Oxygen Permeation and Stability of Ce0.8Gd0.2O2−δ–PrBaCo2−xFexO5+δ Dual–phase Composite Membranes

Jiang, Bo; Cheng, Hongwei; Luo, Longfei; Lu, Xionggang; Zhou, Zheng

doi:10.1016/j.jmst.2014.09.001

Cited by 16 publications

(6 citation statements)

References 45 publications

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“…Ba 0.95 La 0.05 Fe 1– x Nb x O 3−δ (BLF 1– x N x ( x = 0, 0.025, 0.05, 0.10, and 0.15)) powders were synthesized by the sol–gel method . According to the stoichiometry, the corresponding amounts of Ba(NO 3 ) 2 , La(NO 3 ) 3 ·6H 2 O, Fe(NO 3 ) 3 ·9H 2 O, and niobium oxalate powders were weighed and dissolved in deionized water.…”

Section: Methodsmentioning

confidence: 99%

Synthesis, Oxygen Permeation, and CO₂-Tolerance Properties of Ce_0.8Gd_0.2O_2−δ–Ba_0.95La_0.05Fe_1–xNb_xO_3−δ Dual-Phase Membranes

Cheng

Zhang

Xiong

et al. 2015

ACS Sustainable Chem. Eng.

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A series of CO 2 -tolerant dual-phase dense oxygen permeable membranes of stoichiometry Ce 0.8 Gd 0.2 O 2−δ − Ba 0.95 La 0.05 Fe 1−x Nb x O 3−δ (CG−BLF 1−x N x , x = 0, 0.025, 0.05, 0.10, and 0.15) were designed and prepared by the sol−gel method. Their stability regarding phase composition and structure, oxygen permeability, and CO 2 -tolerant property were investigated by X-ray diffraction (XRD), thermogravimetry and differential scanning calorimetry (TG-DSC), and temperature-programmed desorption of oxygen (O 2 -TPD). Results of the materials characterization showed excellent chemical compatibility between CG and BLF 1−x N x without the formation of any impurity phase after sintering at 1200°C in air. The oxygen-permeation experiments showed that with increasing niobium content, the oxygen permeability of the CG−BLF 1−x N x membranes decreased slightly, but the compositional and structural stability in CO 2 atmosphere improved significantly. The 60 wt % CG−40 wt % BLF 0.9 N 0.1 membrane showed simultaneously good oxygen permeability and excellent CO 2 tolerance, and the oxygen-permeation flux reached 0.195 mL·cm −2 ·min −1 in pure CO 2 atmosphere at 925°C using a 1.0 mm thick membrane. This work demonstrates that CG−BLF 1−x N x dual-phase membranes have great application potential for separating oxygen from highly concentrated CO 2 atmosphere.

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Section: Methodsmentioning

confidence: 99%

Synthesis, Oxygen Permeation, and CO₂-Tolerance Properties of Ce_0.8Gd_0.2O_2−δ–Ba_0.95La_0.05Fe_1–xNb_xO_3−δ Dual-Phase Membranes

Cheng

Zhang

Xiong

et al. 2015

ACS Sustainable Chem. Eng.

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“…The feed and sweep gas flow rates were controlled at 300 and 100 mL min −1 by mass flow controllers (MFCs), respectively. The concentration of O 2 in the permeated gas was determined with a gas chromatograph (GC9160), which was used to calculate the oxygen permeation flux according to the equation given in the literature …”

Section: Methodsmentioning

confidence: 99%

Effects of B‐site doped elements in the electronic‐conducting perovskite phase on the property of dual‐phase membranes

Cheng

Xiong

Zhao

et al. 2017

Int J Applied Ceramic Tech

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A series of dense oxygen permeable dual‐phase membranes with a composition of 60 wt% Ce0.8Gd0.2O2−δ‐40 wt% Ba0.95La0.05Fe0.9M0.10O3−δ (CGO‐ BLFM0.10, M=Fe, Nb, Zr, Zn, Sc, Y) were successfully synthesized and evaluated as potential ceramic membranes for oxy‐fuel combustion. The effects of B‐site doped elements in electronic‐conducting phase (BLFM0.10) on the crystal structure, microstructure, chemical compatibility, oxygen permeability, as well as chemical stability of CGO‐BLFM0.10 were systematically investigated. All electronic‐conducting phase BLFM0.10 oxides exhibited a pure cubic perovskite structure and showed good chemical compatibility with ionic‐conducting phase CGO. CGO‐BLFSc0.10 showed the best oxygen permeation stability under a pure CO2 atmosphere. CO2‐corrosion on the perovskite phase is the main reason for the property deterioration of fluorite‐perovskite‐typed dual‐phase membrane materials. The stability of dual‐phase membrane materials can be effectively enhanced by reducing the basicity of electronic‐conducting phase of perovskite materials.

