Silica-rich carrier, catalyzer for heterogeneous reactions and method for the production thereof

摘要

A silica-rich support and a catalyst containing the silica-rich support and a catalytic component. The support has a specific structure characterized by a set of claimed physicochemical properties: in the ²⁹Si MAS NMR spectrum the state of silicon is characterized by the presence of lines with chemical shifts -100±3 ppm (line Q³) and -110±3 ppm (line Q⁴), with the ratio of the integral intensities of the lines Q³/Q⁴ of from 0.7 to 1.2 (FIG. 1 ); in the IR spectrum there is an absorption band of hydroxyl groups with the wave number 3620-3650 cm^-1 and half-width 65-75 cm^-1 (FIG. 2 ); the carrier has a specific surface area, as measured by the BET techniques from the thermal desorption of argon, S_AR=0.5-30 m²/g and the surface, as measured by alkali titration techniques, S_Na=10-250 m²/g, with S_Na/S_Ar=5-30.