Elution-extracting resin using amide compound as extracting agent and preparation method thereof

A technology for amide compounds and diamide compounds, applied in chemical instruments and methods, separation methods, liquid separation of solid adsorbents, etc., can solve the problems of poor repeatability and reproducibility, short service life, and large loss of extractant. , to achieve the effect of good extraction capacity, easy operation and high separation efficiency

Inactive Publication Date: 2008-03-12
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this method is to impregnate the TODGA extractant in SiO 2 On the microspheres, rather than wrapped in the pore structure of the carrier, so the loss of the extraction agent is large during rinsing, the service life is short, and the repeatability and reproducibility are not good

Method used

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  • Elution-extracting resin using amide compound as extracting agent and preparation method thereof
  • Elution-extracting resin using amide compound as extracting agent and preparation method thereof
  • Elution-extracting resin using amide compound as extracting agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] In a reaction vessel equipped with a mechanical stirrer and a condenser tube, first mix 8 parts of monomer styrene and 2 parts of crosslinking agent divinylbenzene evenly, then add benzoyl peroxide with a monomer amount of 1%, 4 parts N, N-dihexyl-heptanamide, 3 parts of kerosene and 2 parts of n-octanol, 2 parts of toluene and 5 parts of n-heptane, at room temperature, stir to form an oil phase; 10% gelatin, 2% calcium carbonate and 3% sodium dodecylbenzenesulfonate are added to deionized water that is 3 times the volume of the oil phase, dispersed while maintaining a stirring speed of 800r / min, and heated up React at 80°C for 10 hours, then cool down, wash with hot water at 50°C to remove unreacted monomers, dispersants and surfactants until the water is clear, then filter with suction, and dry at low temperature at 70°C to obtain white leaching resin particles. The particle size of the particles is 100-200 mesh.

Embodiment 2

[0056] In a reaction vessel equipped with a mechanical stirrer and a condenser, first mix 7 parts of monomer styrene and 3 parts of crosslinking agent divinylbenzene, and then add benzoyl peroxide with a monomer amount of 0.5%, 10 parts N, N, N', N'-tetraisobutyl diglycolamine, 1 part of kerosene, 2 parts of n-octane, 3 parts of toluene and 3 parts of n-heptane, stirred evenly at room temperature to form an oil phase; Will be 10% methylcellulose by oil phase weight, 10% calcium phosphate and 2% sodium lauryl sulfonate, join with the deionized water of oil phase volume 2 times, keep stirring speed Disperse under the condition of 500r / min, and heat up to 70°C for 16h reaction, then cool, wash after cooling, and filter with suction. The drying conditions are the same as in Example 1, omitting. The particle size of the particles is 80-200 mesh.

Embodiment 3

[0058] In a reaction vessel equipped with a mechanical stirrer and a condenser, first mix 7 parts of monomer styrene and 3 parts of crosslinking agent divinylbenzene, and then add azobisisobutyronitrile with a monomer amount of 1.5%, 10 Parts of N, N, N', N'-tetrabutyl diglycolamine, 1.5 parts of n-octane and 1.5 parts of chloroform, 10 parts of n-heptane, at room temperature, stir evenly to form an oil phase; 10% polyacrylic acid by weight, 20% magnesium carbonate and 5% sodium lauryl sulfate are added to deionized water with 5 times the volume of the oil phase, and dispersed under the condition of maintaining a stirring speed of 500r / min. The temperature was raised to 90° C. for 10 hours, and then cooled. After cooling, the mixture was washed and filtered with suction. The drying conditions were the same as those in Example 1, omitting. The particle size of the particles is 80-200 mesh.

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Abstract

The present invention discloses the solvent impregnated resin which uses amide compound as the extraction agent. The extraction agent is embedded in the polymer. The prevent invention is characterized in that the polymer is the styrene - divinylbenzene copolymer resin, and the extraction agent is the amide compound with the content of 20 percent to 60 percent. The solvent impregnated resin is ivory ball particle in appearance, with a particle diameter of 60 to 200 items a heap density of 0.53 to 0.94 gram per milliliter, and a specific surface area of 128 to 260 millimeters 2 / gram. The present invention also discloses the preparation method for the solvent impregnated resin. The solvent impregnated resin provided by the present invention has the advantages of low cost, less wastage of extraction agent, high column load, good mass transfer performance, easiness to be regenerated, long service life, ease use, good repeatability, and high reproducibility and so on. The solvent impregnated resin is of the characteristics of both particle and liquid in terms of extraction and cleaning. The present invention can be widely used in the separation and analysis of 90Sr in the plant and the animal samples, in the removal and callback of 90Sr during the treatment of nuclear fuel high-level radioactive liquid waste, as well as in the separation, purifying and callback of radioactive medical isotopes 90Sr.

Description

technical field [0001] The invention belongs to the technical field of Levextrel type extraction resin and its preparation method, and in particular relates to an extraction resin using an amide compound as an extraction agent and a preparation method thereof. Background technique [0002] The extraction resin is prepared by adsorbing the extractant onto a macroporous carrier. There are two ways to attach the extractant to the carrier: one is to mix the extractant with a volatile diluent and then impregnate it on an inert carrier; the other is to mix the extractant with a polymer monomer and polymerize and solidify The extractant is embedded in the polymer network. Levextrel resin is exactly the extraction resin embedded with extraction agent prepared by the second method. [0003] At present, the specific extraction agent of recognized strontium is a crown ether compound two-(tert-butylcyclohexyl)-18-crown-6 (Horwitz E.P.; Dietz M.L.; Fisher D.E.Solv.Extr.Ion Exch.1991,9(...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F212/36C08F2/44C08K5/20C08J9/04B01D15/10
Inventor 丁颂东杨堂张利
Owner SICHUAN UNIV
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