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Preparation method and application of imprinted porous adsorption lithium/rubidium ion material

A porous adsorption, rubidium ion technology, applied in adsorption water/sewage treatment, chemical instruments and methods, water/sewage treatment, etc., can solve problems such as limiting the dispersibility of CNTs, achieve stable structure, simple operation, and improve adsorption performance. Effect

Active Publication Date: 2019-01-11
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the huge specific surface area and surface energy of CNTs, it is very easy to agglomerate, which will virtually limit the dispersion of CNTs in the matrix

Method used

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  • Preparation method and application of imprinted porous adsorption lithium/rubidium ion material
  • Preparation method and application of imprinted porous adsorption lithium/rubidium ion material
  • Preparation method and application of imprinted porous adsorption lithium/rubidium ion material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] (1) Take 4 mL KH560 and 44 mL dry toluene in a 100 mL three-neck round bottom flask, add 2.5 g carboxylated carbon nanotubes and 0.2 mL triethylamine under magnetic stirring, stir in dry nitrogen and reflux at 130°C for 8h ; Filter, wash with toluene, acetone, deionized water and acetone in sequence, and vacuum dry at 90°C for 10 h; obtain KH560 grafted carbon nanotubes (KH560 / MWCNTs).

[0051] (2) Take 2.5 g IC4A in a 100 mL three-necked round bottom flask, add 50 mL toluene, add 1.3 g NaH, N under magnetic stirring 2 Under the protection of 90℃ oil bath for 40 minutes; let stand to take the supernatant, add tetrabutylammonium bromide and 2.5 gKH560 / MWCNTs, dry it in N 2 Stir in medium and react at 80°C under slight reflux for 30 h; filter while hot and wash until the filtrate is colorless and clear. The obtained solid was vacuum dried at 140°C for 12 hours to obtain the imprinted porous adsorbent material (IC4ABC).

[0052] Simulated salt lake brine adsorption experiment

...

Embodiment 2

[0055] (1) Take 4 mL KH560 and 38 mL dry toluene into a 100 mL three-neck round bottom flask, add 1.6 g carboxylated carbon nanotubes and 0.16 mL triethylamine under magnetic stirring, stir in dry nitrogen and reflux at 120°C for 6 hours ; Filter, wash with toluene, acetone, deionized water and acetone successively, and vacuum dry at 90°C for 8 h; obtain KH560 grafted carbon nanotubes (KH560 / MWCNTs).

[0056] (2) Take 2.5 g IC4A in a 100 mL three-necked round bottom flask, add 50 mL toluene, add 1.2 g NaH, N under magnetic stirring 2 Oil bath at 80℃ for 40 min under protection; stand still to take the supernatant, add tetrabutylammonium bromide and 1.7 gKH560 / MWCNTs, dry it in N 2 Stir at medium and reflux at 80°C for 22 h; filter while hot and wash until the filtrate is colorless and clear. The obtained solid was vacuum dried at 140°C for 10 h to obtain the imprinted porous adsorbent material (IC4ABC).

[0057] Simulated salt lake brine adsorption experiment

[0058] Add the prepar...

Embodiment 3

[0060] (1) Take 4 mL KH560 and 41 mL dry toluene into a 100 mL three-neck round bottom flask, add 2.2 g carboxylated carbon nanotubes and 0.12 mL triethylamine under magnetic stirring, stir in dry nitrogen and reflux at 130°C for 5h ; Filter, wash with toluene, acetone, deionized water and acetone successively, and dry under vacuum at 80°C for 10 h; obtain KH560 grafted carbon nanotubes (KH560 / MWCNTs).

[0061] (2) Take 2.5 g IC4A in a 100 mL three-necked round bottom flask, add 50 mL toluene, add 1.1 g NaH, N under magnetic stirring 2 Under the protection of 90℃ oil bath for 20 minutes; let stand to take the supernatant, add tetrabutylammonium bromide and 2.1 g KH560 / MWCNTs, dry it in N 2 Stir in the medium and react at 80°C under slight reflux for 26 h; filter while hot and wash until the filtrate is colorless and clear. The obtained solid was vacuum dried at 130°C for 8 hours to obtain the imprinted porous adsorbent material (IC4ABC).

[0062] Simulated salt lake brine adsorptio...

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Abstract

The invention belongs to the technical fields of the preparation and separation of materials, relates to the preparation of lithium / rubidium ion double-adsorption materials and particularly relates toa preparation method and application of an imprinted porous adsorption lithium / rubidium ion material. The preparation method comprises the steps of firstly carrying out hydroxylation on a carbon nano-tube, and reacting by virtue of triethoxy linked with silicon in 3-glycidoxypropyltrimethoxysilane KH560 and hydroxy on the carbon nano-tube, so as to introduce epoxy groups; and carrying out open loop compounding with phenolic hydroxyl group of imprinted p-tert-butyl[4]arene IC4A, so as to obtain the imprinted porous adsorption material. By combining the complexing effect of p-tert-butyl[4]areneand an ion imprinting technique, the effective selective double absorption of lithium / rubidium ions can be realized. The invention further discloses application of the prepared material in the adsorption of lithium ions and rubidium irons in salt lake brine. The method is relatively simple in operation, and the prepared imprinted porous adsorption material is stable in structure and has a relatively large specific surface area; and in combination with the ion imprinting technique, the adsorption sites of the material can be increased, and the adsorption performance of the material can be improved.

Description

Technical field [0001] The invention belongs to the technical field of material preparation and separation, and relates to the preparation of a lithium / rubidium ion double adsorption material, in particular to a preparation method and application of an imprinted porous adsorption material. Background technique [0002] Since the discovery of carbon nanotubes (CNTs) by Lijima, a scientist at NEC in Japan in 1991, carbon nanotubes have become the focus of attention due to their unique properties. Until now, carbon nanotubes have also been the focus of attention of experts, scholars and researchers from all over the world. With the deepening of research, carbon nanotube functional materials are gradually being applied to various fields of industrial production. This rapid development is mainly because the structure of carbon nanotubes gives it very excellent mechanical properties, electrical properties, thermal properties and a large aspect ratio. [0003] CNTs have a hollow porous ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/26B01J20/28C02F1/28C02F103/08
CPCB01J20/205B01J20/268B01J20/28054C02F1/28C02F1/283C02F1/285C02F2101/10C02F2103/08
Inventor 邱凤仙王媛媛蒲志龙徐吉成张涛杨冬亚
Owner JIANGSU UNIV
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