Abstract

ACOSTA, D.R et al. ESTUDIOS POR MICROSCOPIA ELECTRONICA DE MATERIALES MESOPOROSOS CATALITICOS: EL EFECTO DE LA RELACION SO₄/SiO₂ EN LA SINTESIS DE LOS MISMOS. Rev. LatinAm. Met. Mat. [online]. 2001, vol.21, n.2, pp.86-89. ISSN 0255-6952.

Mesoporous materials of the MCM family were prepared by hydrothermal synthesis with variations in the Sulfate / Silicon ratio in order to study the effects of sulfate ions on structural characteristics. The samples were studied by X ray diffraction, N2 Adsorption, thermogravimetric analysis and electron microscopy in the high resolution modalitiy. A commercial computing program was used to study the high resolution electron micrographs. It was found that as the sulfate ion concentration increases in the starting compounds, the wall thickness of the tunnels grows in a continuous way..

Keywords : mesoporous synthesis; electron microscopy; sulfate concentration.