Artículos de revistas
Decrease of interlamellar spacing of silica samples induced by external pressure
Registro en:
Journal Of Non-crystalline Solids. Elsevier Science Bv, v. 276, n. 41699, n. 56, n. 60, 2000.
0022-3093
WOS:000089578800008
10.1016/S0022-3093(00)00277-5
Autor
de Farias, RF
Martinez, L
Airoldi, C
Institución
Resumen
Lamellar silica and cadmium or mercury derivative-doped samples were synthesized by neutral amine route through the sol-gel process. These samples showed a decrease of the interlamellar ii-space promoted only by an increase of the externally applied pressure on the samples. For a constant external pressure the observed decrease has a linear behavior as a function of time. The undoped lamellar silica, when pressed under 760 mPa for 45 min, exhibited a decrease of the interlamellar distance of 16%. The obtained results suggested that under an increased external pressure, cadmium is forced to change its coordination environment, to adjust to a most stable structure. (C) 2000 Elsevier Science B.V. All rights reserved. 276 41699 56 60