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“…The BaCo 0.7 Fe 0.3-x Zr x O 3-G (x = 0.04-0.12) powders were synthesized with a sol-gel method as described in our previous work [7]. The primary powders were calcined at 900 °C for 5 h to obtain the powder with the aforementioned final composition.…”

Section: Methodsmentioning

confidence: 99%

Hydrogen Production by Catalytic Partial Oxidation of Coke Oven Gas in BaCo_0.7Fe_0.3-xZr_xO_3-δCeramic Membrane Reactors

et al. 2016

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Abstract. The BaCo 0.7 Fe 0.3-x Zr x O 3-į (BCFZ, x = 0.04-0.12) mixed ionic-electronic conducting (MIEC) membranes were synthesized with a sol-gel method and evaluated as potential membrane reactor materials for the partial oxidation of coke oven gas (COG). The effect of zirconium content on the phase structure, microstructure and performance of the BCFZ membrane under He or COG atmosphere were systemically investigated. The BaCo 0.7 Fe 0.24 Zr 0.06 O 3-į membrane exhibited the best oxygen permeability and good operation stability, which could be a potential candidate of the membrane materials for hydrogen production through the partial oxidation of COG.

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Oxygen Permeation and Stability of Ce0.8Gd0.2O2−δ–PrBaCo2−xFexO5+δ Dual–phase Composite Membranes

Cited by 16 publications

References 45 publications

Synthesis, Oxygen Permeation, and CO₂-Tolerance Properties of Ce_0.8Gd_0.2O_2−δ–Ba_0.95La_0.05Fe_1–xNb_xO_3−δ Dual-Phase Membranes

Synthesis, Oxygen Permeation, and CO₂-Tolerance Properties of Ce_0.8Gd_0.2O_2−δ–Ba_0.95La_0.05Fe_1–xNb_xO_3−δ Dual-Phase Membranes

Effects of B‐site doped elements in the electronic‐conducting perovskite phase on the property of dual‐phase membranes

Hydrogen Production by Catalytic Partial Oxidation of Coke Oven Gas in BaCo_0.7Fe_0.3-xZr_xO_3-δCeramic Membrane Reactors

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Oxygen Permeation and Stability of Ce0.8Gd0.2O2−δ–PrBaCo2−xFexO5+δ Dual–phase Composite Membranes

Cited by 16 publications

References 45 publications

Synthesis, Oxygen Permeation, and CO2-Tolerance Properties of Ce0.8Gd0.2O2−δ–Ba0.95La0.05Fe1–xNbxO3−δ Dual-Phase Membranes

Synthesis, Oxygen Permeation, and CO2-Tolerance Properties of Ce0.8Gd0.2O2−δ–Ba0.95La0.05Fe1–xNbxO3−δ Dual-Phase Membranes

Effects of B‐site doped elements in the electronic‐conducting perovskite phase on the property of dual‐phase membranes

Hydrogen Production by Catalytic Partial Oxidation of Coke Oven Gas in BaCo0.7Fe0.3-xZrxO3-δCeramic Membrane Reactors

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Synthesis, Oxygen Permeation, and CO₂-Tolerance Properties of Ce_0.8Gd_0.2O_2−δ–Ba_0.95La_0.05Fe_1–xNb_xO_3−δ Dual-Phase Membranes

Synthesis, Oxygen Permeation, and CO₂-Tolerance Properties of Ce_0.8Gd_0.2O_2−δ–Ba_0.95La_0.05Fe_1–xNb_xO_3−δ Dual-Phase Membranes

Hydrogen Production by Catalytic Partial Oxidation of Coke Oven Gas in BaCo_0.7Fe_0.3-xZr_xO_3-δCeramic Membrane Reactors