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Amino functionalized ionic liquid/hydrotalcite-like compound composite material, and preparation method and application thereof

An amino-functionalized, ionic liquid technology, used in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc.

Active Publication Date: 2014-12-10
日照经济技术开发区客商服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, the preparation of amino-functionalized ionic liquids and hydrotalcite-like composites by co-precipitation method and its application in organic pollutants have not been mentioned in the literature. This work will further expand the application of hydrotalcite-like in the environmental field. of great significance

Method used

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  • Amino functionalized ionic liquid/hydrotalcite-like compound composite material, and preparation method and application thereof
  • Amino functionalized ionic liquid/hydrotalcite-like compound composite material, and preparation method and application thereof
  • Amino functionalized ionic liquid/hydrotalcite-like compound composite material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (a) Preparation of amino-functionalized ionic liquid 1-methyl-3-aminoethylimidazolium tetrafluoroborate

[0034] Under ice-bath conditions, pipette 20 mL of N-methylimidazole (10.3 g, 0.25 mol) into a round-bottomed flask, and add equimolar 2-bromoethylamine hydrobromide (51.22 g, 0.25 mol) under constant stirring It was slowly added dropwise into absolute ethanol (20 mL) equal to the volume of N-methylimidazole, and the reaction solution was stirred at 50° C. for 24 hours, and protected by nitrogen gas during the reaction. After the reaction, remove the solvent and unreacted volatile substances by rotary evaporation, dissolve the product with a small amount of water, then add 250 mL of 1 mol / L potassium hydroxide solution to reduce the protected amino group, and remove most of the water in the resulting solution by distillation under reduced pressure Then vacuum-dry at 60°C to constant weight, dissolve the product with ethanol-tetrahydrofuran mixed solvent with a volum...

Embodiment 2

[0038] (a) Preparation of amino-functionalized ionic liquid 1-methyl-3-aminoethylimidazolium tetrafluoroborate

[0039] Adopt the method and the condition synthesis of step (a) among the embodiment 1;

[0040] (b) Preparation of amino-functionalized ionic liquid / hydrotalcite-like composites

[0041] Divalent metal salt Zn(NO 3 ) 2 and trivalent metal salt Al(NO 3 ) 3 Prepare a mixed salt solution at a molar ratio of 2:1, the total metal ion concentration is 0.6 mol / L, and then the ionic liquid is 1-methyl-3-aminoethylimidazolium tetrafluoroborate and divalent metal salt Zn(NO 3 ) 2 Add the molar ratio of 0.5:2 into the mixed salt solution, titrate the above mixed solution and the sodium hydroxide solution with a molar concentration of 2 mol / L at the same time, control the pH between 9.0 and 10.0, stir vigorously, and age at 80 °C for 8 Hour. The obtained slurry was suction-filtered, the filter cake was washed 4 times with distilled water, and dried at 60° C. for 24 hou...

Embodiment 3

[0043] (a) Preparation of amino-functionalized ionic liquid 1-methyl-3-aminoethylimidazolium tetrafluoroborate

[0044] Adopt the method and the condition synthesis of step (a) among the embodiment 1;

[0045] (b) Preparation of amino-functionalized ionic liquid / hydrotalcite-like composites

[0046] Divalent metal salt Zn(NO 3 ) 2 and trivalent metal salt Al(NO 3 ) 3 Prepare a mixed salt solution at a molar ratio of 2:1, the total metal ion concentration is 0.6 mol / L, and then the ionic liquid is 1-methyl-3-aminoethylimidazolium tetrafluoroborate and divalent metal salt Zn(NO 3 ) 2 The molar ratio of 0.8:2 was added to the mixed salt solution, and the above mixed solution and the ammonia solution with a molar concentration of 4 mol / L were titrated simultaneously to control the pH between 9.0 and 10.0, vigorously stirred, and aged at 50°C for 18 hours. The obtained slurry was suction-filtered, the filter cake was washed 4 times with distilled water, and dried at 60° C. f...

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Abstract

The invention discloses an amino functionalized ionic liquid / hydrotalcite-like compound composite material, and a preparation method and an application thereof. The preparation method comprises: firstly synthesizing an amino functionalized ionic liquid, then taking amino functionalized ionic liquid with different molar masses, employing a coprecipitation method to load the ionic liquid on the surface of the hydrotalcite-like compound, to prepare the amino functionalized ionic liquid / hydrotalcite-like compound composite material with a lamellar structure. The prepared organic-inorganic composite material has the structure and performance advantages of the functionalized ionic liquid and the hydrotalcite-like compound; the composite material, as an absorbent, shows good adsorption removal capability on pollutions such as o-chlorophenol , m-chlorophenol or p-chlorophenol in water, and has substantially better adsorptivity performance than the hydrotalcite-like compound; and the synergy advantage of the amino functionalized ionic liquid and the hydrotalcite-like compound is given a full play.

Description

technical field [0001] The invention relates to an amino functionalized ionic liquid / hydrotalcite-like composite material; the invention also relates to a preparation method of the composite material and its application in removing pollutants in water bodies. Background technique [0002] Hydrotalcite-like (abbreviated as LDH) is a kind of two-dimensional nano-anionic clay, and its general formula can be expressed as [M 1-x 2+ m x 3+ (OH) 2 ] x+ (A n- ) x / n mH 2 O, where M 2+ Refers to divalent metal cations, M 3+ Refers to trivalent metal cations, x is M 2+ with M 3+ The molar ratio of A n- It is an anion that can exist stably between layers and has a hydrotalcite layered structure. Because of its advantages of adjustable sheet element composition and charge density, controllable interlayer guest molecules, crystal size, and low biological toxicity, it has been used in organic catalysis, Polymer additives, biomedicine, environmental protection and many other fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/30C02F1/28C02F101/36
Inventor 詹天荣侯万国徐 洁王新军
Owner 日照经济技术开发区客商服务有限公司
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