Effect of pH on synthesis and properties of perovskite oxide via a citrate process
作者： Zhentao Wu , Wei Zhou , Wanqin Jin , Nanping Xu
DOI: 10.1002/AIC.10664
关键词:
摘要: A series of Lao(0.6)Sro(0.4)Co(0.4)Fe(0.6)O(3-delta) (LSCF) perovskite-type oxides were synthesized using a modified citrate process under various pH conditions (pH = 1, 3, 5, 7, and 9, respectively). The effect on the chelate process, crystal development, morphology, oxygen permeability LSCF investigated. FT-IR analysis showed that processes for 1 3 different from those 9. XRD SEM observations revealed crystalformation morphology dependent precursors with conditions. membranes derived lower values 3) exhibited larger apparent activation energy permeation than other samples 9) in range 1073 - 1123 K. This study indicated properties such as crystallinity oxide could be tailored by controlling synthesis process.
unirioja.es
uq.edu.au
core.ac.uk参考文章(42)
Robert M. Smith, Arthur Earl Martell, Critical Stability Constants ,(2011)
A.J. Burggraaf, L. Cot, Fundamentals of inorganic membrane science and technology Membrane Science and Technology. ,vol. 4, ,(1996) , 10.1016/S0927-5193(96)80001-5
F.M Figueiredo, V.V Kharton, A.P Viskup, J.R Frade, Surface enhanced oxygen permeation in CaTi1−xFexO3−δ ceramic membranes Journal of Membrane Science. ,vol. 236, pp. 73- 80 ,(2004) , 10.1016/J.MEMSCI.2004.02.008
D H A Blank, H Kruidhof, J Flokstra, Preparation of YBa2Cu3O7-? by citrate synthesis and pyrolysis Journal of Physics D. ,vol. 21, pp. 226- 227 ,(1988) , 10.1088/0022-3727/21/1/036
Gilberto Mondragón, Ventura Rodríguez-Lugo, Victor M. Castaño, Mavis L. Montero, Alejandro Sáenz, Alejandro Sáenz, Effect of pH on the precipitation of hydroxyapatite on silica gels Materials Research Innovations. ,vol. 7, pp. 68- 73 ,(2003) , 10.1007/S10019-003-0230-X
M. Dakanali, E. T. Kefalas, C. P. Raptopoulou, A. Terzis, T. Mavromoustakos, A. Salifoglou, Synthesis and Spectroscopic and Structural Studies of a New Cadmium(II)−Citrate Aqueous Complex. Potential Relevance to Cadmium(II)−Citrate Speciation and Links to Cadmium Toxicity Inorganic Chemistry. ,vol. 42, pp. 2531- 2537 ,(2003) , 10.1021/IC0205029
M. Matzapetakis, C. P. Raptopoulou, A. Terzis, A. Lakatos, T. Kiss, A. Salifoglou, Synthesis, Structural Characterization, and Solution Behavior of the First Mononuclear, Aqueous Aluminum Citrate Complex Inorganic Chemistry. ,vol. 38, pp. 618- 619 ,(1999) , 10.1021/IC9806131
V.V Kharton, A.A Yaremchenko, E.V Tsipis, A.A Valente, M.V Patrakeev, A.L Shaula, J.R Frade, J Rocha, Characterization of mixed-conducting La2Ni0.9Co0.1O4+δ membranes for dry methane oxidation Applied Catalysis A-general. ,vol. 261, pp. 25- 35 ,(2004) , 10.1016/J.APCATA.2003.10.028
A SAMMELLS, R COOK, J WHITE, J OSBORNE, R MACDUFF, Rational selection of advanced solid electrolytes for intermediate temperature fuel cells Solid State Ionics. ,vol. 52, pp. 111- 123 ,(1992) , 10.1016/0167-2738(92)90097-9
Shiguang Li, Hong Qi, Nanping Xu, Jun Shi, Tubular Dense Perovskite Type Membranes. Preparation, Sealing, and Oxygen Permeation Properties Industrial & Engineering Chemistry Research. ,vol. 38, pp. 5028- 5033 ,(1999) , 10.1021/IE990446S