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Hydroximic acid functionalized polymer/inorganic composite chelating adsorption material and preparation method thereof

An inorganic composite, chelating adsorption technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc. problem, to achieve the effects of excellent adsorption and desorption performance, strong selective identification, and simple preparation process

Inactive Publication Date: 2015-04-22
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention can not produce the macromolecule effect of macromolecule chelating resin in order to solve the hydroxamic acid material existing in the prior art, as characteristics such as high adsorption characteristic and separable, reusable, and does not have the physicochemical stability of chelating resin With the advantages of good performance and simple operation, a hydroxamic acid functionalized polymer / inorganic composite chelating adsorption material and its preparation method are provided

Method used

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  • Hydroximic acid functionalized polymer/inorganic composite chelating adsorption material and preparation method thereof
  • Hydroximic acid functionalized polymer/inorganic composite chelating adsorption material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Example 1: In a four-neck flask, add 10g of salicylic hydroxamic acid and 100ml of N,N-dimethylformamide, after the salicylic hydroxamic acid is fully dissolved, add 1,4 - Dichloromethoxybutane 21mL, stir well and add 1.2mL of SnCl 4 , constant temperature reaction for 13h, and then let the reaction solution stand overnight, a white precipitate was precipitated, filtered with suction, washed with ethanol, and dried in vacuo to obtain chloromethyl salicylic hydroxamic acid with a yield of 75%.

[0022] 0.83g chloromethyl salicylic hydroxamic acid and 0.2 g grafted particles PHEMA / SiO 2 Add it to 20mL dimethyl sulfoxide, raise the temperature to 110°C, and add 1.5g sodium carbonate, N 2 Under protection, react at constant temperature for 10 hours, filter, wash with distilled water and solvent repeatedly, and dry in vacuum to obtain the salicylic hydroxamic acid functionalized polymer / inorganic composite chelating adsorption material SHA-PHEMA / SiO 2 . The bonding ratio ...

Embodiment 2

[0023] Example 2: In a four-necked flask, add 9g of salicylic hydroxamic acid and 80mL of 1,4-dioxane. After the salicylic hydroxamic acid is fully dissolved, add 1,4- Dichloromethoxybutane 18mL, after stirring evenly, add 1.0mL of SnCl 4 , constant temperature reaction for 12h, and then let the reaction solution stand overnight, a white precipitate was precipitated, filtered with suction, washed with ethanol, and dried in vacuo to obtain chloromethyl salicylic hydroxamic acid with a yield of 69%.

[0024] 0.15g chloromethyl salicylic hydroxamic acid and 0.2g grafted particles PHEMA / SiO 2 Add to 12ml of N,N-dimethylformamide, raise the temperature to 90°C, and add 1.3g of sodium carbonate, N 2 Under protection, react at constant temperature for 10 hours, filter, wash with distilled water and solvent repeatedly, and dry in vacuum to obtain the salicylic hydroxamic acid functionalized polymer / inorganic composite chelate adsorption material SHA-PHEMA / SiO 2 . The bonding rate o...

Embodiment 3

[0025] Example 3: In a four-neck flask, add 8g of salicylic hydroxamic acid and 100ml of N,N-dimethylacetamide, after they are fully dissolved, add 1,4-dimethoxylate dropwise through a constant pressure dropping funnel at 5°C Chloromethoxybutane 15mL, after stirring evenly, add 0.8mLTiCl 4 , constant temperature reaction for 10h, and then let the reaction solution stand overnight, a white precipitate precipitated, filtered, washed with ethanol, and dried in vacuo to obtain chloromethyl salicylic hydroxamic acid with a yield of 60%.

[0026] 0.55g chloromethyl salicylic hydroxamic acid and 0.2g grafted particles PHEMA / SiO 2 Add it to 17mL of mixed solvent of dimethyl sulfoxide and N,N-dimethylformamide (V:V=1:1), raise the temperature to 100°C, and add 1g of sodium bicarbonate, N 2 Under protection, react at constant temperature for 9 hours, filter, wash with distilled water and solvent repeatedly, and dry in vacuum to obtain the salicylic hydroxamic acid functionalized polyme...

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Abstract

The invention belongs to the technical field of the treatment of heavy metal ions in industrial waste water and the extraction of rare earth ions in rare earth mines, and aims to solve the problem that existing hydroxamic acid materials cannot produce polymer effects, such as high adsorption characteristics, separable, reusable and other characteristics, and The invention does not have the advantages of good physical and chemical stability and simple operation of chelating resins, and provides a hydroxamic acid functionalized polymer / inorganic composite chelating adsorption material and a preparation method thereof. It is composed of carrier micron-level silica and hydroxamic acid functionalized polymer that selectively recognizes and adsorbs heavy metal ions and rare earth ions. The particle size of the micron-level silica is 90-125 μm. The adsorption material of the present invention can effectively remove heavy metal ions in industrial wastewater and extract rare earth ions from rare earth ores. The preparation method is simple, the performance is stable, and it has strong selective recognition and adsorption capabilities for heavy metal ions and rare earth ions. It is fast and easy to regenerate, so it can be used repeatedly.

Description

Technical field [0001] The present invention is the treatment of heavy metal ions in industrial wastewater and the technology field of rare earth ions in rare earth ore. It is specific to a type of hydroxyl acid functional polymer / inorganic composite chelating adsorption material and its preparation methods. Background technique [0002] Heavy metal wastewater refers to wastewater containing heavy metal ions. Heavy metal wastewater is mainly derived from metal mines, non -ferrous smelting, steel, electrolytic, petrochemical, pesticide, paint, medicine, painting, photography, line boards, aviation equipment and other industriesEssenceHeavy metal ions are a permanent pollutant, and most of them are toxic substances that cause teratogenic, carcinogenic, and mutations.Waste water and waste residue containing heavy metal ions have caused great harm to humans.At present, the methods of heavy metal ions in water are mainly precipitation, oxidation reduction, and adsorption method.The fi...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/62
Inventor 王蕊欣史小慧高保娇焦纬洲门吉英李艳华
Owner ZHONGBEI UNIV
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