Journal ArticleDOI
Effectiveness factors in bidispersed catalysts: the general nth order case
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This article is published in Chemical Engineering Science.The article was published on 1981-01-01. It has received 16 citations till now.read more
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Diffusion and reaction in catalyst pellets with bidisperse pore size distribution
TL;DR: A review of the models proposed in the literature is presented together with a critical analysis of assumptions involved in this paper, where the relative significance of macro-and micropore diffusion resistances on the observed reaction rates with linear and nonlinear rate forms, heat effects, catalyst deactivation and selectivity problems in bidisperse catalysts are investigated in number of published works.
Journal ArticleDOI
Surface barriers as dominant mechanism to transport limitations in hierarchically structured catalysts – Application to the zeolite-catalyzed alkylation of benzene with ethylene
TL;DR: In this article, the meso-macropore network of a hierarchically structured zeolite catalyst is numerically optimized to maximize the volume-integrated reaction yield in the ethylation of benzene to produce ethylbenzene over ZSM-5.
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Adsorption Kinetics of Toluene on Soil Agglomerates: Soil as a Biporous Sorbent
TL;DR: In this article, the equilibrium and kinetic data for adsorption of toluene vapor on Yolo loam and montmorillonite clay were obtained with a gravimetric method.
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Catalytic reactions and reactors: A surface science approach
TL;DR: In this paper, the authors consider the effect of surface heterogeneity on the performance of a fixed-bed catalytic reactor and show how these effects can be quite dramatic under certain conditions.
References
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Journal ArticleDOI
Sorption by solids with bidisperse pore structures
TL;DR: In this article, a bidisperse model for transient diffusion in porous systems consisting of small spherical particles is presented, which describes sorption in pelletized particles and in some types of molecular sieves and ion exchange resins.
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Rate parameters from dynamic experiments with single catalyst pellets
Gulsen Dogu,J. M. Smith +1 more
TL;DR: In this paper, the authors derived the rate and equilibrium parameters for adsorption and reaction on a single catalyst pellet to measurable properties of pulse-response experiments, and showed that the results may not be of high accuracy when many parameters are to be evaluated from one set of experimental conditions.
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On the second order reactions in heterogeneous catalysis
TL;DR: Isothermal second order reactions of the type v A → products and A + B → products are investigated in the macro-micro-pore catalyst model in this paper, where the effectiveness factors, calculated by a computer, are reported and related to a generalized Thiele modulus.
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Unsteady mass transfer near fluid-liquid interfaces
TL;DR: In this paper, the authors proposed methods for solving time dependent convective diffusion equations having the form They consist in two types of contraction of Eq. (1) to Equations (9) and (36) are solved by means of similarity transformations.