Abstract
This paper aims to characterize structurally and thermally the calcium aluminate synthesized with the ethylenediamine tetraacetic acid (EDTA) by the sol-gel process. Structural analysis were made with Fourier Transform Infrared Spectroscopy and X-ray diffraction and thermal analysis were performed as thermogravimetric and differential thermical analysis. It was observed that structural aluminate features were controlled by the synthetic and thermal conditions.

Keywords
calcium aluminate, EDTA gel route, FTIR, TGA-DTA analysis; x-ray diffraction

Cite this paper
Valéria Rejane Silva Brito, Raquel Jovita dos Santos, Paulo Neilson Marques dos Anjos, Luiz Carlos Salay, Analu Rocha Costa, Nila Cecília Lopes, STRUCTURAL AND THERMAL ANALYSIS OF CALCIUM ALUMINATE OBTAINED BY THE SOL-GEL PROCESS , SCIREA Journal of Materials. Volume 1, Issue 1, October 2016 | PP. 8-19.

References

[ 1 ]	MERCURY, J. M. R.; AZA, A. H.; PENA, P. Synthesis of CaAl2O4 from powders: Particle size effect. Journal of the European Ceramic Society, 25 (2005) 3269–3279
[ 2 ]	GAKI, A.; CHRYSAFI, R.; PERRAKI, TH.; KAKALI, G. Synthesis of calcium aluminates through the polymeric precursor route. CI&CEQ, 12 (2) 137–140, 2006
[ 3 ]	XU, Y.; HUANG, G.; LONG, H. Synthesis of lanthanum aluminate via the ethylenediaminetetraacetic acid gel route. Ceramics International, 29 (2003) 837–840
[ 4 ]	ZHANG, Q.; SAITO, F. Mechanochemical Synthesis of Lanthanum Aluminate by Grinding Lanthanum Oxide with Transition Alumina. J. Am. Ceram. Soc., v. 83, n. 2, 439–41, 2000
[ 5 ]	LI, W.; ZHUO, M. W.; SHI, J. L. Synthesizing nano LaAlO3 powders via co-precipitation method. Materials Letters, 58, 365–368, 2004
[ 6 ]	ANJOS, P. N. M.; PEREIRA, E. C.; GOBATO, Y. G. Study of the structure and optical properties of rare-earth-doped aluminate particles prepared by an amorphous citrate sol–gel process. Journal of Alloys and Compounds, 391, 277–283, 2005
[ 7 ]	BEHERA, S. K.; SAHU, P. K.; PRATIHAR, S. K.; BHATTACHARYYA, S. Low temperature synthesis of spherical lanthanum aluminate nanoparticles. Materials Letters. v. 58, 3710– 3715, 2004
[ 8 ]	ZHANG, H.; FU, X.; NIU, S.; SUN, G.; XIN, Q. Synthesis and characterization of ZrO2:Eu nanopowder by EDTA complexing sol–gel method. Materials Chemistry and Physics, 91, 361–364, 2005
[ 9 ]	DAVAR, F.; SALAVATI-NIASARI, M. Synthesis and characterization of spinel-type zinc aluminate nanoparticles by a modified sol–gel method using new precursor. Journal of Alloys and Compounds, 509, 2487–2492, 2011
[ 10 ]	TANG, Z.; ZHANG, F.; ZHANG, Z.; HUANG, C.; LIN, Y. Luminescent properties of SrAl2O4: Eu, Dy material prepared by the gel method. Journal of the European Ceramic Society, 20, 2129-2132, 2000
[ 11 ]	OLIVEIRA, H. F. N.; TRINCA, R. B.; GUSHIKEM, Y. Síntese e estudo de ortossilicatos de zinco luminescentes com aplicação da técnica sol-gel. Quim. Nova, v. 32, n. 5, 1346-1349, 2009
[ 12 ]	KUMAR, R. T.; SURESH, P.; SELVAM, N. C. S.; KENNEDY, L. J.; VIJAYA, J. J. Comparative study of nano copper aluminate spinel prepared by sol–gel and modified sol–gel techniques: Structural, electrical, optical and catalytic studies. Journal of Alloys and Compounds, 522, 39– 45, 2012
[ 13 ]	LU, J.; LI, L.; WANG, Z.; WEN, B.; CAO, J. Synthesis of visible-light-active TiO2-based photo-catalysts by a modified sol–gel method. Materials Letters, 94, 147–149, 2013
[ 14 ]	KAITHWAS, N.; DAVE, M.; KAR, S.; BARTWAL, K. S. Structural features of Ce doped YAG nanoparticles synthesized by modified sol–gel method. Physica E, 44, 1486–1489, 2012
[ 15 ]	KWON, S. W.; PARK, S. B. Effect of precursors on the preparation of lithium aluminate. Journal of Nuclear Materials, 246, 131-138, 1997
[ 16 ]	GONZALEZ, R. D.; LOPEZ, T.; GOMEZ, R. Sol-Gel preparation of supported metal catalysts. Catalysis Today, 35, 293-317, 1997
[ 17 ]	DIMITRIEV, Y.; IVANOVA, Y.; IORDANOVA, R. History of sol-gel science and technology (review). Journal of the University of Chemical Technology and Metallurgy, 43, 2, 181-192, 2008
[ 18 ]	FARIAS, R. F. (organizador). Química de Coordenação: fundamentos e atualidades. Campinas, SP: Editora Átomo, 2005.
[ 19 ]	JONES, C. J. A química dos elementos dos blocos d e f. Porto Alegre: Bookman, 2002.
[ 20 ]	LEE, J. D. Química inorgânica não tão concisa. São Paulo: Edgard Blücher, 5. ed. 1999
[ 21 ]	SANTOS, J. C. et al. Síntese da perovsquita do tipo LaNiO3 através do método dos precursores quelantes usando EDTA: otimização do teor de agente quelante. Química Nova, Vol. 34, No. 8, 1339-1342, 2011
[ 22 ]	ZHENG, L.; XIONG, L. Layer-by-layer assembly of PA-EDTA/PAH multilayer films and their potential-switchable electrochemistry. Colloids and Surfaces A: Physicochemical and Engineering Aspects 289 (2006) 179–184