Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/99420
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dc.creatorJ. P. Lopes
dc.creatorM. A. Alves
dc.creatorM. S. N. Oliveira
dc.creatorS. S. S. Cardoso
dc.creatorA. E. Rodrigues
dc.date.accessioned2022-09-07T18:53:18Z-
dc.date.available2022-09-07T18:53:18Z-
dc.date.issued2013
dc.identifier.issn1385-8947
dc.identifier.othersigarra:106290
dc.identifier.urihttps://hdl.handle.net/10216/99420-
dc.description.abstractOperation of a perfusive catalytic curved membrane is systematized into different transport-reaction regimes. The internal viscous permeation improves the catalyst performance, measured here by the effectiveness factor and by its enhancement relative to purely diffusive conditions. A theoretical analysis is presented for nonlinear kinetic expressions, which are suitable to describe the consumption of a reactant in many (bio)catalytic systems. The kinetic and transport parameters required to attain maximum enhancement are related by simple design rules, which depend on the form of the reaction rate law (namely on the order of reaction and dimensionless inhibition constant). For zero-order reactions, these optimum conditions correspond to attaining negligible concentration at a position inside the membrane, while may be interpreted in general as separating situations of severe mass transfer resistance from cases of high effectiveness. It is important to incorporate the correct form of the kinetic expression in the analysis, so that the predictions can be used in a quantitative manner. The results for the different regimes are compiled in enhancement plots and in Peclet-Thiele diagrams. Moreover, the study also yielded new results for the nonlinear reaction-diffusion problem in a curved membrane with its two surfaces exposed to different concentrations, a case of relevance in membrane reactors.
dc.language.isoeng
dc.rightsrestrictedAccess
dc.subjectCiências da engenharia e tecnologias
dc.subjectEngineering and technology
dc.titleOperation of a perfusive catalytic membrane with nonlinear kinetics
dc.typeArtigo em Revista Científica Internacional
dc.contributor.uportoFaculdade de Engenharia
dc.identifier.doi10.1016/j.cej.2013.07.074
dc.identifier.authenticusP-008-DAE
dc.subject.fosCiências da engenharia e tecnologias
dc.subject.fosEngineering and technology
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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