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Polyionic liquid@metal organic framework composite material xPILs@MIL-101, and preparation method and application thereof

A metal organic framework, polyionic liquid technology, applied in ion exchange, ion exchange regeneration, chemical instruments and methods, etc., can solve the problems of complex catalyst recovery process, hinder industrial application, low use efficiency, etc. The effect of recycling performance, fast adsorption speed and low cost

Inactive Publication Date: 2019-11-26
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As a "green solvent", ionic liquid has the characteristics of low vapor pressure, low melting point, designability, recyclability, and high stability. However, in the reaction system, ionic liquid is used as a catalyst with complicated recovery process, high viscosity, and as a solvent or catalyst. Relatively low efficiency severely hampers their industrial application

Method used

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  • Polyionic liquid@metal organic framework composite material xPILs@MIL-101, and preparation method and application thereof
  • Polyionic liquid@metal organic framework composite material xPILs@MIL-101, and preparation method and application thereof
  • Polyionic liquid@metal organic framework composite material xPILs@MIL-101, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1 Preparation of 0.075PILs@MIL-101 composite material

[0042] 1) Synthesis of imidazole ionic liquid: Take 4.71g of N-vinylimidazole and 4.95g of 1,2-dichloroethane into a 100mL single-necked flask, then add 40mL of acetonitrile and mix well, and react at 70°C for 24h to obtain a white solid. Washing, purifying, vacuum-drying obtains intermediate product imidazoles ionic liquid [C 2 Vmir] [Cl].

[0043] 2) Synthesis of MIL-101: 3.2g Cr(NO 3 ) 3 9H 2 O. 1.32g of terephthalic acid, 2.20mL of glacial acetic acid and 40mL of deionized water were stirred at room temperature for 30min, and transferred to a reaction kettle. Reacted at 200°C for 9 hours to obtain a blue-green solid, which was washed, purified, and dried in vacuo to obtain the intermediate product MIL-101.

[0044] 3) Synthesis of 0.075PILs@MIL-101 composite material: 150mg MIL-101, 75mg[C 2 -Vmir][Cl] and 25mg DVB, 2mg AIBN, 3mL ethanol in a mortar, grind for 30min. Transfer the ground powder to a...

Embodiment 2

[0045] Example 2 Preparation of 0.15PILs@MIL-101 composite material

[0046] Step 1), step 2) are the same as embodiment 1.

[0047] 3) Synthesis of 0.15PILs@MIL-101 composite material: 150mg MIL-101, 150mg[C 2 -Vmir][Cl] and 50mg DVB, 4mg AIBN, 3mL ethanol in a mortar, grind for 30min. Transfer the ground powder to a 50 mL round bottom flask, N 2 Heated to 70°C under protection and reacted for 24h. The resulting product was collected, washed, and vacuum-dried to obtain 0.15PILs@MIL-101.

Embodiment 3

[0048] Example 3 Preparation of 0.3PILs@MIL-101 composite material

[0049] Step 1), step 2) are the same as embodiment 1.

[0050] 3) Synthesis of 0.3PILs@MIL-101 composite material: 150mg MIL-101, 300mg[C 2 -Vmir][Cl] and 98mg DVB, 8mg AIBN, 3mL ethanol in a mortar, grind for 30min. Transfer the ground powder to a 50 mL round bottom flask, N 2 Heated to 70°C under protection and reacted for 24h. The resulting product was collected, washed, and vacuum-dried to obtain 0.3PILs@MIL-101.

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Abstract

The invention belongs to the technical field of scattered metal adsorbent synthesis, and particularly relates to a polyionic liquid@metal organic framework composite material xPILs@MIL-101. The xPILs@MIL-101 is synthesized by taking imidazole ionic liquid[C<2>Vmir][Cl] as a monomer, 2,2-azobisisobutyronitrile AIBN as a cross-linking agent, divinylbenzene DVB as a basic framework and MIL-101 as anadsorption matrix material through reaction, wherein x is equal to 0.075, 0.15, 0.3, 0.4, 0.5 or 0.6. The material provided by the invention is used for adsorption of Re (VII) in water. The preparation method of the adsorbent is simple and safe, cost is low, separation and enrichment efficiency is high, and Re (VII) can be selectively adsorbed from coexisting ion solutions of Cu (II), Fe (II), Zn(II), Mn (II) and the like.

Description

technical field [0001] The invention belongs to the technical field of scattered metal adsorbents, and in particular relates to an xPILs@MIL-101 composite material adsorbent which selectively adsorbs rhenium and its preparation method and application. Background technique [0002] Scattered metals (RSE) can also be called rare dispersed metals, in which rhenium is a VIIB element, and is a high-strength, high-melting point rare refractory precious metal. The content of rhenium in nature is very low, and its content in the earth's crust is only 1×10 -7 %. Rhenium not only has good plasticity, mechanical properties and creep resistance, but also has the advantages of anti-wear and anti-corrosion. Due to the special properties of rhenium and its alloys, it is widely used in modern high-tech fields such as national defense, aviation, aerospace, nuclear energy and electronic industries, and is one of the most important new materials. [0003] At present, the methods for extract...

Claims

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Application Information

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IPC IPC(8): B01J20/26C08G83/00C22B61/00B01D15/08B01J20/30
CPCB01D15/08B01J20/226B01J20/262C08G83/008C22B61/00
Inventor 娄振宁吴子玉黄孟楠阚丽欣熊英单炜军
Owner LIAONING UNIVERSITY
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