Method for preparing embedding ion liquid and neutral phosphor (phosphine) extractant composite material and its use

An ionic liquid and composite material technology, which is applied in the field of preparation and application of composite materials embedding ionic liquid and neutral phosphorus (phosphine) type extractant, can solve the problems of slow performance, difficult phase separation, complex synthesis process, etc. To achieve the effect of easy reaction process, shortened gel time and uniform material composition

Inactive Publication Date: 2007-03-28
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

(2) Ionic liquids generally have a high viscosity, so the mass transfer rate is slow in the liquid-liquid extraction process, resulting in long equilibration time, difficult phase separation, and entrainment loss of ionic liquids with the aqueous phase.
However, studies have shown that the synthesis process of this type of resin is complex and not suitable for all extractants, and the kinetic (mass transfer) performance of the resin is relatively slow during the extraction process, and the extractant diffuses from the resin step by step

Method used

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  • Method for preparing embedding ion liquid and neutral phosphor (phosphine) extractant composite material and its use
  • Method for preparing embedding ion liquid and neutral phosphor (phosphine) extractant composite material and its use
  • Method for preparing embedding ion liquid and neutral phosphor (phosphine) extractant composite material and its use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: [C 8 mim][PF 6 ]Synthesis

[0039] [C 8 mim][PF 6 ], first synthesize [C 8 mim]Cl (1-octane-3-methylimidazolium chloride) compound. N-methylimidazole and chlorooctane were purified by distillation respectively, and then added to a three-necked container with a condenser in a molar ratio of 1:1, and heated at 70°C for 48-72 hours under stirring until Two phases are formed, and the upper phase is poured out, the lower phase is washed 3 times with ethyl acetate, and the remaining ethyl acetate is removed by distillation under reduced pressure to obtain [C 8 mim]Cl, >89% yield.

[0040] The mass percentage concentration is 60% HPF 6 aqueous solution and the newly synthesized [C 8 [C 8 mim][PF 6 ], washed with an equal volume of deionized water until the pH was nearly neutral, and the yield was 66%. [C 8 mim][PF 6 ] H NMR spectrum: δ0.86(t), 1.26(t), 2.06(m), 2.50(m), 3.00(s), 4.14(t), 7.69(t), 7.76(t), 9.09 (s). 13 CNMR spectrum: δ13.84, 22.12, ...

Embodiment 2

[0041] Embodiment 2: preparation does not contain the silica gel material of ionic liquid and neutral phosphorus (phosphine) class extraction agent

[0042] Mix 50ml tetraethyl orthosilicate, 15ml deionized water and 5ml 0.05mol l -1 Formic acid was mixed and magnetically stirred at 17°C for 20 hours. After drying, the dry gel was taken out, washed with distilled water until the pH value was 6.0, and vacuum-dried at 40° C. for 12 hours to obtain a silica gel material A free of ionic liquid and neutral phosphorus (phosphine) extractant.

Embodiment 3

[0043] Example 3: Preparation of a composite material embedding Cyanex923

[0044] Mix 25ml tetraethyl orthosilicate, 10ml deionized water and 2.5ml 0.05mol l -1 Formic acid was mixed and stirred magnetically at 22°C for 12 hours. Add 0.21ml of Cyanex923 into the system, and stir magnetically at 22°C until gelling. After drying, the xerogel was taken out, washed with distilled water until the pH value was 5.8, and dried under vacuum at 40°C for 12 hours to obtain composite material B embedded with Cyanex923.

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Abstract

The invention relates to making method for compound material of entrapment iron liquid and neutrality phosphor extraction agent. The compound material is made up from fixing iron liquid and neutrality phosphor extraction agent into silicons, titania or alumna inorganic network to form a new type organic-inorganic hybridization material. And the iron liquid is 1, 3-dialkyl imidazole salt that the anion section is fluoboric acid radical and fluorophosphoric acid radical. The neutrality phosphor extraction agent is the compound that the three hydroxyls in orthophosphoric acid molecule are fully be replaced or esterified. The method could shorten reaction time. It could be used to effectively separate yttrium and heavy rare earths, and could be recycled.

Description

technical field [0001] The invention relates to a preparation method and application of a composite material embedding an ionic liquid and a neutral phosphorus (phosphine) extractant. technical background [0002] The composite material embedding ionic liquid and neutral phosphorus (phosphine) extractant is a new kind of composite material formed by introducing ionic liquid and neutral phosphorus (phosphine) extractant into the inorganic network of silicon oxide, titanium oxide or aluminum oxide. hybrid materials. Ionic liquids are organic liquid substances composed entirely of ions at room temperature and adjacent temperatures. The neutral phosphorus (phosphine) extractant is fixed in a solid inorganic carrier by a sol-gel method after being dissolved in an ionic liquid. The main principle of using this method to prepare organic-inorganic composite materials is to incorporate organic functional molecules or polymers into the inorganic network to achieve functionalization....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/38B01D11/00C22B59/00
CPCY02P10/20
Inventor 陈继刘英辉孙晓琦
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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