Artículos de revistas
Citric Acid Effect On Aqueous Sol-gel Cordierite Synthesis
Registro en:
Journal Of Non-crystalline Solids. , v. 273, n. 01/03/15, p. 140 - 144, 2000.
223093
2-s2.0-0008970504
Autor
Bertran C.A.
Da Silva N.T.
Thim G.P.
Institución
Resumen
Cordierite was synthesized by a simple aqueous sol-gel route. Citric acid action as a chelant for the Al3+ ion, and for controlling phase segregation during the drying and initial thermal treatment of the gel, results in an amorphous precursor that crystallizes to μ-cordierite and spinel. The changes in the ratios of the crystalline phases, formed during dry gel calcination at 1000°C for 12 h were dependent on the ratio (L/M) of citric acid/Al3+ (mol/mol). For L/M3 and L/M5 samples, the ratio between the amount of μ-cordierite phase and the amount of spinel phase was the same, while, for the sample L/M1, the amount of μ-cordierite was larger than that found in the other samples. © 2000 Elsevier Science B.V. All rights reserved. 273 01/03/15 140 144 Inoguchi, K., Nakanishi, T., Asano, M., Method for producing a cordierite body, US Pat. 4434117, 28 February 1984Ikawa, H., Otagiri, T., Imai, O., Suzuki, M., Urabe, K., Udagawa, S., (1986) J. Am. Ceram. Soc., 69, p. 492 Barry, T.I., Lay, L.A., Morrel, R., (1973) Proc. Br. Ceram. Soc., 22, p. 27 Morrel, R., (1979) Proc. Br. Ceram. Soc., 28, p. 53 Sales, M., Alarcon, J., (1995) J. Mater. Sci., 30, p. 2341 Hardy, A.B., Gowda, G., McMahon, T.J., Riman, R.E., Rhine, W.E., Bowen, H.K., (1988) Ultrastructure Processing of Advanced Ceramics, p. 407. , Wiley, New York Selvaraj, U., Komarneni, S., Roy, R., (1990) J. Am. Ceram. Soc., 73, p. 3663 Yoldas, B.E., (1979) J. Mater. Sci., 14, p. 1843 Pechini, M., Method of preparing lead and alkaline-earth titanates and niobates and coating method using the same to form a capacitor, US Pat. 3330697, 11 July 1967Mizukami, F., Kobayashi, Y., Niwa, S., Toba, M., Shimizu, K., (1988) J. Chem. Soc. Chem. Commun., p. 1540 Lee, S., Kriven, W.M., (1998) J. Am. Ceram. Soc., 81, p. 2605 Iler, R.K., (1979) The Chemistry of Silica, p. 365. , Wiley, New York Pinckney, L.R., Beall, G.H., (1997) J. Non-Cryst. Solids, 219, p. 219 Feng, T.L., Gurian, P.L., Healy, M.D., Barron, A.R., (1990) Inorg. Chem., 29, p. 408 Eitel, W., (1964) Silicate Science, 1, p. 23. , Academic Press, New York Suzuki, H., Ota, K., Saito, H., (1987) Yogyo-Kyokai Shi, 95, p. 163 Janackovic, D.J., Jokanovic, V., Kostic-Gvozdenovic, L.J., Zec, S., Uskokovic, D., (1997) J. Mater. Sci., 32, p. 163 Douy, A., (1992) J. Non-Cryst. Solids, 147, p. 554