Bivalent cation magnetic ionic liquids and preparation method thereof

A magnetic ionic liquid, divalent cation technology, applied in magnetic liquids, organic chemistry and other directions, can solve the problems of single structure, uncontrollable magnetism, weak magnetism, etc., to achieve the effect of promoting application and solving uncontrollable magnetism

Active Publication Date: 2011-08-31
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application and development of magnetic ionic liquids have been greatly restricted due to their weak magnetism, single structure, and uncontrollable magnetism.

Method used

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  • Bivalent cation magnetic ionic liquids and preparation method thereof
  • Bivalent cation magnetic ionic liquids and preparation method thereof
  • Bivalent cation magnetic ionic liquids and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Synthesis and characterization of:

[0021] (1) Slowly dissolve 8 g (0.0211 mol) of dysprosium trioxide in 20 g of 70% perchloric acid aqueous solution, stir and react at room temperature for 12 hours, remove water by rotary evaporation, and dry in vacuum for 48 hours to obtain Dy(ClO 4 ) 3 ·6H 2 O.

[0022] (2) Weigh 10 g (0.0532 mol) of 1,2-dibromoethane and 13.1011 g methylimidazole (0.1596 mol), place them in a single-necked flask, stir vigorously, and control the temperature at 70 ° C. After 24 hours of reaction, a large amount of White powder is formed, after cooling at low temperature, filter, and the filter cake is washed with 3×20ml acetone, and vacuum-dried for 24 hours to obtain a white powder product, [C 2 (mim) 2 ]Br 2 . 10g (0.0286mol) [C 2 (mim) 2 ]Br 2 Place the ionic liquid and 11.1042g (0.1143mol) KSCN in a 100ml single-necked flask, heat, stir and reflux at 80°C for 24 hours. After the reaction is complete, filter, distill off the acetone s...

Embodiment 2

[0026] Synthesis and characterization of:

[0027] (1) Slowly dissolve 8 g (0.0211 mol) of dysprosium trioxide in 20 g of 70% perchloric acid aqueous solution, stir and react at room temperature for 12 hours, remove water by rotary evaporation, and dry in vacuum for 48 hours to obtain Dy(ClO 4 ) 3 ·6H 2 O.

[0028] (2) Weigh 15 g (0.0695 mol) of 1,4-dibromoethane and 17.1113 g methylimidazole (0.2085 mol), place them in a single-necked flask, stir vigorously, and control the temperature at 70 ° C. After 24 hours of reaction, a large amount of White powder is formed, after cooling at low temperature, filter, and the filter cake is washed with 3×20ml acetone, and vacuum-dried for 24 hours to obtain a white powder product, [C 4 (mim) 2 ]Br 2 . 10g (0.0263mol) [C 4 (mim) 2 ]Br 2 Place the ionic liquid and 10.2292g (0.1052mol) KSCN in a 100ml single-necked flask, heat, stir and reflux at 80°C for 24 hours. After the reaction is complete, filter, distill off the acetone s...

Embodiment 3

[0032] Synthesis and characterization of:

[0033] (1) Slowly dissolve 8 g (0.0211 mol) of dysprosium trioxide in 20 g of 70% perchloric acid aqueous solution, stir and react at room temperature for 12 hours, remove water by rotary evaporation, and dry in vacuum for 48 hours to obtain Dy(ClO 4 ) 3 ·6H 2 O.

[0034] (2) Weigh 10 g (0.0410 mol) of 1,6-dibromoethane and 10.0980 g methylimidazole (0.1230 mol), place them in a single-necked flask, and keep the temperature at 70°C under vigorous stirring. After 24 hours of reaction, a large amount of White powder is formed, after cooling at low temperature, filter, and the filter cake is washed with 3×20ml acetone, and vacuum-dried for 24 hours to obtain a white powder product, [C 6 (mim) 2 ]Br 2 . 10g (0.0245mol) [C 6 (mim) 2 ]Br 2 Place the ionic liquid and 9.5236g (0.0980mol) KSCN in a 100ml single-necked flask, heat, stir and reflux at 80°C for 24 hours. After the reaction is complete, filter, distill off the acetone ...

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Abstract

The invention relates to bivalent cation magnetic ionic liquids and a preparation method thereof, and belongs to the technical fields of novel chemical materials and preparation. N-alkyl imidazole, 1,m-dibromoalkane, 1,m-dicholoroalkane, ferric trichloride, lanthanide metal oxide, potassium rhodanide and aqueous solution of perchloric acid are taken as raw materials to be prepared into the bivalent cation magnetic ionic liquids with different anion structures; and compared with the conventional magnetic ionic liquid, the magnetic ionic liquids have high magnetism, magnetic controllability and higher thermal stability. The invention realizes magnetic designability of the magnetic ionic liquids for the first time, and promotes the application of the magnetic ionic liquids in the fields such as aviation, medicines, biology and the like.

Description

Technical field: [0001] The present invention relates to a kind of ionic liquid and its preparation method, especially a kind of magnetic ionic liquid with divalent cation and containing Fe or containing Dy anion structure and the preparation method of this kind of ionic liquid, this type of magnetic ionic liquid is different from The conventional magnetic ionic liquid has magnetic adjustability and belongs to the technical field of new magnetic materials and their preparation. Background technique: [0002] Room temperature ionic liquids are salts composed of organic cations and inorganic or organic anions that are liquid at or near room temperature. Due to the designability of their structural properties, more and more functionalized ionic liquids have been developed in large numbers. [0003] Among them, the magnetic ionic liquid is a functional ionic liquid with magnetic properties. In addition to the special properties of ionic liquids, it can respond to external magne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D233/56C07D213/06H01F1/44
Inventor 张锁江李小华杨富明周清吕兴梅
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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