METHOD OF PRODUCING COBALT-INDIUM LAYERED DOUBLE HYDROXIDE Russian patent published in 2025 - IPC C01G51/00 C01G15/00 C01B13/36 

FIELD: chemistry.

SUBSTANCE: invention relates to production of a compound of formula [Co₆In₂(OH)₁₆]CO₃⋅4H₂O, which can be used as an inorganic analogue of a natural peroxidase enzyme in enzymatic catalysis in chemical, pharmaceutical, textile and agricultural industries. Method of producing cobalt-indium layered double hydroxide involves mechanochemical synthesis followed by hydrothermal treatment. At the stage of mechanochemical synthesis mixed are cobalt (II) nitrate hexahydrate Co(NO₃)₂⋅6H₂O, indium (III) 4,5-hydrate In(NO₃)₃⋅4.5H₂O, sodium carbonate and sodium hydroxide, ground to obtain a viscous homogeneous paste, which is washed with distilled water into a fluoroplastic cup of a stainless steel hydrothermal synthesis vessel. Maintained in a dry-heat oven at temperature of 98 °C. At the end of the day, 0.1 M Na₂CO₃ solution is added to the reaction mixture at 2 parts per 1 part of the reaction mixture and kept in a dry-heat oven for two days at temperature of 98 °C. Mixture is then held in a cooling vessel for a day. Obtained powder material is then separated from the mother solution by centrifugation, washed with distilled water until the medium is neutral and dried at temperature of 50 °C in a thermostat for two days.

EFFECT: invention enables to obtain, without using acetone, a synthetic hydrotalcite-like material characterized by single-phase and good crystallisation.

1 cl, 2 dwg, 1 ex