METHOD FOR PRODUCING HIGH-TEMPERATURE CO SORBENTS Russian patent published in 2021 - IPC C04B35/57 B01J20/04 B01J20/30 

FIELD: composite materials.

SUBSTANCE: invention relates to the production of composite materials based on calcium oxide and zirconium dioxide and can be used to obtain high-temperature CO₂ sorbents for cleaning the exhaust gases of industrial enterprises from carbon dioxide. Disclosed is a method of obtaining a powder composite material using a zirconium-containing mineral raw material - baddeleyite concentrate including mixing calcium carbonate with baddeleyite concentrate in the ratio, wt%: baddeleyite concentrate - 11-27, calcium carbonate - 73-89, followed by grinding the mixture to a nanosized state in a bead mill in an aqueous medium using stabilized zirconia beads and heat treatment. As a result of heat treatment in a nitrogen atmosphere at a temperature of 800 °C, a high-temperature regenerating chemisorbent is obtained consisting of calcium oxide and calcium zirconate.

EFFECT: preservation of the sorption capacity of the material during high-cycle use.

3 cl, 2 dwg