Synthesis of Perovskite-Type La0.7Sr0.3Co0.5Fe0.5O3-δ Oxide Membranes and Their Oxygen Permeation Performance in Different Atmospheres for Carbon Dioxide-Oxygen Separation

ABSTRACTMethane conversion to synthesis gas in membrane reactors that use dense mixed electronic-ionic conducting membranes for oxygen separation has received much recent attention. The oxygen flux achievable in these reactors depends on a combination of the bulk diffusion rate for oxygen transport and the surface reaction rate for oxygen activation and either recombination or reaction with methane. Here we compare recent oxygen permeation data for tubular membranes of La0.5Sr0.5Fe0.8Ga0.2O3-δ with our previous results for SrCO0.8Fe0.2O3-δ, SrFeCO0.5O3.25-δ. The pressure dependence of the oxygen permeation flux has been measured at different temperatures and used to determine the relative importance of bulk and surface kinetics for these oxides.

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Effects of Nano Powder Synthesis Methods, Shaping and Sintering Conditions on Microstructure and Oxygen Permeation of La0.6Sr0.4Co0.2Fe0.8O3-Δ (LSCF) Perovskite-type Membranes

High Temperature Materials and Processes ◽

10.1515/htmp.2011.128 ◽

2012 ◽

Vol 31 (1) ◽

Cited By ~ 4

Author(s):

Amir Atabak Asadi ◽

Amir Behrouzifar ◽

Toraj Mohammadi ◽

Afshin Pak

Keyword(s):

Oxygen Permeation ◽

Synthesis Methods ◽

Powder Synthesis ◽

Nano Powder ◽

Sintering Conditions ◽

Perovskite Type

AbstractLa

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Oxy-fuel combustion feasibility of compression ignition engines using oxygen separation membranes for enabling carbon dioxide capture

Energy Conversion and Management ◽

10.1016/j.enconman.2021.114732 ◽

2021 ◽

Vol 247 ◽

pp. 114732

Author(s):

J.R. Serrano ◽

F.J. Arnau ◽

L.M. García-Cuevas ◽

V.H. Farias

Keyword(s):

Carbon Dioxide ◽

Carbon Dioxide Capture ◽

Fuel Combustion ◽

Compression Ignition ◽

Oxygen Separation ◽

Separation Membranes ◽

Compression Ignition Engines

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Stability and Transport Conductivity of Perovskite Type BaZrxCe0.8-xNd0.2O3-δ

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.554-556.404 ◽

2012 ◽

Vol 554-556 ◽

pp. 404-407 ◽

Cited By ~ 5

Author(s):

Shi Jing Zhan ◽

Xue Feng Zhu ◽

Wei Ping Wang ◽

Wei Shen Yang

Keyword(s):

Carbon Dioxide ◽

Fuel Cell ◽

Citric Acid ◽

Solid Oxide Fuel Cell ◽

Chemical Stability ◽

High Conductivity ◽

Solid Oxide ◽

Good Stability ◽

Oxide Fuel ◽

Perovskite Type

Solid oxide components such as electrolyte for solid oxide fuel cell require chemical stability and high conductivity. Substituting Zr for Ce in BaCe0.8Nd0.2O3-δ improves the chemical stability but reduces conductivity. The objective of this work was to study the optimization of conductivity and chemical stability by changing the ratio of Ce to Zr in BZCN. Perovskite type BaZrxCe0.8-xNd0.2O3-δ (BZCN) powders were prepared by an EDTA–citric acid (EC) process. BaZrxCe0.8-xNd0.2O3-δ (x≥0.4) oxides show good chemical stability against carbon dioxide. The conductivities of sintered samples increased with the temperature and decrease with their Zr content. The good chemical stability and conductivity of BaZr0.4Ce0.4Nd0.2O3-δ is potential to be practically used with both high conductivity and good stability

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