The possibility of phase change in amorphous silica-alumina synthesis to FAU zeolite using carbon nano structures

Abstract

A novel synthetic method has been developed to synthesize high silica faujasite (Y zeolite) zeolites in nanostructured carbon matrixes. Y zeolites were prepared by the hydrothermal method from amorphous silica-alumina (ASA) gel using graphene oxide (GO) and carbon nanofiber (CNF) as carbon nanostructures. The synthesized samples were characterized by x-ray diffraction, field emission scanning electron microscope, atomic absorption spectroscopy and Brunauer–Emmett–Teller surface area analysis. The synthetic particles have almost identical morphology and uniform sizes while the particle sizes are large. The particles forming the sample prepared using CNF co-template have agglomerated and formed bulky masses. Each of the particles forming the mass has a smaller size and larger surface and volume than those obtained using graphene oxide co-template. The sample prepared using CNF co-template has smaller particle size and larger area and volume compared to that prepared using graphene oxide co-template.