A method of obtaining a complexing ion exchanger

 

(57) Abstract:

Usage: synthesis of complexing ion exchanger with high sorption indicators for scandium. The inventive phosphorylation with phosphorus pentachloride klimatisierung and laminirovannogo diethanolamine or dimethylethanolamine copolymer of styrene with divinylbenzene.

The invention relates to a method for complexing resins and can be used in hydrometallurgy of non-ferrous and rare metals.

A method of obtaining complexing ion exchangers sottoportego groups on a polystyrene basis.

Closest to the claimed is a method of producing the resin, which consists in the aminating monoethanolamine klimatisierung copolymer of styrene with divinylbenzene, followed by phosphorylation with an aqueous solution of phosphoric acid.

The aim of the invention is the synthesis of complexing ion exchanger with high sorption indices in relation to the scandium from solutions of low concentration.

This goal is achieved by the fact that aminirovanie diethanolamine or dimethylethanolamine klimatisierung coolimba, in the reaction mass, which is a pulp petaluridae phosphorus in an inert solvent, serves aminirovanie diethanolamine or dimethylethanolamine klimatisierung copolymer of styrene with divinylbenzene. The phosphorylation is carried out at a temperature of 20-25aboutC for 24 h, and then the phosphorylated product is treated with concentrated hydrochloric acid and washed with water.

P R I m e R 1. To 100 g klimatisierung macroporous copolymer of styrene and divinylbenzene was added 400 ml of diethanolamine and stirred for 10 h at 100aboutWith, aminirovanie product is expressed from the mother liquor, washed with 5% hydrochloric acid solution, water, dried.

In a three-neck flask equipped with a fridge, mixer, to the reaction mass, which is a slurry of 200 g petaluridae phosphorus in an inert solvent, add 100 g laminirovannogo product, stirred for 24 h without heating. Press liquor, phosphorylated product is treated with concentrated hydrochloric acid and washed with water. The resulting sorbent contains 6,72% R.

P R I m m e R 2. To 100 g klimatisierung macroporous copolymer of styrene and divinylbenzene was added 400 ml DIMET what olaney acid, water, dried.

Phosphorylation carried out as in example 1. The resulting sorbent contains 6,18% R.

P R I m e R 3. Sorption of scandium was performed from model solutions containing scandium from 2.8 to 0.33 mg/l at pH of 1.4. The ratio of the mass of the resin (g) to the volume of the solution is 1: 5. The contact time 24 h

Data on sorption of scandium in the table. (56) USSR Author's certificate N 339555, CL 08 J 5/20, 1979.

USSR author's certificate N 322333, CL 08 J 5/20, 1979.

A method of OBTAINING a COMPLEXING ion exchanger by aminating ethanolamine klimatisierung copolymer of styrene with divinylbenzene, followed by phosphorylation, characterized in that as ethanolamine ispolzuut diethanolamine or dimethylethanolamine and phosphorylation carried out with phosphorus pentachloride.

 

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-CH-CH2--CHwhere K = 34,1 to 58.6, L = 30,7 - 45,5, m = 2,1 - 5,1, n = 1,9 - 4,6 mol

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-CH-CH2--CHwhere K = 34,1 to 58.6, L = 30,7 - 45,5, m = 2,1 - 5,1, n = 1,9 - 4,6 mol

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32 cl, 35 dwg, 4 tbl, 23 ex

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11 cl, 6 dwg, 2 tbl, 26 ex

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SUBSTANCE: invention relates to a method for preparing polyhalide strong-basic anion-exchange resins of gel and macroporous structure designated for disinfection of water in closed ecological objects, domestic drinking water and water from non-checked sources. Polyhalide anion-exchange resins is prepared from strong-basic quaternary ammonium anion-exchange resins in chloride form by their iodination with J2 solution in KJ at stirring, thermostatic control and washing out. Iodination is carried out with triiodide solution on conditioned strong-basic anion-exchange resins in chloride form in the content of strong-basic groups 80%, not less, in the mole ratio anion-exchange resin : triiodide = 1.0:(1.1-1.5). Ready product is kept at 20-55°C additionally. Invention provides preparing polyhalide anion-exchange resins characterizing by high resource in water disinfection and in simultaneous reducing iodine release in disinfecting water in retention of high disinfecting indices.

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1 tbl, 8 ex

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2 cl, 3 tbl, 2 ex

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1 cl, 4 ex, 1 tbl

FIELD: chemistry.

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4 ex, 1 tbl

Deodorant particle // 2430117

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11 cl, 5 dwg, 10 tbl, 38 ex

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1 cl, 3 tbl, 3 ex

FIELD: chemistry.

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6 cl, 8 dwg, 2 tbl, 5 ex

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4 cl, 1 tbl, 2 ex

FIELD: metallurgy.

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2 cl, 3 ex

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9 cl, 10 ex

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EFFECT: obtainment of non-toxic biologically degradable and environmentally safe films with enhanced fire and heat resistance.

1 tbl, 3 ex

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