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Pyridine-ion-containing liquid, preparation method and application thereof

An ionic liquid and pyrrolidine technology is applied in the field of preparation of pyrrolidine-containing ionic liquids, which can solve the problem of high melting point of ionic liquids, and achieve the effects of improving complexing ability, being suitable for industrial production and being environmentally friendly.

Inactive Publication Date: 2013-01-23
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the embodiment of the present invention provides a pyrrolidine-containing ionic liquid, which solves the technical problem of the high melting point of the existing ionic liquid, as well as the preparation method and application of the ionic liquid

Method used

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  • Pyridine-ion-containing liquid, preparation method and application thereof
  • Pyridine-ion-containing liquid, preparation method and application thereof
  • Pyridine-ion-containing liquid, preparation method and application thereof

Examples

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preparation example Construction

[0024] see figure 1 , figure 1 Show the flow chart of the preparation method of the pyrrolidine-containing ionic liquid according to the embodiment of the present invention, including the following steps:

[0025] Step S01, preparing N-methoxyethoxymethyl-N-methylpyrrolidine halide

[0026] Under anhydrous and oxygen-free conditions, mix N-methylpyrrolidine and haloalkane in a molar ratio of 1:1.05-1:1.2, stir and react at a temperature of 60-80°C for 48-72 hours, and wash to obtain the structural formula (III) Represented N-methoxyethoxymethyl-N-methylpyrrolidine halide, wherein the alkyl halide is selected from methoxyethoxymethyl chloride, methoxyethoxybromethane or methoxyethoxy A kind of in methyl iodide, structural formula (III) is:

[0027]

[0028] Step S02, preparing an ionic liquid containing pyrrolidine

[0029] The N-methoxyethoxymethyl-N-methylpyrrolidine halide represented by the structural formula (III) and the inorganic salt are dissolved in water, stirr...

Embodiment 1

[0042] The embodiment of the present invention contains pyrrole ionic liquid with the following structural formula:

[0043]

[0044] The preparation method of the pyrrole-containing ionic liquid in the embodiment of the present invention comprises the following steps:

[0045] Step 1, preparation of chlorinated N-methoxyethoxymethyl-N-methylpyrrolidine

[0046] in N 2 (or Ar 2 ) under the protection of atmosphere, N-methylpyrrolidine (85g, 1mol) and methoxyethoxymethane chloride (136.4g, 1.1mol) were added to the reactor, the temperature was adjusted to 60°C, and the reaction was stirred for 48 hours ; Standing to cool, then the reaction product was washed three times with ethyl acetate, and dried in vacuum at 80°C to obtain a light yellow solid with a yield of 83%;

[0047] Step 2, preparation of N-methoxyethoxymethyl-N-methylpyrrolidine tetrafluoroborate

[0048] The chloride N-methoxyethoxymethyl-N-methylpyrrolidine (104.5g, 0.5mol), NaBF 4 (55g, 0.5mol), and 100mL...

Embodiment 2

[0051] The embodiment of the present invention contains pyrrole ionic liquid with the following structural formula:

[0052]

[0053] The preparation method of the pyrrole-containing ionic liquid in the embodiment of the present invention comprises the following steps:

[0054] Step 1, preparation of brominated N-methoxyethoxymethyl-N-methylpyrrolidine

[0055] in N 2 (or Ar2 ) Under the protection of the atmosphere, N-methylpyrrolidine (79g, 1mol) and methoxyethoxymethyl bromide (184.8g, 1.1mol) were added to the reactor, the temperature was adjusted to 70°C, and the reaction was stirred for 60 hours; Set to cool, then the reaction product was washed three times with ethyl acetate, and dried under vacuum at 80°C to obtain a pale yellow solid with a yield of 87%;

[0056] Step 2, preparation of N-methoxyethoxymethyl-N-methylpyrrolidine tetrafluoroborate

[0057] The brominated N-methoxyethoxymethyl-N-methylpyrrolidine (0.5mol), NaBF 4 (55g, 0.5mol), and 125mL deionized...

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Abstract

The invention is applicable to the field of new chemical material, and provides a pyridine-ion-containing liquid, a preparation method and an application thereof. The pyridine-ion-containing liquid has a formula as shown in the specification. According to the invention, by introducing C-O ether bond into cation, the performance of the ionic liquid is greatly improved, and for one hand, the melting point of the ionic liquid is significantly reduced, and for the other hand, complexation ability of the ionic liquid with the lithium ion is improved in electrochemical applications. The preparation method of the pyridine-ion-containing liquid is simple to operate, low in cost and friendly to the environment, and is ideal for industrial production.

Description

technical field [0001] The invention belongs to the field of new chemical materials, in particular to a pyrrolidine-containing ionic liquid, its preparation method and application. Background technique [0002] Ionic liquids (Ionic liquids) are liquids at room temperature (generally below 100°C) and are composed of organic cations and inorganic anions (or organic anions). Compared with traditional organic solvents and electrolytes, ionic liquids have a series of outstanding advantages: (1) the melting point is lower than or close to room temperature, and the liquid temperature range is wide; (2) low vapor pressure, almost non-volatile, colorless, smell; (3) has a large stable temperature range, good chemical stability and a wide electrochemical stable potential window; (4) good solubility characteristics, showing good solubility for many inorganic and organic substances ; (5) No fire point and not easy to burn; (6) Recyclable, no pollution to the environment, etc. But at p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D207/06C07C311/48C07C303/40C07C309/06C07C303/32H01M10/0568
CPCY02E60/12Y02E60/10
Inventor 周明杰刘大喜王要兵
Owner OCEANS KING LIGHTING SCI&TECH CO LTD