AN INVESTIGATION ON STRUCTURAL STABILITY AND OXYGEN PERMEATION PROPERTIES OF DENSE MEMBRANE PEROVSKITE BA0.5SR0.5CO0.8FE0.2O3-δ

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GANJI BABAKHANI E.; TOWFIGHI J.; AHMADI R.

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Journal: PETROLEUM RESEARCH Year:2010 | Volume:20 | Issue:61 Page(s): 29-38

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Title

AN INVESTIGATION ON STRUCTURAL STABILITY AND OXYGEN PERMEATION PROPERTIES OF DENSE MEMBRANE PEROVSKITE BA0.5SR0.5CO0.8FE0.2O3-δ

Author(s)

GANJI BABAKHANI E. | TOWFIGHI J. | AHMADI R. | Issue Writer Certificate

Keywords

MEMBRANEQ2

PERMEATIONQ3

PEROVSKITEQ2

STABILITYQ1

Abstract

In this study, PEROVSKITE Ba0.5Sr0.5Co0.8Fe0.2O3-d and SrCo0.8Fe0.2O3-d were synthesized by EDTA and citrate complexing methods. The microstructural studies were carried out using X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) to investigate the crystal structure and also structural STABILITY. Oxygen PERMEATION through BSCF and SCF MEMBRANEs were measured at elevated temperatures (700oC to 950oC). XRD re-suits showed that both specimens possess PEROVSKITE and cubic structure. A relatively high PERMEATION value (2 cc/min.cm2 at 950oC) were reported for both specimens. The results indicated that oxygen PERMEATION of BSCF is higher than that of SCF through a wide range of temperature. Also, the effect of upstream partial pressure of oxygen (0-1 atm) on oxygen flux was studied at various temperatures. The increase in oxygen partial pressure significantly increases the oxygen flux which suggests that these MEMBRANEs may be used for industrial application. Activation energy results revealed that PERMEATION of SCF MEMBRANE at low temperatures is more sensitive to temperature than BSCF which is contrary to observations at high temperatures. It was concluded that Oxygen PERMEATION flux is controlled by both surface exchange kinetics and bulk diffusion. XRD patterns after (adsorption-desorption treatment) indicated that BSCF has a more stable structure at high-temperatures than SCF and also possesses lower oxygen partial pressures.

Cites

INVESTIGATION ON THE PERFORMANCE OF PEROVSKITE-TYPE CERAMIC MEMBRANE REACTOR FOR PARTIAL OXIDATION OF METHANE TO SYNGAS

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APA: Copy

GANJI BABAKHANI, E., TOWFIGHI, J., & AHMADI, R.. (2010). AN INVESTIGATION ON STRUCTURAL STABILITY AND OXYGEN PERMEATION PROPERTIES OF DENSE MEMBRANE PEROVSKITE BA_0.5SR_0.5CO_0.8FE_0.2O_3-δ. PETROLEUM RESEARCH, 20(61), 29-38. SID. https://sid.ir/paper/114779/en

Vancouver: Copy

GANJI BABAKHANI E., TOWFIGHI J., AHMADI R.. AN INVESTIGATION ON STRUCTURAL STABILITY AND OXYGEN PERMEATION PROPERTIES OF DENSE MEMBRANE PEROVSKITE BA_0.5SR_0.5CO_0.8FE_0.2O_3-δ. PETROLEUM RESEARCH[Internet]. 2010;20(61):29-38. Available from: https://sid.ir/paper/114779/en

IEEE: Copy

E. GANJI BABAKHANI, J. TOWFIGHI, and R. AHMADI, “AN INVESTIGATION ON STRUCTURAL STABILITY AND OXYGEN PERMEATION PROPERTIES OF DENSE MEMBRANE PEROVSKITE BA_0.5SR_0.5CO_0.8FE_0.2O_3-δ,” PETROLEUM RESEARCH, vol. 20, no. 61, pp. 29–38, 2010, [Online]. Available: https://sid.ir/paper/114779/en

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