taylor, M. J. Crudace and G. J. Hutchings, “Copper Manganese Oxide Catalysts for Ambient Temperature Carbon Monoxide Oxidation: Effect of Calcination on Activity,” Journal of Molecular Catalysis A: Chemical, Vol. 305, No. 1-2, 2009, pp. 121-124. doi:10.1016/j.molcata.2008.10.027