On the second order reactions in heterogeneous catalysis

Diffusion and Reaction in Catalyst Pellets with Bidisperse Pore Size Distribution

“…On the other hand, for a monodisperse catalyst pellet, the observed activation energy and the observed reaction order are E a /2 and (n + 1)/2, respectively, in the diffusion-control limit. These results are in agreement with the conclusion reached in the early work of Tartarelli et al (1970) for a second-order reaction.…”

“…This approach can be considered as an extension of Thiele's single-pore model for the effectiveness factor. Such a branched micromacropore model was used in the early work of Tartarelli et al (1970) for the analysis of diffusion and reaction in a catalyst containing both micro-and macropores. In a more recent study, a similar model was used by Petersen (1991) for the analysis of adsorption by a sorbent with bidisperse pore structure.…”

Kinetic studies in a batch reactor using ion exchange resin catalysts for oxygenates production: Role of mass transfer mechanisms

“…Turner (1958) proposed a model structure where the solid network is described by the branched micro-macropore model, including macropores for the transport and micropores to provide capacity of adsorption or reaction, which was also used later by Villermaux et al (1987). This model was also applied for the analysis of diffusion and reaction in a catalyst with a bidisperse pore structure (Tartarelli et al, 1970). Recently, the Turner structure of a bidisperse model was adopted to study adsorption, because of its simplicity; the geometry of macro-and micropores and the diffusivities within pores are then well defined (Petersen, 1991;Silva and Rodrigues, 1999).…”

A model for transient diffusion in bidisperse pore structures

“…1c. Because of its simplicity, Turner's model was used extensively to describe the diffusion and reaction or adsorption in bidisperse pores (Mann and Thomson 1987;Petersen 1991;Tartarelli et al 1970). Based on Turner's model, Silva and Rodrigues (Silva and Rodrigues 1999) made an extension of Ruckenstein's work to nonlinear adsorption equilibrium with negligible macropore adsorption.…”