A method of producing a sorbent

 

(57) Abstract:

The invention relates to the field of gel copolymers with a high capacity to one - and divalent cations and with good reproducibility of properties. As starting compounds of antimony used oxytrichloride antimony, which zachisliaut 32% hydrochloric acid solution, injected sodium phosphate and metasilicate potassium deposition of the gel, washed gel appliciruut solution of bicarbonate and sodium chloride and transferred to the hydrogen form with concentrated nitric acid. Deviation in capacity compared with the prototype reduced by 2-3 times.

The invention relates to the field of gel copolymers with sorption properties and can be used in the purification of substances in medicine.

Known methods for producing sumanasekera sorbents (e.g., SU 1286267, 1987).

The closest adopted for the prototype, is a method of obtaining porous inorganic sorbents, including the introduction of a solution containing a compound of antimony, solutions of one-deputizing of sodium phosphate and sodium metasilicate with the deposition of the gel, it otryvnoi and subsequent microwave treatment (SU, 1156728 A, 1985).

Object of the invention s the reproducibility of the properties.

The technical result is achieved by the fact that as compounds of antimony used oxytrichloride antimony, pre zachisliaut 32% hydrochloric acid solution, as metasilicate use metasilicate potassium, and the washed gel implicit solution of bicarbonate and sodium chloride and transferred to the hydrogen form with concentrated nitric acid.

The method is as follows.

In the solution oxytrichloride antimony pour in 32% hydrochloric acid under stirring.

Dissolve metasilicate potassium by heating and stirring. Prepare for a solution adesemowo phosphate by heating and stirring.

Perform cooling solution oxytrichloride antimony before vysalivaniya crystals SbOCl3.

With the beginning of vysalivaniya in the solution is injected solutions of one-deputizing phosphate and metasilicate potassium. The resulting mass is poured into protiven. Over the next 12-18 hours is the formation of a gel.

Next, the gel is washed with distilled water until the pH of 0.9 to 1.0. This is followed by the application of the gel sorbent solution containing sodium bicarbonate (Na2CO3and sodium chloride.

Next, carry out the washing of the cation exchange resin from nitric acid and sodium nitrate followed by filtration and drying to a moisture content of not more than 20%.

The resulting product is a gel copolymer compounds antimony and silicon, effectively connecting one or two charging metal ions.

The method is confirmed by examples.

Example 1.

In the solution oxytrichloride antimony pour in 32% hydrochloric acid and stirred.

Dissolve metasilicate potassium by heating and stirring. Prepare a solution of one-deputizing phosphate.

Cool the solution oxytrichloride antimony before vysalivaniya his crystals.

With the beginning of vysalivaniya in the solution is injected solutions of one-deputizing phosphate and metasilicate potassium. The resulting mass is poured into protiven, where for the next 15 hours is the formation of a gel.

Then the gel is washed with distilled water to pH 1.0 and conduct the application of the gel sorbent solution containing sodium bicarbonate and sodium chloride. Next, the gel was filtered, dried, crushed, treated with concentrated nitric acid the number of sodium followed by filtration and drying to a moisture content of not more than 20%.

Total capacity

by Na+- 3.4 mg/EQ/year

in Ca+- 4,25 mg/EQ/year

Example 2.

In the solution oxytrichloride antimony pour in 32% hydrochloric acid and peremeshivayte.

Dissolve metasilicate potassium by heating and stirring. Prepare a solution of one-deputizing phosphate.

Cool the solution oxytrichloride antimony before vysalivaniya his crystals.

With the beginning of vysalivaniya in the solution is injected solutions of one-deputizing phosphate and metasilicate potassium. The resulting mass is poured into protiven, where in the next 18 hours, the formation of a gel.

Then the gel is washed with distilled water to pH 0.9 and conduct the application of the gel sorbent solution containing sodium bicarbonate and sodium chloride. Next, the gel was filtered, dried, crushed, treated with concentrated nitric acid, which is the translation of the cation exchanger in the hydrogen form. Then washed the cation exchange resin from nitric acid and sodium nitrate followed by filtration and drying to a moisture content of not more than 20%.

Total capacity

by Na+is - 3.45 mg/EQ/year

in Ca2+- 4,20 mg/EQ/year

Example varaut metasilicate potassium by heating and stirring. Prepare a solution of one-deputizing phosphate.

Cool the solution oxytrichloride antimony before vysalivaniya his crystals.

With the beginning of vysalivaniya in the solution is injected solutions of one-deputizing phosphate and metasilicate potassium. The resulting mass is poured into protiven, where over the next 12 hours is the formation of a gel.

Then the gel is washed with distilled water to pH 1.0 and conduct the application of the gel sorbent solution containing sodium bicarbonate and sodium chloride. Next, the gel was filtered, dried, crushed, treated with concentrated nitric acid, which is the translation of the cation exchanger in the hydrogen form. Then washed the cation exchange resin from nitric acid and sodium nitrate followed by filtration and drying to a moisture content of not more than 20%.

Total capacity

by Na+- to 3.35 mg/EQ/year

in Ca2+- 4,30 mg/EQ/year

From the presented examples show that the deviation of capacity in different batches of sorbent is less than 0.03 (Na+and 0.02 (Ca++), whereas in the method-prototype respectively 0.06 and 0.07 respectively.

A method of producing a sorbent, comprising introducing a solution containing the compound of Suri is Oh, characterized in that compounds of antimony used oxytrichloride antimony, pre zachisliaut 32% hydrochloric acid solution, as metasilicate use metasilicate potassium, and the washed gel appliciruut solution of bicarbonate and sodium chloride and transferred to the hydrogen form with concentrated nitric acid.

 

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FIELD: sorbents.

SUBSTANCE: invention relates to developing porous materials and adsorbents, including medicine-destination ones, as effective agents for hemo-, entero-, and vulneosorption, cosmetics, environment-oriented materials, enzyme and cell carriers, biologically active substances, and drugs. Alumina-based sorbent of invention is characterized by meso- and macroporous structure and contains modifying component: polyvinylpyrrolidone-silver complex with 0.05 to 0.3 wt % Ag.

EFFECT: increased adsorption capacity regarding toxins with different molecular weights and acquired bactericidal properties.

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