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Two-Dimensional Modeling of Self-Propagating High-Temperature Synthesis of Strontium-Doped Lanthanum Manganate

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A two-dimensional finite element model is developed to study the reaction kinetics and heat transfer during the self-propagating high-temperature synthesis of La0.6Sr0.4MnO3, a cathode and interconnect material used in solid oxide fuel cells. The activation energy of La0.6Sr0.4MnO3 formation was calculated from experimental temperature history. The calculated spatial-temporal temperature profile, heat generation rate, reaction conversion, and flow pattern of surrounding gas during the reaction are reported in this work. Hot spots are found at the corner near the ignition point shortly after the ignition. The model provided a simple and reliable way to design a large-scale production of La0.6Sr0.4MnO3.
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Document Type: Research Article

Affiliations: Lamar University, Chemical Engineering Department, Beaumont, Texas 77710

Publication date: 2010-01-01

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