Puede utilizar el filtro de búsqueda del panel izquierdo para acotar los resultados
Filtro
Tipo de publicación
Todos Libros Revistas
Título
Autor
Palabras clave
ISBN
Acceso DOI
Acceso digital CSIC
Buscar
Datos técnicos
RevistaMicroporous and Mesoporous Materials
Año2014
Volumen186
Páginas146–154
Internacional

Solvothermal synthesis of disordered mesoporous materials based on a Si–N framework in ionic liquids

Autores:A.I. Saugar, Álvaro Mayoral , J. Perez-Pariente
Grupos de investigación:Tamices Moleculares

Silicon–nitrogen network based porous materials have been synthesized by a novel method based on the preparation of silicon diimide gel by the ammonolysis of silicon tetrachloride using an ionic liquid as solvent followed by a heating process. The resulting materials contain ionic liquid molecules occluded inside the framework, which can be remove by heat treatment at 600 °C under flowing ammonia leading to microporous and mesoporous materials with high surface areas. The pore size of the materials is tailored by the variation of the experimental conditions.

STEM investigations reveal a disordered porous structure with pores with an average diameter of 10 nm in the mesoporous samples. A N/Si molar ratio higher than 2 is obtained for all the ammonia-calcined materials and FTIR and XPS measurements indicate a high number of Si–NH groups, both in the bulk and on the materials surface.

Palabras clave:Silicon diimide, Ionic liquids, Porous materials, STEM, XPS
logo de CSIC