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Salicylic acid functionalized boron chelating adsorbent preparation method, product prepared therethrough, and application of product

A technology of chelating adsorbent and salicylic acid, which is applied in boron oxide compounds, chemical instruments and methods, boron oxyacids, etc., to achieve the effects of high-efficiency extraction, mild reaction conditions, and easy-to-obtain raw materials

Inactive Publication Date: 2017-09-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are few reports on the preparation of boron chelating resins using aromatic substances containing salicyl groups or o-phenolic hydroxyl pairs as functional monomers. This type of functional monomer mainly includes salicylic acid and its derivatives.

Method used

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  • Salicylic acid functionalized boron chelating adsorbent preparation method, product prepared therethrough, and application of product
  • Salicylic acid functionalized boron chelating adsorbent preparation method, product prepared therethrough, and application of product
  • Salicylic acid functionalized boron chelating adsorbent preparation method, product prepared therethrough, and application of product

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Preparation of salicylic acid-functionalized boron chelate adsorbent: 2.00 g of salicylic acid, 1.36 g of phenol, 3.53 g of formaldehyde, 0.2 mL of concentrated hydrochloric acid, and 7 mL of ethylene glycol methyl ether were stirred and dissolved to prepare an aqueous phase solution. Stir 1.00g of Span-80 and 100mL of liquid paraffin evenly to obtain an oil phase solution. After the aqueous phase solution was pre-polymerized at 65°C for 2h, it was slowly added to the oil phase, and reacted at a mechanical stirring rate of 380rpm and 90°C for 10h to obtain the primary product. The initial product was subjected to Soxhlet extraction with acetone for 48 hours to remove impurities such as porogens and reaction raw materials, and finally the obtained adsorbent was vacuum-dried at 50° C. for 12 hours to obtain the final product.

[0035] According to the test, the time for this product to reach adsorption equilibrium in 1000 mg / L boric acid aqueous solution at 25°C and pH 9 ...

Embodiment 2

[0038] Preparation of catechol functionalized boron chelate adsorbent: 1.59g catechol, 1.36g phenol, 3.53g formaldehyde, 0.2mL concentrated hydrochloric acid, 7mL ethylene glycol methyl ether were stirred and dissolved to prepare an aqueous phase solution. Stir 1.00g of Span-80 and 100mL of liquid paraffin evenly to obtain an oil phase solution. After the aqueous phase solution was pre-polymerized at 65°C for 2h, it was slowly added to the oil phase, and reacted at a mechanical stirring rate of 380rpm and 90°C for 10h to obtain the primary product. The initial product was subjected to Soxhlet extraction with acetone for 48 hours to remove impurities such as porogens and reaction raw materials, and finally the obtained adsorbent was vacuum-dried at 50° C. for 12 hours to obtain the final product.

[0039] After testing, the product reaches adsorption equilibrium in 1000mg / L boric acid aqueous solution for 30 minutes at 25°C and pH 9, and the saturated adsorption capacity can re...

Embodiment 3

[0041] Preparation of 2,5-dihydroxy-1,4-benzenedicarboxylic acid functionalized boron chelate adsorbent: 2.87g 2,5-dihydroxy-1,4-benzenedicarboxylic acid, 1.36g phenol, 3.53g formaldehyde , 0.2mL of concentrated hydrochloric acid, and 7mL of ethylene glycol methyl ether were stirred and dissolved to obtain an aqueous phase solution. Stir 1.00g of Span-80 and 100mL of liquid paraffin evenly to obtain an oil phase solution. After the aqueous phase solution was pre-polymerized at 65°C for 2h, it was slowly added to the oil phase, and reacted at a mechanical stirring rate of 380rpm and 90°C for 10h to obtain the primary product. The initial product was subjected to Soxhlet extraction with acetone for 48 hours to remove impurities such as porogens and reaction raw materials, and finally the obtained adsorbent was vacuum-dried at 50° C. for 12 hours to obtain the final product.

[0042] After testing, the product reaches adsorption equilibrium in 1000mg / L boric acid aqueous solutio...

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Abstract

The invention discloses a salicylic acid functionalized boron chelating adsorbent preparation method, a product prepared therethrough, and an application of the product. The preparation method comprises the following steps: mixing a functional component, phenol, formaldehyde, concentrated hydrochloric acid and a pore forming agent in proportion to obtain a water phase, carrying out a pre-polycondensation reaction on the water phase, transferring the obtained pre-polycondensation reaction product to an oil phase, carrying out reversed phase suspension polymerization to obtain a primary product, carrying out Soxhlet extraction on the primary product to obtain the purified salicylic acid functionalized boron chelating adsorbent, wherein the functional component is at least one of salicylic acid and derivatives thereof. The salicylic acid functionalized boron chelating adsorbent prepared in the invention has the advantages of high specific selectivity, short adsorption balancing time and high adsorption efficiency, and is applied to the extraction of boron from water. Aromatic salicylic acid and the derivatives thereof are adopted as the boron adsorption functional component, and the target product is obtained through the reversed phase suspension polymerization and the one-step polycondensation, so the preparation method has the advantages of simplicity, mild conditions, and realization of high-efficiency extraction of boric acid from water.

Description

technical field [0001] The invention relates to the technical field of adsorption materials and water resources treatment, in particular to a preparation method of a salicylic acid functionalized boron chelating adsorbent and its application in extracting boron from salt lake brine. Background technique [0002] Boron and boron compounds are widely used in modern industrial production and daily life, with more than 300 uses. With the further development of boron chemical industry and downstream industries, domestic demand for boron compounds has increased significantly in recent years, and domestic boron products are in short supply. Limited by resource conditions, my country's dependence on imported boron products is increasing year by year. At present, more than 70% of the total domestic consumption of boron products needs to be obtained from abroad. As the solid boron ore resources that can be mined and utilized in China become less and less, the development and utilizati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26C01B35/10
CPCB01J20/262C01B35/1045
Inventor 鲍宗必任其龙陈少锋王佳伟杨亦文邢华斌张治国杨启炜
Owner ZHEJIANG UNIV
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