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000154943 0247_ $$2doi$$a10.1016/j.jeurceramsoc.2014.06.012
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000154943 1001_ $$0P:(DE-Juel1)129660$$aSchulze-Küppers, F.$$b0$$eCorresponding Author$$ufzj
000154943 245__ $$aTowards the fabrication of La0.98−xSrxCo0.2Fe0.8O3−δ perovskite-type oxygen transport membranes
000154943 260__ $$aAmsterdam [u.a.]$$bElsevier Science$$c2014
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000154943 520__ $$aLa0.98-xSrxCo0.2Fe0.8O3-d  (LSCF) is a candidate material for use as an oxygen transport membrane (OTM). In this work, fabrication-relevant properties (sintering behaviour, thermal and chemical expansion) of LSCF  (x = 0.2, 0.4, 0.6, 0.8) were investigated in order to select the preferred composition for fabricating a thin-film supported membrane able to withstand the thermochemical stresses encountered during manufacturing and operation with simultaneously high oxygen permeation flux. Partial substitution of La by Sr ions in LSCF is beneficial for increasing the oxygen permeation rate, but it causes drawbacks regarding manufacturing and operation. A Sr content of x ≥ 0.6 results in a swelling of the material during sintering, which complicates the manufacturing of thin, leak-free membranes. This swelling is related to oxygen release during heating, combined with the formation of a liquid phase above 1200 °C. Furthermore, an increase in total strain with Sr content is observed. This is caused by the chemical expansion, while there is no significant change in thermal expansion with increasing Sr content. The compositions x = 0.4 and x = 0.6 showed tolerable expansion coefficients as well as adequate sintering behaviour and were therefore selected for the fabrication of thin supported membranes. These supported membranes with a thickness of 30 µm were manufactured by sequential tape casting and characterised regarding microstructure and oxygen flux.
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000154943 536__ $$0G:(EU-Grant)608524$$aGREEN-CC - Graded Membranes for Energy Efficient New Generation Carbon Capture Process (608524)$$c608524$$fFP7-ENERGY-2013-1$$x1
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000154943 7001_ $$0P:(DE-Juel1)129587$$aBaumann, S.$$b1$$ufzj
000154943 7001_ $$0P:(DE-Juel1)129667$$aTietz, F.$$b2$$ufzj
000154943 7001_ $$0P:(DE-HGF)0$$aBouwmeester, H. J. M.$$b3
000154943 7001_ $$0P:(DE-Juel1)129637$$aMeulenberg, W. A.$$b4$$ufzj
000154943 773__ $$0PERI:(DE-600)2013983-4$$a10.1016/j.jeurceramsoc.2014.06.012$$gVol. 34, no. 15, p. 3741 - 3748$$n15$$p3741 - 3748$$tJournal of the European Ceramic Society$$v34$$x0955-2219$$y2014
000154943 8564_ $$uhttp://www.sciencedirect.com/science/article/pii/S0955221914003409
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