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Preparation of Mixed Conducting Membrane SrFe_(0.7)Cu_(0.3)O_(3-δ) by Sol-Gel Method

Lin Wei-ming

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Abstract

Mixed conducting membrane SrFe0.7Cu0.3O3-δ were synthesized by sol-gel method . The crystal structures of the material and the properties of sol-gel synthesized in different conditions were studied by TG-DSC and XRD. It is found that the steady, pure cubic perovskite-structure membrane material with well-defined crystal structure can be obtained on condition that pH value of the sol is about 4, dehydrating temperature of gel is at 80 ℃, the proportion of C/Mn+ is 2, and the gel is roasted at 900 ℃ for 5 h.

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What this paper is about

Mixed conducting membrane SrFe0.7Cu0.3O3-δ were synthesized by sol-gel method . The crystal structures of the material and the properties of sol-gel synthesized in different conditions were studied by TG-DSC and XRD. It is found that the steady, pure cubic perovskite-structure membrane material with well-defined crystal structure can be obtained on condition that pH value of the sol is about 4, dehydrating temperature of gel is at 80 ℃, the proportion of C/Mn+ is 2, and the gel is roasted at 900 ℃ for 5 h.

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Available abstract

Mixed conducting membrane SrFe0.7Cu0.3O3-δ were synthesized by sol-gel method . The crystal structures of the material and the properties of sol-gel synthesized in different conditions were studied by TG-DSC and XRD. It is found that the steady, pure cubic perovskite-structure membrane material with well-defined crystal structure can be obtained on condition that pH value of the sol is about 4, dehydrating temperature of gel is at 80 ℃, the proportion of C/Mn+ is 2, and the gel is roasted at 900 ℃ for 5 h.

Key concepts: Sol-gel, Materials science, Membrane, Crystal (programming language), Chemical engineering, Crystal structure, Perovskite (structure), Crystallography

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