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Rare earth metal ionic liquid, preparation method and application thereof

A technology of rare earth metal ions and rare earth ions, which is applied in the direction of magnetic liquids, chemical instruments and methods, and luminescent materials, can solve problems such as lack of fluorescence and magnetic properties, poor thermal stability, and complicated preparation processes, and achieve The effect of rich colors, avoiding difficult dissolution, and low preparation cost

Inactive Publication Date: 2013-05-01
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nitroxyl rare earth metal salt ionic liquids reported in the literature do not have fluorescent and magnetic properties. This study only used triazolium and tetrazolium cations, and the synthesized ionic liquids have higher melting points, poor liquid properties, and thermal stability is not very good
In addition, its synthesis method requires relatively complicated preparation process and expensive dehydrating agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: 1,3-dimethylimidazole lanthanum hexanitrate ionic liquid [C 1 mim] 3 (La[NO 3 ] 6 )

[0023] Add 8.42 g (53.0 mmol) of 1,3-dimethylimidazole nitrate and 7.64 g (17.7 mmol) of lanthanum nitrate hexahydrate into 30 mL of acetonitrile, react at room temperature for 12 h, and evaporate the solvent to obtain a white powder 14.01 g of 1,3-dimethylimidazole lanthanum nitrate ionic liquid as solid, yield: 99%. The product was recrystallized from acetonitrile / ethyl acetate to obtain colorless transparent crystals. The crystal structure is monoclinic P 2 1 / c point group.

Embodiment 2

[0024] Embodiment 2: 1-methyl-3-ethylimidazole lanthanum hexanitrate ionic liquid [C 2 mim] 3 (La[NO 3 ] 6 )

[0025] After 4.67 g (27.0 mmol) of 1-methyl-3-ethylimidazole nitrate and 3.90 g (9.0 mmol) of lanthanum nitrate hexahydrate were dissolved completely in 10 mL of acetonitrile, 30 mL of ethyl acetate was added, and the Under the same conditions, react for 10 h. The product was separated and the solvent was evaporated to dryness to obtain 6.99 g of a colorless liquid 1-methyl-3-ethylimidazolium lanthanum nitrate ionic liquid, yield: 92%.

Embodiment 3

[0026] Embodiment 3: 1-methyl-3-butylimidazole lanthanum hexanitrate ionic liquid [C 4 mim] 3 (La[NO 3 ] 6 )

[0027] Add 6.45 g (32.1 mmol) of 1-methyl-3-butylimidazole nitrate and 4.63 g (10.7 mmol) of lanthanum nitrate hexahydrate into 50 mL of methanol, react at room temperature for 12 h, and evaporate the solvent to obtain Colorless liquid 1-methyl-3-butylimidazole lanthanum nitrate ionic liquid 9.80 g, yield: 99%.

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Abstract

The invention relates to a novel ionic liquid of nitryl rare earth metal acid salt anion, a preparation method and an application thereof, and belongs to the fields of rare earth functional materials, preparations and applications thereof. According to the method, a rare earth metal nitrate solution is added into a corresponding imidazole or pyridine nitrate ionic liquid solution in a mole ratio of 1:3, a solvent is removed after a reaction, and the rare earth metal ionic liquid is obtained. The prepared ionic liquid of the nitryl rare earth metal acid salt anion has good stability, is provided with characteristics of the ionic liquid as well as advantages of the rare earth metal simultaneously, and can be provided with characteristics of luminescence and magnetism; and the required cost is low, the preparation is simple and convenient, the product purity is high, the ionic liquid is suitable for large-scale production and application, and liquid luminescent materials / liquid magnetic materials with high-concentration rare earth can be prepared through the provided process which is simple, efficient and environment-friendly.

Description

technical field [0001] The present invention relates to a kind of rare earth metal ionic liquid and its preparation method and application, especially a new type of ionic liquid of nitroxyl rare earth metal salt anion and the preparation method and application of this type of ionic liquid, belonging to rare earth functional materials and their preparation technologies and fields of application. Background technique [0002] Ionic liquid is a kind of low-temperature molten salt. At close to room temperature (<150oC), it is a low-viscosity liquid composed entirely of ions. Ionic liquids are generally composed of organic cations and inorganic or organic anions. Ionic liquid is an excellent electrolyte. By the mid-1980s, it was found that ionic liquid can also be used as a new type of solvent and a new catalytic material, with properties that cannot be compared with common organic solvents and traditional catalysts. Ionic liquids have the advantages of high thermal stability...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D233/58C07D233/56C07D213/20C09K11/06H01F1/44
Inventor 陶国宏何玲季顺平
Owner SICHUAN UNIV
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