Modeling of dense ceramic bilayer membranes

Literature Information

Publication Date 2004-11-29
DOI 10.1039/B405436A
Impact Factor 3.676
Authors

Michael Schroeder


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Abstract

A numerical analysis of the transport properties and the chemical stability of bilayer membranes with the compositions La0.9Sr0.1FeO3/Ce0.8Gd0.2O2 and La1−xSrxCoO3/Ce0.8Gd0.2O2 was carried out. For each membrane layer, the oxygen permeation flux was derived as a function of the defect concentrations and defect mobilities. The defect concentrations were calculated from point defect models. Coupling of the flux equations via the continuity condition yields the overall permeation flux of the bilayer membrane and the oxygen chemical activity at the layer interface, which serves as a criterion for the stability of the membrane under reducing conditions.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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