Synthesis and catalytic properties of thermally and hydrothermally stable, high-surface-area SiO2–CeO2 mesostructured composite materials and their application for the removal of sulfur compounds from gasoline

摘要: Abstract Nanostructured SiO2–CeO2 composite materials were prepared by embedding monodispersed, inorganic colloids in ultrafine structured layers of mineral binder using a self-assembly process. Cohesive, highly concentrated CeO2 nanoparticle arrays, characterized spacing the range diameter, synthesized. These possess high surface areas and are stable to temperatures up 800 °C virtue roughness on nanometer scale relatively large layer thickness. Gaseous access surfaces was obtained through matching sizes thickness layers. nanostructured showed very good catalytic properties as additives for reducing sulfur concentration gasoline fluid cracking. We demonstrate that these thermally stable, high-surface-area arrays nanoparticles best suited cracking long-chain, those which commonly present greatest difficulty, alkylthiophenes alkylbenzothiophenes.