Material with hierarchical porosity and organized in area of microporosity and mesoporosity comprises two spherical elementary particles, where at least one of the spherical particles comprises a mesostructured silicon oxide based matrix

摘要

Material with hierarchical porosity and organized in the area of a microporosity and mesoporosity comprises at least two spherical elementary particles, where at least one of the spherical particles comprise a mesostructured silicon oxide based matrix having mesoporous diameter of 1.5-30 nm, and having microporous and crystalline walls thickness of 1-60 nm, and the spherical elementary particles have maximum diameter of 200 microns. Independent claims are included for the preparation of the material comprising: either preparing a clear solution containing precursor elements of zeolite entities, such as structuring agent, at least a silica precursor and optionally at least a precursor of an element X comprising aluminum, iron, boron, indium and gallium, or preparing at least one silica precursor and optionally at least a precursor of the element X, a solution containing zeolite nanocrystal having maximum nanometry of 60 nm, from at least one structuring agent to obtain a colloidal solution, which are dispersed nanocrystals, or redispersing zeolite crystal in solution to obtain colloidal solution of zeolite nanocrystal having maximum nanometry of 60 nm; mixing at least one surfactant, at least the colloidal solution and the clear solution into a solution, where the volume ratio of the inorganic to organic material is 0.26-4; spraying the solution by aerosol obtained in the mixing step for the formation of spherical droplets, drying the droplets; and eliminating the structuring agent and the surfactant to obtain the crystallized material with hierarchized porosity and organized in the area of microporosity and mesoporosity.