METHOD FOR OBTAINING A SOLUTION OF COLLOIDAL SILVER Russian patent published in 2021 - IPC C22B11/00 C01G5/00 B22F9/24 B01J13/00 

FIELD: chemistry.

SUBSTANCE: invention relates to the synthesis of colloidal solutions of precious metals, concerns a method for obtaining a colloidal solution of silver using lignosulfonates (LST). A colloidal silver solution is obtained by mixing solutions of silver nitrate, glucose and lignosulfonate as a stabilizer, followed by alkalinization with ammonia water, followed by heating the resulting mixture. In this case, the consumption of lignosulfonate is 0.4-9.3 g per 1 g of silver(I), the consumption of glucose for the reaction is 1.7-25.0 g per 1 g of silver, and the consumption of ammonia water for alkalizing the reaction mixture is 6.1-45.8 g per 1 g of silver(I). Heating is carried out in a boiling water bath for 2-5 minutes or in a microwave oven for 45-90 seconds.

EFFECT: invention makes it possible to increase the efficiency of stabilization of a colloidal silver solution by using LST as a stabilizer while reducing the duration of synthesis of colloidal silver.

1 cl, 1 dwg, 2 tbl, 32 ex