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Lithium ionic sieve adsorbent with self-cleaning function and preparation method and application thereof

An adsorbent, lithium ion technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve the problems of poor lithium adsorption stability and short service life, and improve conductivity and service life. , the effect of increasing wettability

Inactive Publication Date: 2017-02-15
SHANGHAI INST OF SPACE POWER SOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the lithium ion sieve adsorbent has a short service life in the actual brine environment and poor stability for lithium adsorption, and utilizes the characteristics of the self-cleaning ability of the titanium-containing oxide to make the material contain The surface can still be kept clean in the harsh environment of various elements and impurities, thereby reducing the influence of actual brine on the performance of the adsorbent, improving the capacity and efficiency of adsorption and desorption of lithium ions, thereby improving the stability and service life of the adsorbent

Method used

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  • Lithium ionic sieve adsorbent with self-cleaning function and preparation method and application thereof
  • Lithium ionic sieve adsorbent with self-cleaning function and preparation method and application thereof
  • Lithium ionic sieve adsorbent with self-cleaning function and preparation method and application thereof

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Effect test

Embodiment 1

[0027] Under a nitrogen atmosphere, weigh 10ml tetrahydrofuran, add 1.185g titanium isopropoxide, and weigh 33.3g Li 1.6 mn 1.6 o 2 Add the powder into it, and then use a magnetic stirring device to mix evenly. After stirring for 2-4 hours, place it in a planetary ball mill for ball milling for 8-12 hours to obtain a brown viscous suspension. The suspension was placed in a dry blast box at 60-80 °C to make it completely dry. After cooling, take out the agglomerated, brown powder and grind it in a mortar until pulverized. Place the ground powder in a high-temperature calcination furnace and calcinate at 300–350°C for 3–12 h to obtain titanium dioxide-coated Li 1.6 mn 1.6 o 2 Powder, the powder is light brown, not agglomerated, has poor fluidity, and its physical properties are consistent with those without coating. Take 5.88g of polyvinyl chloride particles and 34.3g of sintered Li 1.6 mn 1.6 o 2 Powder, dissolved in 100 ~ 200 ml of dimethylformamide, to obtain a brow...

Embodiment 2

[0033] Under a nitrogen atmosphere, weigh 30 ml of absolute ethanol, add 4.257 g of tetrabutyl titanate, and then weigh 66.6 g Li 1.6 mn 1.6 o 2 Add the powder into it, and then use a magnetic stirring device to mix evenly. After stirring for 2-4 hours, place it in a planetary ball mill for ball milling for 8-12 hours to obtain a brown viscous suspension. The suspension was placed in a dry blast box at 60-80 °C to make it completely dry. After cooling, take out the agglomerated, brown powder and grind it in a mortar until pulverized. Place the ground powder in a high-temperature calcination furnace and calcinate at 300–350°C for 3–12 h to obtain titanium dioxide-coated Li 1.6 mn 1.6 o 2 Powder, the powder is light brown, not agglomerated, with poor fluidity, and the physical properties are consistent with those without coating. Take 11.76 g of polyvinyl chloride particles and 67.6 g of sintered Li 1.6 mn 1.6 o 2Powder, dissolved in 100 ~ 200 ml of dimethylformamide, ...

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Abstract

The invention discloses lithium ionic sieve adsorbent with the self-cleaning function and preparation method and application thereof. The preparation method includes the steps of 1), under nitrogen atmosphere, dissolving titanium containing organic matters in organic solvent, adding a manganese lithium ionic sieve adsorbent powder, and performing stirring and ball milling to obtain suspension liquid; 2), drying the suspension liquid to obtain the powder, grinding and calcining the powder to obtain the adsorbent powder coated with the nano titanium-containing oxide; 3), blending the adsorbent powder coated with the nano titanium-coating oxide and the polymer containing solvent, and dropwise adding the mixture into water to obtain the millimeter-scale spherical adsorbent uniform in size. The lithium ionic sieve with the self-cleaning function is prepared by coating the surface of the manganese lithium ionic sieve adsorbent with the titanium-coating oxide, super-hydrophilic properities of the titanium-containing oxide are utilized, impurities or organic matters possibly adhered to the surface of the adsorbent in the actual environment of brine during adsorption can be washed out, stability of the adsorbent is improved, and service life of the adsorbent is prolonged.

Description

technical field [0001] The invention belongs to the field of energy saving and emission reduction, and relates to lithium resource recovery technology, in particular to a lithium ion sieve adsorbent with self-cleaning function, its preparation method and application. Background technique [0002] Lithium is a strategic raw material for the development of my country's new energy electric vehicles, renewable energy, micro-grid energy storage and other emerging strategic industries, and is an indispensable strategic resource for my country to become an economic and political power. SAIC’s electric car E50 is an example. A car uses about 28 kilograms of lithium (calculated as lithium metal), which is equivalent to the amount of lithium in 5,000 mobile phones. At present, the world's lithium production is less than 50,000 tons, which is only equivalent to the consumption of 1.6 million E50 electric vehicles. Therefore, with the popularization of electric vehicles, the explosive ...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C22B26/12C22B3/24C02F1/28
CPCB01J20/041B01J20/06B01J20/261B01J20/264B01J2220/46C02F1/288C02F2103/007C22B3/24C22B26/12
Inventor 徐碇皓吴勇民马瑞施斌汤卫平
Owner SHANGHAI INST OF SPACE POWER SOURCES
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