Enhancement of oxygen permeation fluxes of La0.6Sr0.4CoO3− hollow fiber membrane via macrostructure modification and (La0.5Sr0.5)2CoO4+ decoration

Han, Ning; Meng, Bo; Yang, Naitao; Sunarso, Jaka; Zhu, Zhonghua; Liu, Shaomin

doi:10.1016/j.cherd.2018.04.038

Cited by 30 publications

(9 citation statements)

References 39 publications

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“…Higher sintering temperatures would increase the compactness of the bulk section . This highlights the effect of the macrostructure toward oxygen fluxes …”

Section: Resultsmentioning

confidence: 97%

“…Figure a,b shows the cross section of the 40GDC‐60LNO hollow fiber with the sandwich structure, which is evolved from its hollow fiber precursor . The prerequisite of such ion‐conducting membrane is its gas‐tightness to prevent the passage of other gases in the molecular state through pores.…”

Section: Resultsmentioning

confidence: 99%

“…The GDC powder was purchased from Ningbo SOFCMAN Corporation. Hollow fiber membrane precursors with 40 wt% GDC—60 wt% LNO (40GDC‐60LNO) were prepared using the LNO powder (calcined at 1000 °C) and the purchased GDC powder using the combined phase inversion–sintering technology . The details are described elsewhere .…”

Section: Methodsmentioning

confidence: 99%

“…FTIR analysis was used. The FTIR spectra (Bruker) were obtained with the ATR correction mode to characterize the functional groups of the powders before and after treatment in the pure CO 2 atmosphere at 900 °C for 24 h. Thermal expansion behaviors of LNO, GDC, and 40GDC‐60LNO powders were probed using dilatometry (DIL, 402C, Netzsch, Germany) with a heating rate of 5 °C min –1 from room temperature to 1000 °C . Prior to the dilatometry test, LNO, GDC, or 40GDC‐60LNO powder was pressed into a rectangular bar and sintered at 1400 °C for 4 h. XPS (Thermo Escalab 250) was obtained using an Al Ka X‐ray source to detect the La 3d, Ce 3d binding energy.…”

Section: Methodsmentioning

confidence: 99%

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Highly Stable Dual‐Phase Membrane Based on Ce_0.9Gd_0.1O_2–δ—La₂NiO_4+δ for Oxygen Permeation under Pure CO₂ Atmosphere

et al. 2019

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Dense oxygen ion–conducting ceramic membranes with CO2 resistance can promote many advanced applications such as membrane reactors for green chemical synthesis and oxy‐fuel combustion for clean energy delivery. The state‐of‐the‐art perovskite oxide membranes are characterized by their high O2 flux but low stability in a CO2‐containing atmosphere. To solve this problem, dual‐phase membranes have captured the imagination of researchers. Herein, a novel dual‐phase hollow fiber membrane with a composition of 40 wt% Ce0.9Gd0.1O2–δ (GDC)–60 wt% La2NiO4+δ (LNO) is developed via a combined phase inversion sintering process. During the high temperature treatment, La‐doping behavior is observed with La leaching out from the LNO phase and diffusing into the GDC phase. This dual phase membrane displays the O2 flux of 1.47 at 950 °C, which is reduced by 10% to 1.31 mL min−1 cm−2 when the sweep gas is switched from helium to pure CO2. Such minor O2 flux reduction is due to the strong CO2 adsorption on membrane surface occupying the O2 vacancies without permanent membrane damage, which is fully eliminated by an inert gas purge. Such a robust dual‐phase membrane exhibits the potential to overcome the low stability problem under the CO2‐containing atmosphere.

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“…Higher sintering temperatures would increase the compactness of the bulk section . This highlights the effect of the macrostructure toward oxygen fluxes …”

Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Highly Stable Dual‐Phase Membrane Based on Ce_0.9Gd_0.1O_2–δ—La₂NiO_4+δ for Oxygen Permeation under Pure CO₂ Atmosphere

et al. 2019

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“…To prepare the porous layer for B and C hollow fibre reactors, the SCY or SCY‐b powder was dispersed in alcohol and ultrasonicated. The powder mixture suspension was then coated onto the outer membrane surface . Between 750–950 °C and in all three different CO 2 feed concentration cases (5, 10, and 20 % CO 2 ), the CO yield and H 2 permeation flux increased in the order of A, B, and C (Figure ).…”

Section: Resultsmentioning

confidence: 98%

Enhanced CO selectivity for reverse water‐gas shift reaction using Ti₄O₇‐doped SrCe_0.9Y_0.1O_3‐δ hollow fibre membrane reactor

et al. 2019

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Reverse water-gas shift reaction (RWGS) is important in the CO 2 utilization cycle to convert carbon dioxide (CO 2 ) and hydrogen (H 2 ) to carbon monoxide (CO). In this work, the RWGS performance is evaluated by utilizing Ti 4 O 7 -doped SrCe 0.9 Y 0.1 O 3-d (SCY-b) hollow fibre membrane reactor where H 2 permeates through the SCY-b proton conducting membrane and reacts with CO 2 feed gas. Upon increasing the temperature from 750 to 950 8C, the CO yield increased from a negligible value to 14.82 %, when the sweep gas flow rate was 50 mL min À1 H 2 -He (50:50 vol. ratio) and the feed gas flow rate was 100 mL min À1 CO 2 -N 2 (5:95 vol. ratio). The CO yield increase with the temperature increase reflects the enhanced H 2 permeation flux through the SCY-b membrane at higher temperatures. Higher CO 2 concentration in the feed gas led to lower CO yield due to the higher amount of remaining CO 2 in the outlet stream. The deposition of porous SCY or SCY-b surface layer onto the hollow fibre outer circumference surface also increased H 2 flux through the fibre relative to the non-deposited one. Thermogravimetric and CO 2 -temperature programmed desorption results further reveal that SCY-b adsorbed CO 2 at temperature above 500 8C due to the reaction between CO 2 and SCY-b material. Despite the formation of SrCO 3 during RWGS, the SCY-b hollow fibre membrane reactor still displayed a stable CO yield of around 14 % throughout the 6-day continuous membrane reactor test.

