Artículo
Behavior of catalytic pellets at high reaction rates. The effect of edges
Keegan, Sergio Dario
; Mariani, Nestor Javier
; Martinez, Osvaldo Miguel
; Barreto, Guillermo Fernando
![Icon](/themes/CONICETDigital/images/conicet.png)
![Icon](/themes/CONICETDigital/images/conicet.png)
![Icon](/themes/CONICETDigital/images/conicet.png)
![Icon](/themes/CONICETDigital/images/conicet.png)
Fecha de publicación:
01/2006
Editorial:
American Chemical Society
Revista:
Industrial & Engineering Chemical Research
ISSN:
0888-5885
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The diffusion and reaction problem in catalytic pellets of any shape subject to diffusive transport limitations is undertaken in this contribution. Effective reaction rates in three-dimensional (3D) catalysts can be evaluated through a series solution written in terms of powers of (1/Φ) when strong diffusion limitations are present. In a recent paper, Keegan et al. [Chem. Eng. J. 2005, 110, 41] have clearly demonstrated for smooth catalysts that the second-order term [in (1/Φ)2] depends essentially on the shape of the pellet. In this context, the purpose of this paper is to develop expressions of the second-order term for two-dimensional (2D) or 3D catalytic bodies showing edges. While the first-order term allows definition of the proper size of a catalyst, the second-order term provides a characterization for the shape of the catalyst. The possibility of using this characterization of catalyst shape in a geometrical one-dimensional (1D) model to approximate the behavior of given 2D or 3D pellets is analyzed. Also, the direct use of the two-term truncated series for complementing the numerical evaluation of the conservation equation is described.
Palabras clave:
Effective Reaction Rate
,
Catalyst Shape
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CINDECA)
Articulos de CENTRO DE INV EN CS.APLICADAS "DR.JORGE J.RONCO"
Articulos de CENTRO DE INV EN CS.APLICADAS "DR.JORGE J.RONCO"
Citación
Keegan, Sergio Dario; Mariani, Nestor Javier; Martinez, Osvaldo Miguel; Barreto, Guillermo Fernando; Behavior of catalytic pellets at high reaction rates. The effect of edges; American Chemical Society; Industrial & Engineering Chemical Research; 45; 1; 1-2006; 85-97
Compartir
Altmétricas