Effect of Heat Treatment on the Phase Formation of La0.6Sr0.4CoO3-α

Autor: A. A. Samat, N. A. Abdullah, M. A. M. Ishak, N. Osman
Jazyk: angličtina
Rok vydání: 2012
Předmět:
DOI: 10.5281/zenodo.1063122
Popis: Powder of La0.6Sr0.4CoO3-α (LSCO) was synthesized by a combined citrate-EDTA method. The as-synthesized LSCO powder was calcined, respectively at temperatures of 800, 900 and 1000 °C with different heating/cooling rates which are 2, 5, 10 and 15 °C min-1. The effects of heat treatments on the phase formation of perovskite phase of LSCO were investigated by powder X-ray diffraction (XRD). The XRD patterns revealed that the rate of 5 °C min-1 is the optimum heating/cooling rate to obtain a single perovskite phase of LSCO with calcination temperature of 800 °C. This result was confirmed by a thermogravimetric analysis (TGA) as it showed a complete decomposition of intermediate compounds to form oxide material was also observed at 800 °C.
{"references":["A. V. Berenov, A. Atkinson, J. A. Kilner, E. Bucher, and W. Sitte.\n\"Oxygen tracer diffusion and surface exchange kinetics in\nLa0.6Sr0.4CoO3-╬▒.\" Solid State Ionics 181, 2010: 819-826.","J. Shao, Y. Tao, J. Wang, C. Xu, and W. G. Wang. \"Investigation of\npercursors in the preparation of nanostructured La0.6Sr0.4Co0.2Fe0.8O3-╬▒\nvia a modified combined complexing method.\" Journal of Alloys and\nCompounds 484, 2009: 263-267.","Y. Tao, J. Shao, J. Wang, and W. G. Wang. \"Synthesis and properties of\nLa0.6Sr0.4CoO3-╬▒ nanopowder.\" Journal of Power Sources 185, 2008:\n609-614.","R. Ran, Y. Guo, D. Gao, S. Liu, and Z. Shao. \"Effect of foreign oxides\non the phase structure, sintering and transport properties of\nBa0.5Sr0.5Co0.8Fe0.2O3-╬▒ as ceramic membranes for oxygen separation.\"\nSeparation and Purification Technology 81, 2011: 384-391.","I. Kashif, A. Abdelghany, and R. El-said. \"Effect of sintering and\nmilling time on lead magnesium niobate nanocrystallite phase.\"\nMaterials Chemistry and Physics 115, 2009: 309-312.","R. H. E. van Doorn, H. Kruidhof, A. Nijmeijer, L. Winnubst, and A. J.\nGurggraaf. \"Preparation of La0.3Sr0.7CoO3-╬▒ perovskite by thermal\ndecomposition of metal-EDTA complexes.\" J. Mater. Chem 8(9), 1998:\n2109-2112.","N. P. Bansal, and Z. Zhong. \"Combustion synthesis of Sm0.5Sr0.5CoO3-╬▒\nand La0.6Sr0.4CoO3-╬▒ nanopowders for solid oxide fuel cell cathodes.\"\nJournal of Power Sources 158, 2006: 148-153.","K. Rida, A. Benabbas, F. Bouremmad, M. A. Pena, E. Sastre, and A.\nMartinez-Arias. \"Effect of calcination temperature on the structural\ncharacteristics and catalytic activity for propene combustion of sol-gel\nderived lanthanum chromite perovskite.\" Applied Catalysis A: General\n327, 2007: 173-179.","K. Rida, M. A. Pena, E. Sastre, and A. Martinez-Arias. \"Effect of\ncalcination temperature on structural properties and catalytic activity in\noxidation reactions of LaNiO3 perovskite prepared by Pechini method.\"\nJournal of Rare Earths, Vol. 30, No. 3, 2012: 210-216.\n[10] H. W. Wang, D. A. Hall, and F. R. Sale. \"A thermoanalytical study of\nthe metal nitrate-EDTA precursors for lead zirconate titanate ceramic\npowders.\" Journal of Thermal Analysis, Vol. 41, 1994: 605-620.\n[11] Wongmaneerung, R., R. Yimnirun, and S. Ananta. \"Effect of two-stage\nsintering on phase formation, microstructure and dielectric properties of\nperovskite PMN ceramics derived from a corundum Mg4Nb2O9\nprecursor.\" Materials Chemistry and Physics 114, 2009: 569-575.\n[12] Z. H. Yang, and Y. S. Lin. \"Synergetic thermal effects for oxygen\nsorption and order-disorder transition on perovskite-type oxides.\" Solid\nState Ionics 176, 2005: 89-96.\n[13] E. Avvakumov, M. Senna, and N. Kosova. \"Chapter 6:\nMechanochemical Synthesis of Double Oxides.\"\n[14] R. Pereniguez, J. L. Hueso, F. Gaillard, J. P. Holgado, and A. Caballero.\n\"Study of oxygen reactivity in La1-xSrxCoO3-╬▒ perovskites for total\noxidation of toluene.\" Catal Lett 142, 2012: 408-416.\n[15] P. Bomlai, N. Sirikulrat, and T. Tunkasiri. \"Effect of heating rate on the\nproperties of Sb and Mn-doped barium strontium titanate PTCR\nceramics.\" Materials Letters 59, 2005: 118-122.\n[16] P. Duran, F. Capel, J. Tartaj, D. Gutierrez, and C. Moure. \"Heating-rate\neffect on the BaTiO3 formation by thermal decomposition of metal\ncitrate polymeric precursors.\" Solid State Ionics 141-142, 2001: 529-\n539.\n[17] Yi-Cheng. \"Effect of heating rate on properties of Pb(Mg1/3Nb2/3)O3\nceramics produced by the reaction-sintering process.\" Materials Letters\n58, 2004: 944-947.\n[18] G.T.K.Fey, J. G. Chen., Z. F. Wang, H. Z. Yang, and T. P. Kumar.\n\"Saturated linear dicarboxylic acid as chelating agents for the sol-gel\nsynthesis of LiNi0.8Co0.2O2.\" Materials Chemistry and Physics. 87,\n2004: 246-255."]}
Databáze: OpenAIRE
Externí odkaz: