Synthesis of Sr-doped LaCrO3 powders by combustion method
Tóm tắt
Lanthanum strontium chromite (LSC) powders were synthesized by the combustion method, using five different fuels (urea, glycine, ethylene glycol, α-alanine, and citric acid). The ignition of the reagent mixture with urea takes a longer time, and more gases are released by combustion. A calcination step is essential for a good crystallization of the perovskite phase. X-ray diffraction patterns showed formation of perovskite phase and a small amount of SrCrO4 for the sample synthesized with urea after calcination. The crystallite sizes are in the range of 23–33 nm. Scanning electron microscopy revealed the porosity of the powders and the presence of agglomerates, formed by fine particles of different shapes. Thermogravimetric analysis showed a large mass loss for the sample synthesized with citric acid, probably caused by the absence of ignition, with primary polymerization of the precursor reagents.
Tài liệu tham khảo
Tanaka H, Misono M. Advances in designing perovskite catalysts. Curr Opin Solid State Mater Sci. 2001;5:381–7.
Minh NQ. Ceramic fuel cells. J Am Ceram Soc. 1993;76:563–88.
Singhal SC, Kendall K. High temperature solid oxide fuel cells: fundamentals, design and applications. Oxford: Elsevier; 2004.
Jiang SP, Li J. Cathodes. In: Fergus JW, Hui R, Li J, Wilkinson DP, Zhang J, editors. Solid oxide fuel cells: materials, properties and performance. Boca Raton: CRC Press; 2009. p. 131–77.
Zhang Q, Nakagawa T, Saito F. Mechanochemical synthesis of La0.7Sr0.3MnO3 by grinding constituent oxides. J Alloys Compd. 2000;308:121–5.
Bell RJ, Millar GJ, Drennan J. Influence of synthesis route on the catalytic properties of La1−x Sr x MnO3. Solid State Ion. 2000;131:211–20.
Chick LA, Pederson LR, Maupin GD, Bates JL, Thomas LE, Exarhos GJ. Glycine-nitrate combustion synthesis of oxide ceramic powders. Mater Lett. 1990;10:6–12.
Yang YJ, Wen T-L, Tu H, Wang D-Q, Yang J. Characteristics of lanthanum strontium chromite prepared by glycine nitrate process. Solid State Ion. 2000;135:475–9.
Patil KC, Aruna ST, Mimani T. Combustion synthesis: an update. Curr Opin Solid State Mater Sci. 2002;6:507–12.
Varma A, Rogachev AS, Mukasyan AS, Hwang S. Combustion synthesis of advanced materials: principles and applications. Adv Chem Eng. 1998;24:79–226.
Segadães AM, Morelli MR, Kiminami RGA. Combustion synthesis of aluminium titanate. J Eur Ceram Soc. 1988;18:771–81.
Fumo DA, Jurado JR, Segadães AM, Frade JR. Combustion synthesis of iron-substituted strontium titanate perovskites. Mater Res Bull. 1997;32:1459–70.
Prabhakaran K, Joseph J, Gokhale NM, Sharma SC, Lal R. Sucrose combustion synthesis of La x Sr(1−x)MnO3 (x ≤ 0.2) powders. Ceram Int. 2005;31:327–31.
Guo RS, Wei QT, Li HL, Wang FH. Synthesis and properties of La0.7Sr0.3MnO3 cathode by gel combustion. Mater Lett. 2006;60:261–5.
Berger D, Matei C, Papa F, Macovei D, Fruth V, Deloume JP. Pure and doped lanthanum manganites obtained by combustion method. J Eur Ceram Soc. 2007;27:4395–8.
Mukasyan AS, Costello C, Sherlock KP, Lafarga D, Varma A. Perovskite membranes by aqueous combustion synthesis: synthesis and properties. Sep Purif Technol. 2001;25:117–26.
Deshpande K, Mukasyan A, Varma A. Aqueous combustion synthesis of strontium-doped lanthanum chromite ceramics. J Am Ceram Soc. 2003;86:1149–54.
Biamino S, Badini C. Combustion synthesis of lanthanum chromite starting from water solutions: investigation of process mechanism by DTA–TGA–MS. J Eur Ceram Soc. 2004;24:3021–34.
Ringuedé A, Labrincha JA, Frade JR. A combustion synthesis method to obtain alternative cermet materials for SOFC anodes. Solid State Ion. 2001;141–142:549–57.
Williamson GK, Hall WH. X-ray line broadening from filed aluminium and wolfram. Acta Metall. 1953;1:22–31.
Hwang C-C, Wu T-Y, Wan J, Tsai J-S. Development of a novel combustion synthesis method for synthesizing of ceramic oxide powders. Mater Sci Eng B. 2004;111:49–56.
Conceição L, Ribeiro NFP, Furtado JGM, Souza MMVM. Effect of propellant on the combustion synthesized Sr-doped LaMnO3 powders. Ceram Int. 2009;35:1683–7.
Civera A, Pavese M, Saracco G, Specchia V. Combustion synthesis of perovskite-type catalysts for natural gas combustion. Catal Today. 2003;83:199–211.
Mori M, Hiei Y, Sammes NM. Sintering behavior and mechanism of Sr-doped lanthanum chromites with A site excess composition in air. Solid State Ion. 1999;123:103–11.
Jiang SP, Liu L, Ong KP, Wu P, Li J, Pu J. Electrical conductivity and performance of doped LaCrO3 perovskite oxides for solid oxide fuel cells. J Power Sour. 2008;176:82–9.
Mori M, Yamamoto T, Ichikawa T, Takeda Y. Dense sintered conditions and sintering mechanisms for alkaline earth metal (Mg, Ca and Sr)-doped LaCrO3 perovskites under reducing atmosphere. Solid State Ion. 2002;148:93–101.
Marinho EP, Souza AG, Melo DS, Santos IMG, Melo DMA, Silva WJ. Lanthanum chromites partially substituted by calcium, strontium and barium synthesized by urea combustion: thermogravimetry study. J Therm Anal Calorim. 2007;87:801–4.
Zupan K, Kolar D, Marinsek M. Influence of citrate–nitrate reaction mixture packing on ceramic powder properties. J Power Sour. 2000;86:417–22.
Rida K, Benabbas A, Bouremmad F, Peña MA, Sastre E, Martínez-Arias A. Effect of calcination temperature on the structural characteristics and catalytic activity for propene combustion of sol–gel derived lanthanum chromite perovskite. Appl Catal A. 2007;327:173–9.
Bansal NP, Zhong Z. Combustion synthesis of Sm0.5Sr0.5CoO3−x and La0.6Sr0.4CoO3−x nanopowders for solid oxide fuel cell cathodes. J Power Sour. 2006;158:148–53.
Prabhakaran K, Lakra J, Beigh MO, Gokhale NM, Sharma SC, Lal R. Sinterable La0.8Sr0.2CrO3 and La0.7Ca0.3CrO3 powders by sucrose combustion synthesis. J Mater Sci. 2006;41:6300–4.
Worayingyong A, Kangvansura P, Ausadasuk S, Praserthdam P. The effect of preparation: Pechini and Schiff base methods, on adsorbed oxygen of LaCoO3 perovskite oxidation catalysts. Colloids Surf A. 2008;315:217–25.