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Preparation method of boric-acid functionalized porous adsorbent

A porous adsorbent, functionalized technology, applied in chemical instruments and methods, solid adsorbent liquid separation, separation methods, etc., to achieve the effect of reducing secondary environmental pollution, multiple binding sites, and less pollution

Inactive Publication Date: 2017-07-21
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantage that the existing boric acid functionalized adsorbent needs to achieve higher adsorption efficiency for LTL under alkaline conditions, and provide a boric acid functionalized porous adsorbent with higher adsorption efficiency under neutral conditions and its preparation method

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0027] (1) Preparation of boric acid functionalized mesoporous nanoparticles (BA-MSNs):

[0028] First, 1.37g of 3-aminophenylboronic acid and 2.36g of 3-glycidyloxypropyltriethoxysilane were added to a 25mL round bottom flask, then 10mL of tetrahydrofuran was slowly added, and nitrogen gas was introduced to remove oxygen for 15min, then at 25 o C under reaction for 12h. Finally, the mixed solution was removed by rotary evaporation, and the resulting brown oily substance was dissolved in 10 mL of methanol solution to obtain a concentration of 1.0 mmol mL -1 APBA-GPTES solution.

[0029] Subsequently, 0.3 g of cetyltrimethylammonium bromide and 0.1 g of sodium hydroxide were dissolved in 150 mL of deionized water, heated and stirred to 75 o C, then add 1.25mL tetraethyl silicate and 100µL APBA-GPTES solution dropwise, after stirring continuously for 2h, centrifuge and wash the precipitate 5 times with ethanol. Finally, the product obtained at 50 o Boronic acid-functionaliz...

Embodiment 2

[0038] (1) Preparation of boric acid functionalized mesoporous nanoparticles (BA-MSNs):

[0039] First, 1.37g of 3-aminophenylboronic acid and 2.36g of 3-glycidyloxypropyltriethoxysilane were added to a 25mL round bottom flask, then 10mL of tetrahydrofuran was slowly added, and nitrogen gas was introduced to remove oxygen for 15min, then at 25 o C under reaction for 12h. Finally, the mixed solution was removed by rotary evaporation, and the resulting brown oily substance was dissolved in 10 mL of methanol solution to obtain a concentration of 1.0 mmol mL -1 APBA-GPTES solution.

[0040] Subsequently, 0.2 g of cetyltrimethylammonium bromide and 0.05 g of sodium hydroxide were dissolved in 150 mL of deionized water, heated and stirred to 70 o C, then add 1.0 mL tetraethyl silicate and 50 µL APBA-GPTES solution drop by drop, after stirring continuously for 1 h, centrifuge and wash the precipitate 5 times with ethanol. Finally, the product obtained at 50 o Boronic acid-functi...

Embodiment 3

[0046] (1) Preparation of boric acid functionalized mesoporous nanoparticles (BA-MSNs):

[0047] First, 1.37g of 3-aminophenylboronic acid and 2.36g of 3-glycidyloxypropyltriethoxysilane were added to a 25mL round bottom flask, then 10mL of tetrahydrofuran was slowly added, and nitrogen gas was introduced to remove oxygen for 15min, then at 25 o C under reaction for 12h. Finally, the mixed solution was removed by rotary evaporation, and the resulting brown oily substance was dissolved in 10 mL of methanol solution to obtain a concentration of 1.0 mmol mL -1 APBA-GPTES solution.

[0048] Subsequently, 0.4g of cetyltrimethylammonium bromide and 0.15g of sodium hydroxide were dissolved in 150mL of deionized water, heated and stirred to 80 o C, then add 1.5mL tetraethyl silicate and 150µL APBA-GPTES solution dropwise, after stirring continuously for 3h, centrifuge and wash the precipitate 5 times with ethanol. Finally, the product obtained at 50 o Boronic acid-functionalized ...

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Abstract

The invention relates to a preparation method of a boric-acid functionalized porous adsorbent, and belongs to the technical field of preparation of medicinal materials. The preparation method includes preparing boric-acid functionalized nano particles BA-MSNs, taking glycidyl methacrylate as a monomer, taking divinyl benzene as a cross-linking agent, taking azodiisobutyronitrile as an initiator, adding a surfactant Hypermer 2296, stirring to form Pickering high-internal-phase emulsion, and performing thermal-initiation polymerization to obtain boric-acid functionalized porous resin; introducing a B-N coordination compound according to a post-modification method to prepare the boric-acid functionalized porous adsorbent, and applying the boric-acid functionalized porous adsorbent to adsorption separation of luteolin under a neutral condition. The prepared adsorbent has a communicated porous structure, high permeability, high adsorption capacity and high recycle rate, and is environment friendly; adsorption can be achieved under the neutral condition, and secondary pollution and luteolin oxidation are reduced.

Description

technical field [0001] The invention relates to a preparation method of a boric acid functionalized porous adsorbent, which belongs to the technical field of preparation of medical functional materials. Background technique [0002] Flavonoids containing cis-dihydroxyl functional groups, such as luteolin (LTL), have attracted more and more attention in recent years due to their antioxidant capacity, anticancer effects, anti-inflammatory and anti-allergic activities, while extraction and isolation from natural plants Luteolin is the main source of its current industrial application. Organic solvent extraction is the most commonly used method to extract luteolin from natural compounds. However, organic solvent extraction usually requires the use of a large amount of organic solvents, resulting in high environmental pollution and low separation efficiency. Therefore, it is urgent to develop new adsorption materials for the adsorption and separation of luteolin. Due to the adv...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30B01D15/10
CPCB01J20/265B01D15/10B01J20/28069
Inventor 朱恒佳潘建明刘金鑫顾润兴黄伟姚俊彤
Owner JIANGSU UNIV
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