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

A technology of pyridine ions and liquids, applied in the field of chemical materials, can solve the problem of high melting point of ionic liquids, achieve the effect of improving complexation ability, suitable for industrial production, and simple operation

Active 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 pyridine-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

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preparation example Construction

[0024] see figure 1 , figure 1 The flowchart showing the preparation method of the pyridine-containing ionic liquid according to the embodiment of the present invention includes the following steps:

[0025] Step S01, preparing alkylpyridine halides

[0026] Under anhydrous and oxygen-free conditions, mix pyridine 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 alkylpyridine represented by structural formula (III) Halides, wherein the alkyl halide is selected from one of methoxyethoxymethyl chloride, methoxyethoxymethyl bromide or methoxyethoxymethyl iodide, and the structural formula (III) is:

[0027]

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

[0029] The alkylpyridine halide represented by the structural formula (III) and the inorganic salt are dissolved in water, stirred and reacted for 8-24 hours to obtain a pyridine-containing ionic liquid, wherein the anion i...

Embodiment 1

[0042] The embodiment of the present invention contains pyridine ionic liquid, which has the following structural formula:

[0043]

[0044] The preparation method of the pyridine-containing ionic liquid according to the embodiment of the present invention comprises the following steps:

[0045] Step 1, preparation of chlorinated 1-methoxyethoxymethylpyridinium chloride salt

[0046] in N 2 (or Ar 2 ) under the protection of atmosphere, pyridine (79g, 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 for cooling, 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 85%;

[0047] Step 2, preparation of 1-methoxyethoxymethylpyridine tetrafluoroborate

[0048] The 1-methoxyethoxymethylpyridine chloride (112.5g, 0.5mol) obtained in step 1, NaBF 4 (55g, 0.5mo...

Embodiment 2

[0051] The embodiment of the present invention contains pyridine ionic liquid, which has the following structural formula:

[0052]

[0053] The preparation method of the pyridine-containing ionic liquid according to the embodiment of the present invention comprises the following steps:

[0054] Step 1, preparation of 1-methoxyethoxymethylpyridine bromide

[0055] in N 2 (or Ar 2 ) under the protection of atmosphere, pyridine (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; standing for cooling, and then The reaction product was washed three times with ethyl acetate, and dried under vacuum at 80°C to obtain a light yellow solid with a yield of 86%;

[0056] Step 2, preparation of 1-methoxyethoxymethylpyridine tetrafluoroborate

[0057] The brominated 1-methoxyethoxymethylpyridine (0.5mol), NaBF 4 (55g, 0.5mol), and 120mL deionized water were added to ...

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Abstract

The invention is applicable to the technical field of chemical materials, 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 technical field of chemical materials, and in particular relates to a pyridine-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,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D213/04C07C309/06C07C303/32H01M10/0568H01G9/035
CPCY02E60/12Y02E60/13Y02E60/10
Inventor 周明杰刘大喜王要兵
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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