METHOD OF PRODUCING CERAMIC HIGHLY POROUS BLOCK-CELLULAR MATERIALS Russian patent published in 2016 - IPC C04B38/06 C04B41/87 

FIELD: ceramic industry.

SUBSTANCE: invention relates to chemical engineering of ceramic highly porous cellular materials - catalyst supports, sorbents and other mass exchange devices and is intended for use in chemical, petrochemical, nuclear industries, metallurgy, energy and transport, as well as to solve environmental problems of cleaning gas and liquid media from hazardous substances. Method for producing highly porous ceramic block of cellular material includes impregnating a polyurethane matrix mesh slip structure, consisting of excipient - electrofusion corundum, particulate powder high-alumina porcelain mass and hardening additives, drying, calcination and impregnation coating method followed by calcination of active composition. Active composition is applied as a slurry with a mass ratio of solid to liquid phase of 40÷50/60÷50%, solid phase is prepared by mixing with kaolin or zeolite NTSVM NH₄CVM pentasil type at a ratio of 10÷19/90÷81 wt%, and liquid phase is distilled water. After application of each layer of active composition material is dried at 80÷90 °C for 2÷8 hours, and after application of last layer is heat treated in medium of water vapour with flow rate of 100-400 g/h at a temperature of 760÷800 °C for not less than 1 hour.

EFFECT: technical result of invention is increase in specific surface area of hydrophobic zeolite active layer to 420-460 m²/g and increased sorption capacity for organic compounds (10/100-12/100 g/cm³ for toluene vapour) while minimising sorption capacity for water (1/100 g/cm³) under dynamic conditions at p/p_s= 1/10, based on active layer, that allows use of highly porous materials obtained in a wet environment.

1 cl, 3 ex