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Functionalized ionic liquid hybrid mesoporous molecular sieve MCM-48 composite material and preparation method and application thereof

A technology of MCM-48 and mesoporous molecular sieve, which is applied in the field of functionalized ionic liquid hybrid mesoporous molecular sieve MCM-48 composite material and its preparation, can solve the problems of a large amount of waste residue, waste liquid, secondary pollution, and high investment cost. Achieve controllable adsorption and desorption, convenient cubic structure, and reduce energy consumption

Inactive Publication Date: 2014-04-02
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the discarding method, for example, the limestone method occupies an important position. Although the method is simple, it produces a large amount of waste residue and waste liquid, causing secondary pollution.
In the recovery method, one of the most important methods is activated carbon adsorption to remove acid gas. This method is simple and does not produce secondary pollution, but its investment cost is high

Method used

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  • Functionalized ionic liquid hybrid mesoporous molecular sieve MCM-48 composite material and preparation method and application thereof
  • Functionalized ionic liquid hybrid mesoporous molecular sieve MCM-48 composite material and preparation method and application thereof
  • Functionalized ionic liquid hybrid mesoporous molecular sieve MCM-48 composite material and preparation method and application thereof

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Experimental program
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Embodiment 1

[0042] A preparation method of functionalized ionic liquid hybrid molecular sieve MCM-48 composite material, the steps are as follows:

[0043] (1) Equimolar amounts of N-[3-(triethoxysilyl)propyl]-4,5-dihydroimidazole (0.01mol, 2.74g) and 3-bromopropylamine hydrobromide (0.01mol , 2.19g) was added into 10mL ethanol, stirred and refluxed at 80°C for 24 hours. Ethanol was removed by rotary evaporation at 80°C, the remaining product was washed with pentane to remove unreacted precursors, and vacuum-dried at room temperature to obtain a functionalized ionic liquid. The synthesis process of functionalized ionic liquid is as follows:

[0044]

[0045] (2) Dissolve 2.6g of CTAB in a mixture consisting of 50ml of ethanol, 12ml of ammonia water, and 120ml of distilled water, and stir at room temperature until the solid is completely dissolved and the bubbles on the liquid surface basically disappear. According to the molar ratio of 1:9, 0.8g of functionalized ionic liquid was dis...

Embodiment 2

[0057] A preparation method of functionalized ionic liquid hybrid molecular sieve MCM-48 composite material, the steps are as follows:

[0058] (1) Add equimolar amounts of N-(3-butyltriethoxysilane)-imidazole (0.01mol, 2.44g) and 2-iodoethylamine hydroiodide (0.01mol, 2.99g) into 10mL In ethanol, stir and reflux at 70°C for 48 hours. Ethanol was removed by rotary evaporation at 80°C, the remaining product was washed with pentane to remove unreacted precursors, and vacuum-dried at room temperature to obtain a functionalized ionic liquid. The synthesis process of functionalized ionic liquid is as follows:

[0059]

[0060] (2) Dissolve 2.6g of CTAB in a mixture consisting of 50ml of ethanol, 12ml of ammonia water, and 120ml of distilled water, and stir at room temperature until the solid is completely dissolved and the bubbles on the liquid surface basically disappear. According to the molar ratio of 1:19, 0.44g of functionalized ionic liquid was dissolved in 5mL of methan...

Embodiment 3

[0067] A preparation method of functionalized ionic liquid hybrid molecular sieve MCM-48 composite material, the steps are as follows:

[0068] (1) Add equimolar amounts of 2-(2-pyridyl)ethyltrimethoxysilyl (0.01mol, 2.27g) and 2-chloroethylamine hydrochloride (0.01mol, 1.16g) to 10mL of ethanol , stirred and refluxed at 90°C for 20 hours. Ethanol was removed by rotary evaporation at 80°C, the remaining product was washed with pentane to remove unreacted precursors, and vacuum-dried at room temperature to obtain a functionalized ionic liquid. The synthesis process of functionalized ionic liquid is as follows:

[0069]

[0070] (2) Dissolve 2.6g of CTAB in a mixture consisting of 50ml of ethanol, 12ml of ammonia water, and 120ml of distilled water, and stir at room temperature until the solid is completely dissolved and the bubbles on the liquid surface basically disappear. According to the molar ratio of 3:17, 0.84g of functionalized ionic liquid was dissolved in 5mL of m...

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Abstract

The invention belongs to the field of functionalized ionic liquid immobilization, and discloses a functionalized ionic liquid hybrid mesoporous molecular sieve MCM-48 composite material and a preparation method and application thereof. The preparation method comprises the following steps: (1) uniformly mixing ethanol, deionized water and ammonium hydroxide, adding a template agent, and stirring until the template agent is completely dissolved; (2) preparing the functionalized ionic liquid by using two precursors, and mixing the functionalized ionic liquid with tetraethoxysilane; (3) dropwise adding the mixed solution obtained in the step (1) to generate a flocculent product, transferring the flocculent product in a polytetrafluoroethylene reaction still and carrying out hydrothermal crystallization; and (4) suction-filtering, chemically extracting filter residue, washing, drying in vacuum, activating to obtain the functionalized ionic liquid hybrid mesoporous molecular sieve MCM-48 composite material. The composite material prepared by the method disclosed by the invention combines the dual adsorption effect of the functionalized ionic liquid and MCM-48 on the post-FGD, and the good adsorption effect can be realized at low temperature.

Description

technical field [0001] The invention belongs to the field of immobilization of functionalized ionic liquids, and in particular relates to a functionalized ionic liquid hybrid mesoporous molecular sieve MCM-48 composite material and its preparation method and application. Background technique [0002] With the development of chemical technology in recent years, ionic liquids, as a new type of "green solvent", have attracted extensive attention from academia and business circles. At the same time, by functionalizing ionic liquids, new physical and chemical properties and functions can be endowed to ionic liquids. Due to the rapid development of the design, synthesis and application of functionalized ionic liquids, a large number of ionic liquids with special functions have been synthesized and widely used in various application fields. Immobilizing functionalized ionic liquids on the surface of organic polymers or inorganic materials by physical adsorption can achieve simple ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30B01D53/02
Inventor 李雪辉肖利容张磊王芙蓉于英豪王乐夫
Owner SOUTH CHINA UNIV OF TECH
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