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https://hdl.handle.net/2440/100255
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Type: | Journal article |
Title: | A new CO₂-resistant Ruddlesden-Popper oxide with superior oxygen transport: A-site deficient (Pr₀.₉La₀.₁)₁.₉(Ni₀.₇₄Cu₀.₂₁Ga₀.₀₅)O₄₊ổ |
Other Titles: | A new CO(2)-resistant Ruddlesden-Popper oxide with superior oxygen transport: A-site deficient (Pr(0).(9)La(0).(1))(1).(9)(Ni(0).(74)Cu(0).(21)Ga(0).(05))O(4+)o |
Author: | Xue, J. Liao, Q. Chen, W. Bouwmeester, H. Wang, H. Feldhoff, A. |
Citation: | Journal of Materials Chemistry A, 2015; 3(37):19107-19114 |
Publisher: | Royal Society of Chemistry |
Issue Date: | 2015 |
ISSN: | 2050-7488 2050-7496 |
Statement of Responsibility: | Jian Xue, Qing Liao, Wei Chen, Henny J.M. Bouwmeester, Haihui Wang and Armin Feldhoff |
Abstract: | A-site deficient (Pr₀.₉La₀.₁)₁.₉Ni₀.₇₄Cu₀.₂₁Ga₀.₀₅O₄₊ổ ((PL)₁.₉NCG), with the K₂NiF₄ structure, is found to exhibit higher oxygen transport rates compared with its cation-stoichiometric parent phase. A stable oxygen permeation flux of 4.6 × 10⁻⁷ mol cm⁻² s⁻¹ at 900 °C at a membrane thickness of 0.6 mm is measured, using either helium or pure CO₂ as sweep gas at a flow rate of 30 mL min⁻¹ The oxygen flux is more than two times higher than that observed through A-site stoichiometric (PL)₂.₀NCG membranes operated under similar conditions. The high oxygen transport rates found for (PL)₁.₉NCG are attributed to highly mobile oxygen vacancies, compensating A-site deficiency. The high stability against carbonation gives (PL)₁.₉NCG potential for use, e.g., as a membrane in oxy-fuel combustion processes with CO₂ capture |
Rights: | © The Royal Society of Chemistry 2015 |
DOI: | 10.1039/c5ta02514a |
Grant ID: | http://purl.org/au-research/grants/arc/FT140100757 |
Published version: | http://dx.doi.org/10.1039/c5ta02514a |
Appears in Collections: | Aurora harvest 3 Chemical Engineering publications |
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