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Novel La _0.7 Sr _0.3 FeO _{3 − δ} /(La _0.5 Sr _0.5 ) ₂ CoO _{4 + δ} composite hollow fiber membrane for O ₂ separation with high CO ₂ resistance

et al. 2019

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Recently, the reported Perovskite/Ruddlesden-Popper composite with significant improvement of oxygen surface kinetics has been adopted into gas separation process. Here, we report a novel La 0.7 Sr 0.3 FeO 3 − δ /(La 0.5 Sr 0.5 ) 2 CoO 4 + δ (LSF-LSC) composite hollow fiber membrane (HFM), which was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and thermal expansion test, etc. The O 2 permeation test results indicated that, under sweeping gas of pure He (100 mL min −1 ), the composite HFM exhibited the superior O 2 permeability (0.72 mL min −1 cm −2 ) at the temperature of 950°C with respect to the single La 0.7 Sr 0.3 FeO 3 − δ (LSF) membrane, acid-etched membrane, and (La 0.5 Sr 0.5 ) 2 CoO 4 + δ (LSC)-coated membrane. Moreover, the composite membrane exhibited high CO 2 tolerance as well as phase stability. The generation of hetero-interface between Ruddlesden-Popper phase and perovskite phase could be responsible for the improvement of the oxygen transportation over the fabricated composite membrane.

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Enhancement of oxygen permeation fluxes of La0.6Sr0.4CoO3− hollow fiber membrane via macrostructure modification and (La0.5Sr0.5)2CoO4+ decoration

Abstract: Enhancement of oxygen permeation fluxes of La0.6Sr0.4CoO3-δ hollow fiber membrane via macrostructure modification and (La0.5Sr0.5)2CoO4+δ decoration

Cited by 30 publications

References 39 publications

Highly Stable Dual‐Phase Membrane Based on Ce_0.9Gd_0.1O_2–δ—La₂NiO_4+δ for Oxygen Permeation under Pure CO₂ Atmosphere

Highly Stable Dual‐Phase Membrane Based on Ce_0.9Gd_0.1O_2–δ—La₂NiO_4+δ for Oxygen Permeation under Pure CO₂ Atmosphere

Enhanced CO selectivity for reverse water‐gas shift reaction using Ti₄O₇‐doped SrCe_0.9Y_0.1O_3‐δ hollow fibre membrane reactor

Novel La _0.7 Sr _0.3 FeO _{3 − δ} /(La _0.5 Sr _0.5 ) ₂ CoO _{4 + δ} composite hollow fiber membrane for O ₂ separation with high CO ₂ resistance

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Enhancement of oxygen permeation fluxes of La0.6Sr0.4CoO3− hollow fiber membrane via macrostructure modification and (La0.5Sr0.5)2CoO4+ decoration

Abstract: Enhancement of oxygen permeation fluxes of La0.6Sr0.4CoO3-δ hollow fiber membrane via macrostructure modification and (La0.5Sr0.5)2CoO4+δ decoration

Cited by 30 publications

References 39 publications

Highly Stable Dual‐Phase Membrane Based on Ce0.9Gd0.1O2–δ—La2NiO4+δ for Oxygen Permeation under Pure CO2 Atmosphere

Highly Stable Dual‐Phase Membrane Based on Ce0.9Gd0.1O2–δ—La2NiO4+δ for Oxygen Permeation under Pure CO2 Atmosphere

Enhanced CO selectivity for reverse water‐gas shift reaction using Ti4O7‐doped SrCe0.9Y0.1O3‐δ hollow fibre membrane reactor

Novel La 0.7 Sr 0.3 FeO 3 − δ /(La 0.5 Sr 0.5 ) 2 CoO 4 + δ composite hollow fiber membrane for O 2 separation with high CO 2 resistance

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Product

Resources

About

Highly Stable Dual‐Phase Membrane Based on Ce_0.9Gd_0.1O_2–δ—La₂NiO_4+δ for Oxygen Permeation under Pure CO₂ Atmosphere

Highly Stable Dual‐Phase Membrane Based on Ce_0.9Gd_0.1O_2–δ—La₂NiO_4+δ for Oxygen Permeation under Pure CO₂ Atmosphere

Enhanced CO selectivity for reverse water‐gas shift reaction using Ti₄O₇‐doped SrCe_0.9Y_0.1O_3‐δ hollow fibre membrane reactor

Novel La _0.7 Sr _0.3 FeO _{3 − δ} /(La _0.5 Sr _0.5 ) ₂ CoO _{4 + δ} composite hollow fiber membrane for O ₂ separation with high CO ₂ resistance