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Synthesizing method of porous ion liquid polymer

A synthesis method and technology of ionic liquid, applied in organic chemistry and other directions, can solve the problems of high technical cost, low adsorption efficiency, long adsorption time, etc., and achieve the effects of low technical cost, short adsorption time, and high CO2 concentration

Inactive Publication Date: 2012-05-23
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In industrial applications, the pressure swing adsorption method has the following disadvantages: the traditional adsorbent has low adsorption efficiency, requires a large amount, and the technical cost is high, and the obtained CO 2 The concentration is low; while the viscosity of the ionic liquid is relatively high, CO 2 Long adsorption time, CO 2 low adsorption capacity
Current ionic liquid polymers for the separation of CO 2 The research is only in the exploratory stage, and further in-depth research is needed

Method used

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  • Synthesizing method of porous ion liquid polymer
  • Synthesizing method of porous ion liquid polymer
  • Synthesizing method of porous ion liquid polymer

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Embodiment 1

[0018] Embodiment 1: the synthetic process flow that the present invention prepares porous ionic liquid polymer is:

[0019]

[0020] The synthetic method of porous ionic liquid polymer, its synthetic method comprises A, B, C and D four steps:

[0021] A. use the chlorinated 1-allyl-3-methylimidazole ionic liquid of formula (II) to react 1-methylimidazole and chloropropene of formula (I); in the synthetic method of preparation formula (II), Under the protection of an inert gas, the molar ratio of 1-methylimidazole and allyl chloride of the formula (I) is 1:1.0 to 1.3, and the reaction is stirred at room temperature to 80°C for 1 to 24 hours;

[0022] B. Use formula (II) to react 1-allyl-3-methylimidazolium ionic liquid and fluoroboric acid to generate 1-allyl-3-methylimidazolium tetrafluoroborate ionic liquid of formula (III) ; In the synthetic method for preparing formula (III), the mol ratio of the chloride 1-allyl-3-methylimidazolium ionic liquid of formula (II) and flu...

Embodiment 2

[0026] Example 2: 1-allyl-3-methylimidazolium tetrafluoroborate ([amim]BF 4 )Synthesis:

[0027] Add 2.0gl-methylimidazole and 2.20g allyl chloride into the three-necked flask, N 2 Protection, heated to reflux in an oil bath at 60°C, and stirred for 7h. Evaporate under vacuum at 40°C to remove excess allyl chloride, and cool to room temperature. Use diethyl ether as the extractant and vigorously stir to remove residual 1-methylimidazole. The solvent was evaporated and dried in vacuo for 4h to obtain dark yellow viscous liquid [amim]Cl.

[0028] 2.51g 40% HBF 4 Slowly added to 2.0g [amim]Cl, stirred electromagnetically at room temperature for 2h, and extracted with chloroform (10mL×3). The organic phase was evaporated in vacuo at 90°C to obtain light yellow mucus [amim]BF 4 .

[0029] 1-allyl-3-methylimidazolium tetrafluoroborate and acrylonitrile copolymer ([amim]BF 4 / AN) synthesis

[0030] 2 mL of anhydrous dimethyl sulfoxide, 0.6 g of acrylonitrile, 1.4 g of [amim]...

Embodiment 3

[0033] Example 3: 10 mL of n-octane was used as the porogen for the two-step seed swelling method, and the rest of the synthesis steps and raw material consumption were the same as in Example 2.

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Abstract

The invention relates to a synthesizing method of a porous ion liquid polymer, belonging to the field of synthesizing methods for separating and revering CO2 polymers. The synthesizing method of the porous ion liquid polymer comprises the following steps of: A, performing reaction of 1-methylimidazole and chloropropene to generate chlorinated 1-allyl-3-methylimidazole ion liquid; B, performing reaction of the chlorinated 1-allyl-3-methylimidazole ion liquid and fluoboric acid to generate 1-allyl-3-methylimidazole tetrafluoroborate ion liquid; C, performing reaction of the 1-allyl-3-methylimidazole tetrafluoroborate ion liquid with acrylonitrile to generate an ion liquid polymer; D, preparing the porous ion liquid polymer, i.e. adding sodium dodecyl benzene sulfonate, dibutyl phthalate anddeionized water to carry out activation by taking the ion liquid polymer as a seedball, then respectively adding normal heptane, normal octane and toluene or cyclohexane to carry out swelling, then adding a monomer and benzoperoxide to carry out secondary swelling, and adding polyvinyl alcohol to carry out polymerization so as to obtain the porous ion liquid polymer. The invention has moderate reaction condition and short CO2 absorption time and high absorption amount in industrial application.

Description

technical field [0001] The invention relates to a method for separating and recovering CO 2 A method for synthesizing a polymer, in particular a method for synthesizing a porous ionic liquid polymer. Background technique [0002] In recent years, human society is facing enormous environmental pressure due to global warming. Excessive emission of greenhouse gases is the main cause of global warming, among the greenhouse gases CO 2 Large content and long retention time, thus reducing CO 2 Curbing global warming has become an important issue for the sustainable development of human society. [0003] Currently, pressure swing adsorption is used to treat CO 2 Separation and recovery, and the use of ionic liquids as new efficient and environmentally friendly absorbents. In industrial applications, the pressure swing adsorption method has the following disadvantages: the traditional adsorbent has low adsorption efficiency, requires a large amount, and the technical cost is hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D233/06C08F226/06C08J9/14
Inventor 朱佳媚周建华
Owner CHINA UNIV OF MINING & TECH
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