Piperidines ionic liquid, and preparation method and application thereof

An ionic liquid, piperidine technology, applied in the preparation of sulfonates, sulfonic acid amides, organic chemistry, etc., can solve the problems of explosion, gas leakage, unsafe use, etc.

Inactive Publication Date: 2014-05-14
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The electrolyte of traditional supercapacitors is generally organic electrolyte, and organic electrolyte is easy to decompose to produce hydrocarbon gas, gas leakage or even explosion, which is not safe to use

Method used

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  • Piperidines ionic liquid, and preparation method and application thereof
  • Piperidines ionic liquid, and preparation method and application thereof
  • Piperidines ionic liquid, and preparation method and application thereof

Examples

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preparation example Construction

[0041] Such as figure 1 The preparation method of the above-mentioned piperidine class ionic liquid shown, comprises the following steps:

[0042] S110. Under a protective gas atmosphere, methylpiperidine having a molar ratio of 1:1.05 to 1.2 and a general formula CH 3 O(CH 2 ) n The alkyl halide of X is stirred and reacted at 60°C to 80°C to obtain a crude product, wherein X is Cl, Br or I. The crude product is washed and dried to give the alkylpiperidine halide.

[0043] Alkyl piperidine halides have the general structural formula:

[0044]

[0045] Wherein, n is 2, 3 or 4, X - for Cl - 、Br - or I - .

[0046] Methylpiperidine and have the general formula CH 3 O(CH 2 ) n The alkyl halide of X will undergo a nucleophilic substitution reaction, in which methylpiperidine is the nucleophile. During the reaction, the methyl piperidine will replace the CH with the general formula CH 3 O(CH 2 ) n The halogen in the haloalkane of X, the halogen leaves have the gen...

Embodiment 1

[0115] (1) Preparation of piperidine-based ionic liquids.

[0116] Into a 250mL flask were added 1mol of methylpiperidine and 1.1mol of methoxychloroethane. in N 2 Under the protection of the atmosphere, the temperature was raised to 70° C., and the reaction was stirred for 40 h. After standing to cool, the reaction product was washed three times with ethyl acetate, and then dried in vacuo at 80° C. to obtain light yellow solid N-methoxyethyl-N-methylpiperidinium chloride salt with a yield of 80 %.

[0117] Add 0.5mol of N-methoxyethyl-N-methylpiperidinium chloride salt, 0.53mol of NaBF to a 250mL flask 4 And 130mL deionized water, stirred at room temperature for 8h. The reacted solution was extracted three times with dichloromethane, the amount of dichloromethane used each time was 250 mL, and the organic phases of dichloromethane were combined. Then the dichloromethane organic phase was back-extracted several times with deionized water, the amount of deionized water eac...

Embodiment 2

[0121] (1) Preparation of piperidine-based ionic liquids.

[0122] Into a 250mL flask were added 1mol of methylpiperidine and 1.05mol of methoxybromopropane. Under the protection of Ar atmosphere, the temperature was raised to 60° C., and the reaction was stirred for 60 h. After standing to cool, the reaction product was washed three times with ethyl acetate, and then dried in vacuo at 80° C. to obtain light yellow solid N-methoxypropyl-N-methylpiperidinium bromide salt with a yield of 81 %.

[0123] Add 0.5 mol of N-methoxypropyl-N-methylpiperidinium bromide, 0.5 mol of KPF to the 250 mL flask 6 and 100 mL of deionized water, stirred at room temperature for 20 h, extracted the reacted solution three times with dichloromethane, each time the amount of dichloromethane was 250 mL, and combined the organic phases of dichloromethane. Then the dichloromethane organic phase was back-extracted several times with deionized water, the amount of deionized water each time was 60mL, un...

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Abstract

The invention discloses a piperidines ionic liquid which has the following general structural formula defined in the description, wherein n is 2, 3 or 4, and Y<-> represents BF4<->, PF6<->, (CF3SO2)2N<-> or CF3SO3<->. The piperidines ionic liquid is composed of an anion and a cation at the room temperature, has good conductivity, moreover, is not easily volatilized, is not burnt, and has good thermal stability. When a piperidines ionic liquid electrolytic solution is used in a super capacitor, because an organic solvent of the piperidines ionic liquid electrolytic solution is evenly mixed with a large amount of the piperidines ionic liquid, the piperidines ionic liquid electrolytic solution is safer to use compared with a traditional organic electrolytic solution. The invention also discloses a preparation method and an application of the piperidines ionic liquid.

Description

technical field [0001] The invention relates to the field of electrolytes for supercapacitors, in particular to piperidine ionic liquids and their preparation methods and applications. Background technique [0002] Ionic liquids (Ionic liquids) are liquid at room temperature (generally below 100°C), and are composed of organic cations and inorganic anions (or organic anions). Ionic liquids are adjustable, and changing their anion and cation structures according to different needs can achieve the designer's purpose, so ionic liquids are called the designer's solvent. The first ionic liquid, nitroethylamine, was discovered as early as 1914, but the research progress in this field has been slow since then. Until 1992, after the research group led by Wikes synthesized 1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid ([EMIM]BF4) with low melting point, hydrolysis resistance and strong stability, the research of ionic liquid It was able to develop rapidly, and subseque...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D295/088C07C311/48C07C309/06C07C303/32C07C303/40H01G11/62
CPCY02E60/13C07D295/088H01G11/62
Inventor 周明杰刘大喜王要兵袁新生
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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