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AssigneeZakrytoe Akcionernoe Obshhestvo " Aksion- Redkie I Dragocennye Metally"
InventorsVitaliy Aleksandrovich Tret'jakov, Dmitriy Alekseevich Kondruckiy, Gadzhi Rabadanovich Gadzhiev, Aleksandr Faddeevich Bobrov, Aleksey Gennad'evich Nesterov
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A method of production of sorbents involving acylation of a macroporous styrene-divinylbenzene copolymer in the presence of the Friedel-Crafts catalyst—aluminum chloride. The acylation reaction is carried out using acetyl chloride in a dichloroethane solvent at boiling the solution. This is followed by phosphorylation of the obtained acylated copolymer with phosphorus trichloride at room temperature; the product is hydrolyzed with water, washed and dried. The technical result consists in production of a complexing adsorbent highly selective for scandium and simplification of the production process.
A method of producing a sorbent for selective extraction of scandium ions, including the step of acylating a styrene-divinylbenzene copolymer with acetyl chloride in dichloroethane solution in the presence of anhydrous aluminum chloride, washing, drying, the step of phosphorylation of the acylation product with phosphorus trichloride, the step of hydrolysis with ice water, final washing of the target product characterized in that the starting copolymer is a macroporous styrene-divinylbenzene copolymer, the acylation is carried out at the boiling point of acetyl chloride solution, phosphorylation is carried out by preliminary holding the reaction mass at room temperature followed by introduction of glacial acetic acid in it with an additional holding of the reaction mass under stirring.
Dependencies are inferred from the claim text.