Crosslinked polystyrene-polypropenyl hydroximic acid inter-penetrating network resin and preparation method and application thereof

A technology of polypropylene-based hydroxamic acid and cross-linked polystyrene, which is applied in chemical instruments and methods, ion exchange, and other chemical processes, and can solve problems such as poor mechanical properties, restrictions on the application of adsorption and separation technology, and small adsorption capacity

Active Publication Date: 2015-09-02
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the disadvantages of poor mechanical properties, low stability, and small adsorption capacity of the hydroxamic acid polymer resin in the prior art, and the fact that the adsorption capacity of ordinary chelating resins to different metal elements is not much different, it is difficult to achieve the selectivity of rare earth elements Defects such as separation have

Method used

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  • Crosslinked polystyrene-polypropenyl hydroximic acid inter-penetrating network resin and preparation method and application thereof
  • Crosslinked polystyrene-polypropenyl hydroximic acid inter-penetrating network resin and preparation method and application thereof
  • Crosslinked polystyrene-polypropenyl hydroximic acid inter-penetrating network resin and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Preparation of spherical crosslinked polystyrene macroporous resin:

[0072] Add 10 parts of styrene, 1 part of divinylbenzene, and 0.1 part of benzoyl peroxide into the reactor, add 6.5 parts of liquid paraffin, 6.5 parts of toluene and 0.2 parts of polyvinyl alcohol under stirring, and 65 parts of water as a solvent to control the reaction The temperature was 80°C, reacted for 4 hours, then raised the temperature to 90°C, reacted for 2 hours, filtered, extracted with petroleum ether to remove the porogen, and dried to obtain a white spherical cross-linked polystyrene macroporous resin (referred to as PS resin).

[0073] The specific surface area and pore size test results of PS resin are as follows: figure 1 , figure 2 As shown, the average particle size of the resin is 0.89mm, and the specific surface area is 141.1m 2 / g, the average pore diameter is 8.57nm, and the pore volume is 0.5472cm 3 / g.

Embodiment 2

[0075] Preparation of crosslinked polystyrene-polypropylene hydroxamic acid interpenetrating network resin:

[0076] Add 7.64 parts of hydroxylamine hydrochloride with a purity of 99% and 9.6 parts of sodium hydroxide with a purity of 99% into the reactor, add 43.5 parts of methanol water with a mass ratio of 1:4 as a solvent, and add 17.8 parts of methyl acrylate under stirring, Control the temperature at 35°C, react for 4 hours, acidify, filter, rotary evaporate, and purify to obtain a reddish-brown viscous liquid. Then add 5 parts of swollen PS resin (prepared in Example 1) into the reactor and stir and impregnate with 5 parts of propenyl hydroxamic acid and 0.8 part of divinylbenzene for 2 hours, filter, take out the resin, and mix the resin with 0.6 Add 50 parts of benzoyl peroxide to the above-mentioned reactor, add 50 parts of water containing 0.15 parts of polyvinyl alcohol as a solvent, control the pH of the solution to 6, heat up to 85 ° C for 2 hours, and continue t...

Embodiment 3

[0079] Preparation of cross-linked polystyrene-lanthanum ion imprinted polypropylene hydroxamic acid interpenetrating network resin:

[0080] Add 7.64 parts of hydroxylamine hydrochloride with a purity of 99% and 9.6 parts of sodium hydroxide with a purity of 99% into the reactor, add 43.5 parts of methanol water with a mass ratio of 1:4 as a solvent, and add 17.8 parts of methyl acrylate under stirring, Control the temperature at 35°C, react for 4 hours, acidify, filter, rotary evaporate, and purify to obtain a reddish-brown viscous liquid. 8.7 parts of propenyl hydroxamic acid and 16.25 parts of lanthanum nitrate were reacted in a solution with a pH value of 4 to generate propenyl hydroxamic acid assembled with lanthanum ions. Then add 5 parts of swollen PS resin (prepared in Example 1) into the reactor, stir and impregnate with 5 parts of propenylhydroxamic acid and 0.8 part of divinylbenzene assembled with lanthanum ions for 2 hours, filter, and take out the resin , add r...

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Abstract

The invention discloses crosslinked polystyrene-polypropenyl hydroximic acid inter-penetrating network resin and a preparation method and application thereof. The resin is formed by polypropenyl hydroxamic acid or polypropenyl hydroxamic acid with a rare earth metal ionic imprint penetrating through spherical crosslinked polystyrene macroporous resin holes. The preparation method comprises the following steps: firstly preparing the spherical crosslinked polystyrene macroporous resin; then preparing the polypropenyl hydroxamic acid or polypropenyl hydroxamic acid with the rare earth metal ionic imprint in the spherical crosslinked polystyrene macroporous resin holes by virtue of an in-situ polymerization method to form a double network inter-penetrating polymer network structure. The preparation method of the crosslinked polystyrene-polypropenyl hydroximic acid inter-penetrating network resin disclosed by the invention has the advantages of being simple to operate, short in production period, low in production cost, high in reaction yield and the like. The prepared resin can be used for separating rare earth metal ions enriched in a solution and can be particularly used for efficiently and selectively separating target rare earth metal ions in the mixed rare earth metal ion solution.

Description

technical field [0001] The invention relates to a cross-linked polystyrene-polypropylene hydroxamic acid interpenetrating network resin and a preparation method and application thereof, belonging to the technical fields of chemical industry and hydrometallurgy. Background technique [0002] Rare earth elements have excellent properties in light, electricity, magnetism, superconductivity, and catalytic activity, and have become irreplaceable high-tech and military strategic resources. However, there are many rare earth co-associated deposits, complex mineral composition, various types of rare earth elements, and similar physical and chemical properties, which make the rare earth dressing and smelting process complicated and the utilization rate low. Therefore, the research on the efficient enrichment and separation technology of rare earth elements has become a research hotspot of researchers at home and abroad in recent years. [0003] At present, there have been a large nu...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F212/36C08J9/26C08F220/58C08F230/04B01J20/26B01J20/30B01D15/08
Inventor 王帅王晴曹晓燕钟宏刘广义曹占芳
Owner CENT SOUTH UNIV
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