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Magnetic mesoporous silica surface-imprinted polymer adsorbing material and preparation method thereof

A technology of mesoporous silica and surface imprinting, applied in chemical instruments and methods, selective adsorption, chemical/physical processes, etc., can solve the problems of easy agglomeration, difficult recovery, and secondary pollution of nanomaterials, and achieve selective adsorption. Strong, low cost, good regeneration effect

Inactive Publication Date: 2017-01-18
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because nanomaterials are easy to agglomerate, difficult to recycle, and easy to cause secondary pollution, their use as adsorption materials is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 100mL of distilled water into a three-necked flask, pass nitrogen gas for 20min, then add 4.3g of ferric chloride hexahydrate and 1.7g of ferrous chloride tetrahydrate, heat up to 70°C, add 10mL of ammonia water, stir at constant temperature for 30min, then add 0.8mL of oleic acid, Continue the constant temperature reaction for 3 hours to obtain a dispersion of ferric oxide, and obtain magnetic particles of ferric oxide after centrifugation. Disperse 3.0g of ferric ferric oxide magnetic particles in 500mL of deionized water and ultrasonically treat it for 30min, then add 5g of cetyltrimethylammonium bromide, add 100mL of ammonia water after ultrasonic treatment for 60min, stir and heat to 40°C, and finally 100 mL of ethyl orthosilicate was slowly added dropwise, stirred for 2 hours, and then the product was washed with water and dried to obtain magnetic mesoporous silica.

[0017] Disperse 2.5g of magnetic mesoporous silica in 50mL of anhydrous toluene, then add 10...

Embodiment 2

[0020] Take 100mL of distilled water into a three-necked flask, pass nitrogen gas for 20min, then add 4.3g of ferric chloride hexahydrate and 1.7g of ferrous chloride tetrahydrate, heat up to 70°C, add 10mL of ammonia water, stir at constant temperature for 30min, then add 0.8mL of oleic acid, Continue the constant temperature reaction for 3 hours to obtain a dispersion of ferric oxide, and obtain magnetic particles of ferric oxide after centrifugation. Disperse 3.0g of ferric ferric oxide magnetic particles in 500mL of deionized water and ultrasonically treat it for 30min, then add 10g of cetyltrimethylammonium bromide, add 150mL of ammonia water after ultrasonic treatment for 60min, stir and heat to 40°C, and finally 150 mL of tetraethyl orthosilicate was slowly added dropwise, stirred and reacted for 3 hours, and the product was washed with water and dried to obtain magnetic mesoporous silica.

[0021] Disperse 2.5g of magnetic mesoporous silica in 50mL of anhydrous toluene...

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PUM

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Abstract

The invention discloses a magnetic mesoporous silica surface-imprinted polymer adsorbing material and a preparation method thereof. The preparation method comprises the following steps: firstly, modifying magnetic mesoporous silica with a silane coupling agent; then grafting an initiator; finally, preparing a surface-imprinted adsorbing material through a surface imprinting technology and an activator generated by electron transfer atom transfer radical polymerization (AGET ATRP). The adsorbing material prepared in the invention is fast to adsorb rare earth ions, strong in selective adsorption, easy to separate and recover, and applicable to the adsorption and separation of the rare earth ions.

Description

technical field [0001] The invention relates to a magnetic mesoporous silica surface imprinted polymer adsorption material and a preparation method thereof, belonging to the field of functional materials. Background technique [0002] Rare earths have unique electrical, magnetic, superconducting and other properties, and are widely used in electronic communications, metallurgy, petrochemical and other fields. With the development of high technology, the global demand for rare earths is increasing year by year. Due to the similar atomic structure and close physical and chemical properties of rare earth elements, they are often tightly combined and symbiotic in the same mineral, making it difficult to separate rare earth elements from each other. Therefore, it is of great significance to study and explore the separation and purification methods of rare earth elements for the development of my country's national economy and the improvement of scientific and technological level...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30B01D15/08
CPCB01D15/08B01J20/06B01J20/103B01J20/261B01J20/28009B01J2220/46B01J2220/4806B01J2220/4812
Inventor 王静静
Owner YANCHENG INST OF TECH
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