气候变化领域集成服务门户(CCPortal): Novel strategy for improving the oxygen permeability of zirconia-based dual-phase membranes

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DOI	10.1039/c8ee03105c
	Novel strategy for improving the oxygen permeability of zirconia-based dual-phase membranes
	Kwon Y.-I.; Park J.H.; Kang S.M.; Nam G.D.; Lee J.W.; Kim J.H.; Kim D.; Jeong S.M.; Yu J.H.; Joo J.H.
发表日期	2019
ISSN	1754-5692
起始页码	1358
结束页码	1368
卷号	12 期号:4
英文摘要	Recently, a number of studies on oxygen transport membranes employing zirconia composites as the oxygen ion conductor have been reported, given that stabilized zirconia has superior robustness due to its high mechanical strength, a low sintering temperature, and a chemical expansion coefficient that makes it suitable for commercialization. However, the drastic decrease in the oxygen permeability due to the inter-diffusion reaction between zirconium and rare-earth metals in zirconia-perovskite composites remains a conundrum for the industrial application of oxygen permeation membranes. In this study, we propose a breakthrough strategy for dramatically enhancing the oxygen flux of a zirconia-based dual-phase membrane by applying a new coating material and minimizing the perovskite content. The membrane comprises a mixture of scandia-stabilized zirconia and strontium-doped lanthanum manganate with a volume ratio of 70:30. The Ruddlesden-Popper oxide structure (Nd2NiO4+δ), which exhibits low reactivity with zirconium and a high surface exchange coefficient, as well as high chemical stability in the presence of CO2, was used as a new coating material to improve the exchange reaction on the membrane surface. The highest oxygen permeation flux of up to 1.65 mL cm-2 min-1 was accomplished with the zirconia-based membrane at 900 °C under an air/He atmosphere. This value is much higher than that of La0.6Sr0.4CoO3-δ (LSC), a representative perovskite coating material with high surface exchange kinetics, used as a membrane coating. Superior stability was also observed in a long-term test where pure CO2 was used as the sweep gas. © 2019 The Royal Society of Chemistry.
语种	英语
scopus关键词	Carbon dioxide; Chemical stability; Coatings; Lanthanum compounds; Oxygen; Oxygen permeable membranes; Perovskite; Plating; Rare earths; Sintering; Strontium compounds; Surface diffusion; Surface reactions; Zirconia; Zirconium; High mechanical strength; Low sintering temperature; Oxygen permeation membranes; Oxygen transport membranes; Oxygen-permeation flux; Scandia stabilized zirconia; Strontium-doped lanthanum manganates; Surface exchange coefficients; Permeation; chemical method; ion exchange; membrane; oxygen; permeability; zircon
来源期刊	Energy and Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162577
作者单位	Department of Advanced Material Engineering, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju, Chungbuk, 28644, South Korea; Korea Institute of Energy Research, Separation and Conversion Materials Laboratory, 152 Gajeong-ro, Daejeon, Chungnam, 34129, South Korea; Semiconductor R and D Center, Samsung Electronics, 1-1 Samsungjeonja-ro, Hwasung, Gyeonggi-do, 18448, South Korea; Department of Chemical Engineering, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju, Chungbuk, 28644, South Korea
推荐引用方式 GB/T 7714	Kwon Y.-I.,Park J.H.,Kang S.M.,et al. Novel strategy for improving the oxygen permeability of zirconia-based dual-phase membranes[J],2019,12(4).
APA	Kwon Y.-I..,Park J.H..,Kang S.M..,Nam G.D..,Lee J.W..,...&Joo J.H..(2019).Novel strategy for improving the oxygen permeability of zirconia-based dual-phase membranes.Energy and Environmental Science,12(4).
MLA	Kwon Y.-I.,et al."Novel strategy for improving the oxygen permeability of zirconia-based dual-phase membranes".Energy and Environmental Science 12.4(2019).