INVESTIGADORES
FARFAN TORRES Elsa Monica
artículos
Título:
Porous silica pillared a-ZrTi phosphate-phosphonates materials
Autor/es:
M. MARTINEZ-LARA; E.M. FARFAN TORRES; J. SANTAMARÍA; A. JÍMENEZ LÓPEZ
Revista:
SOLID STATE IONICS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 1994 vol. 73 p. 189 - 198
ISSN:
0167-2738
Resumen:
By rhe sol-gel method, there have been prepared different phosphate-phosphonates of zirconium-titanium with formula Zr0.75Ti0.25(HPO4)2-x(C6H5PO3)x, x varies from 0.65 to 1.8. The intercalation of hydrolysed derivatives from aminopropyltriethoxysilane, NH2(CH3)3Si(OC2H5)3, into these compounds gives arise, after heating at 773 K, to the formation of silica pillars between the layers, with basal apacing approximately 14.5 Å, surface aarea up to 149 m2/g and high acidity (1.1 ? 1.6 mmol NH3 g-1 between 373-673 K).
