Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Conductive aluminum lithium ion adsorption column material and preparation method thereof

A conductivity and lithium-ion technology, which is applied in the preparation field of lithium-ion adsorption, can solve the problems that the final product is not cross-linked and solidified, the precursor is not treated with hydrophilicity, and the adsorption effect of the adsorbent is reduced, and the mechanical strength is good. , good acid and alkali resistance, adjustable particle size

Active Publication Date: 2019-08-09
QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
View PDF12 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have a specific scope of use, but are also subject to certain restrictions during their use
For example, if the particles prepared by the organic dissolution method need to be spherical, an excessive amount of organic polymer is required to make the compound into colloidal particles, which reduces the adsorption effect of the adsorbent.
The second method of hot melting is not suitable for inorganic compounds prepared at low temperature, especially those with crystalline hydrates or inorganic compounds that are easily decomposed at high temperature
The third method is not suitable for alkaline or acid-base-sensitive compounds, and the adsorption performance will be easily damaged in the later hydrophilic modification process.
[0006] In the prior art, the publication number is CN 101955210 A, and in the patent named granular lithium ion sieve, an inert gas is used as a protective gas to protect the reaction process. At the same time, the precursor is not treated with hydrophilicity. The prepared particles are in the shape of rods, which can be adsorbed but cannot be used as an adsorption column material. At the same time, the final product prepared is not cross-linked and solidified, so that the product will shrink and deform to a certain extent after drying.
The patent with the publication number CN 106084102 A uses the reaction of styrene and compounds in the oil phase to prepare adsorbent particles. This method has a limited load capacity and the prepared particles are hydrophobic particles, which are more suitable for oily pollutants. Adsorption removal, not conducive to adsorption treatment in aqueous solution
[0007] There are two main disadvantages of the direct use of adsorbents: (1) The conventional lithium adsorbents are in powder form, which is difficult to promote in actual use.
(2) The ion exchange rate of the adsorbent itself is relatively slow, which causes a lot of waste to the eluent
After the prepared adsorbent is cleaned and dried, the adsorbent column material is compounded through the polymerization of organic monomers, and the procedure is complicated.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Conductive aluminum lithium ion adsorption column material and preparation method thereof
  • Conductive aluminum lithium ion adsorption column material and preparation method thereof
  • Conductive aluminum lithium ion adsorption column material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] A method for preparing a conductive aluminum-based lithium ion adsorption column material provided by an aspect of the embodiments of the present invention includes:

[0025] uniformly mix the dispersant and the organic solvent to form the first mixed liquid;

[0026] uniformly mixing the inorganic adsorbent and the crosslinking agent to form a second mixed liquid, the inorganic adsorbent includes aluminum hydroxide and lithium hydroxide;

[0027] After mixing the first mixed solution and the second mixed solution, heat up, then add polymer monomers and initiators to react, and finally add conductive organic monomers and solid conductive materials for polymerization to obtain conductive aluminum-based lithium ion adsorption column material.

[0028]In some embodiments, the preparation method includes: mixing the first mixed liquid with the second mixed liquid, raising the temperature to 55-80° C. and stirring at 50-200 rpm, and condensing and refluxing for 2-6 hours, ...

Embodiment 1

[0060] (1) After mixing 0.5 g of propylene glycol monostearate and 100 g of heptane, they were uniformly stirred to prepare a first mixed liquid.

[0061] (2) 2 g of lithium hydroxide solution, 3 g of secondary water, 10 g of aluminum hydroxide and 0.1 g of diethylenetriamine were mixed, ultrasonically dispersed, and stirred to prepare a second mixed liquid.

[0062] (3) Mix the first mixed liquid with the second mixed liquid, raise the temperature to 55° C., stir at 50 rpm, and reflux for 2 hours.

[0063] (4) Add 5 g of acrylic acid, 0.5 g of ammonium persulfate, and 1.0 g of water. The stirring rate was 300 rpm, and the reaction was carried out for 1 hour.

[0064] (5) Increase the rotation speed to 700 rpm, add 0.1 g of aniline, and 0.1 g of conductive aluminum powder, stir and react for 1 hour, and maintain the temperature at 75°C.

[0065] (6) Stop stirring, filter, and wash with secondary water to obtain a conductive aluminum-based lithium ion adsorption column materi...

Embodiment 2

[0067] (1) After mixing 2.5 g of propylene glycol monostearate and 100 g of heptane, stir evenly to prepare the first mixed liquid.

[0068] (2) 5 g of lithium hydroxide solution, 5 g of secondary water, 25 g of aluminum hydroxide and 0.1 g of diethylenetriamine were mixed, ultrasonically dispersed, and stirred to prepare a second mixed liquid.

[0069] (3) Mix the first mixed liquid with the second mixed liquid, raise the temperature to 80° C., stir at 200 rpm, and reflux for 6 hours.

[0070] (4) Add 25 g of acrylic acid, ammonium persulfate aqueous solution, 3 g of ammonium persulfate, and 5 g of water. The stirring rate was 300 rpm, and the reaction was carried out for 2 hours.

[0071] (5) The rotation speed was increased to 1000 rpm, 2.0 g of aniline and 1.5 g of conductive carbon powder were added, and the reaction was stirred for 5 hours, and the temperature was maintained at 80°C.

[0072] (6) Stop stirring, filter, and wash to obtain a conductive aluminum-based lit...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a conductive aluminum lithium ion adsorption column material and a preparation method thereof. The preparation method comprises the steps that a dispersing agent and an organicsolvent are mixed to be uniform, and first mixed liquid is formed; aluminum hydroxide, lithium hydroxide and a cross-linking agent are mixed to be uniform, and second mixed liquid is formed; after the first mixed liquid and the second mixed liquid are mixed, heating is carried out, polymer monomers and an initiator are added to react, finally conductive organic matter monomers and a solid conductive material are added to be subjected to a polymerization reaction, and the conductive aluminum lithium ion adsorption column material is obtained. According to the conductive aluminum lithium ion adsorption column material and the preparation method thereof, the lithium hydroxide is inserted into the layered compound aluminum hydroxide, and is combined with acidic or basic groups of the polymermonomers, carboxy groups on the surface of an obtained polymer and aniline are subjected to secondary crosslinking, and a conductive polyaniline surface coating is prepared; meanwhile, the surface ofthe polymer is bonded with inorganic conductive powder during secondary crosslinking, and the obtained lithium ion adsorption column material is good in mechanical strength, high in selectivity, largein capacity and good in stability and electrical conductivity.

Description

technical field [0001] The invention relates to a lithium ion adsorption column material, in particular to a conductive aluminum-based lithium ion adsorption column material and a preparation method thereof, belonging to the technical field of preparation of lithium ion adsorption. Background technique [0002] At present, in terms of lithium extraction technology, whether it is ore lithium extraction or salt lake lithium extraction in China, it is classified into five aspects: electrodialysis, extraction, precipitation, calcination, and adsorption. These five processes are in lithium resources. There are applications in the development. For different salt lakes, the selection process and preparation methods are different, and all of them have a certain usable range. Since the first four processes are suitable for the extraction of high-concentration lithium resources in the old brine of salt lakes, the actual loss is relatively large in the process of converting the origin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F220/20C08F2/44B01J20/26
CPCB01J20/041B01J20/08B01J20/262C08F2/44C08F220/06C08F220/20
Inventor 刘忠钱志强郭敏李权吴志坚
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products