INVESTIGADORES
ESQUIVEL Marcelo Ricardo Oscar
artículos
Título:
Carbochlorination of Cerium Dioxide
Autor/es:
M.R. ESQUIVEL; A. BOHE; D. PASQUEVICH
Revista:
Transactions of the Institution of Minning and Metallurgy: Section C: Mineral Processing and Extractive Metallurgy
Editorial:
Maney Publishing CO
Referencias:
Lugar: Londres-Inglaterra; Año: 2002 vol. 111 p. 149 - 155
Resumen:
The kinetics of the chlorination of a CeO2-C mixture in flowing Ar(g)-Cl2(g) were studied by thermogravimetry between 700 C and 950 C. The effects of the temperature, total gas flow rate, sample mass and carbon content were studied. The carbochlorination and reaction degree obtained at a given reaction time increases with temperature, faster gas flow rate and larger proportion of carbon. The reaction rate was found to be influenced by mass transfer processes. The presence of carbon was crucial for the formation of gaseous intermediaries. The effect of the temperature on the vaporization of condensed products was significant. Solid reactants (CeO2-C) and condensed products (CeCl3) and remaning reactants (C) were identified and characterized by X-ray diffraction, energy dispersive spectroscopy and scanning electron microscopy techniques.
