AMPC  Vol.3 No.3 , July 2013
Crystallographic Properties of the Unsupported Ni-Mo Carbides Phases
Abstract: In the present work, the crystallographic properties of unsupported Ni-Mo catalyst serie were carried out. They were synthesized with a ratio of Mo from 10, 25, 50 to 75 wt%. The final catalysts were characterized by X-ray diffraction (XRD) in order to identify crystallographic phases present in the solids using DRXwinsoftware version 2.3. The crystal size was determinated by Bragg’s law. Ni-Mo catalyst model (MoC-75) structure was modeled by Carine Crystallography Software version 3.1 which was built based on its space group and atomic positions which were previous the results of XRD. Characteristical phases of Ni-Mo Carbides were identified for their typical planes (111), (200) and (311) for Ni-Mo series and the plane (101) for the a Mo-C series.
Cite this paper: A. Torre, J. Banda, U. García, D. Alvarado, M. García and B. Martínez, "Crystallographic Properties of the Unsupported Ni-Mo Carbides Phases," Advances in Materials Physics and Chemistry, Vol. 3 No. 3, 2013, pp. 206-208. doi: 10.4236/ampc.2013.33030.

[1]   J. S. Lee, L. Volpe, F. H. Ribeiro and M. Boudart, “Molybdenum Carbide Catalysts. II. Topotactic Synthesis of Unsupported Powders,” Journal of Catalysis, Vol. 112, No. 1, 1988, pp. 44-53.

[2]   S. Ramanathan and S. T. Oyama, “New Catalysts for Hydroprocessing: Transition Metal Carbides and Nitrides,” The Journal of Physical Chemistry, Vol. 99, No. 44, 1995, pp. 16365-16372. doi:10.1021/j100044a025

[3]   M. Vrinat, M. Breysse, C. Geantet, J. Ramirez and F. Massoth, “Effect of MoS2 Morphology on the HDS Activity of Hydrotreating Catalysts,” Catalysis Letters, Vol. 26, No. 1-2, 1994, pp. 25-35.

[4]   J. S. Lee, T. Oyama and M. Boudart, “Molybdenum Carbide Catalysts: I. Synthesis of Unsupported Powders,” Journal of Catalysis, Vol. 106, No. 1, 1987, pp. 125-133. doi:10.1016/0021-9517(87)90218-1

[5]   L. Volpe and M. Boudart, “Compounds of Molybdenum and Tungsten with High Specific Surface Area: I. Nitrides,” Journal of Solid State Chemistry, Vol. 59, No. 3, 1985, pp. 332-347. doi:10.1016/0022-4596(85)90301-9