Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of phosphate lithium ion sieve filler and preparation method thereof

A phosphate type, lithium ion technology, applied in chemical instruments and methods, lithium halide, other chemical processes, etc., can solve the problems of lithium ion sieve packing adsorption capacity and adsorption rate decrease, lack of adsorption capacity, mass transfer channel blockage and other problems , to achieve good practical value, simplify the process, and improve the effect of stability

Active Publication Date: 2020-07-21
SHIFANG JINDIYAMEI CHEM ENG
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the granular or special-shaped fillers suitable for tower operation are prepared by the cross-linking of organic polymer materials. Since the organic polymer solution may enter the pores of the lithium-ion sieve during the filler molding process, causing its transmission Due to the blockage of the pores, the adsorption capacity and adsorption rate of the formed lithium-ion sieve packing are greatly reduced. In practical applications, there is a lack of high-performance lithium-ion sieve packing with large adsorption capacity, good stability and long cycle life.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 150 mL of 2 mol / L ammonia water to 25 mL of 2 mol / L chromium sulfate aqueous solution to make the solution alkaline, and filter and separate the generated Cr(OH) 3 Precipitate, wash the precipitate with deionized water until it does not contain sulfate ions; add it to 400 mL of 1 mol / L lithium hydroxide aqueous solution, stir and dissolve to form a green solution; then slowly add 2 mol / L phosphoric acid aqueous solution 125 mL under stirring, Immediately formed Li 3 PO 4 and CrPO 4 The co-precipitation of the neutralized reaction solution was hydrothermally treated at 100-120 ° C for 12 hours, concentrated, cooled, and filtered to obtain the composition Li 4 Cr(PO 4 ) 2.3 The complex 29.8g.

[0025] Add 50 mL of 2 mol / L ammonia water to 25 mL of 2 mol / L titanyl sulfate aqueous solution to make the solution alkaline, and filter and separate the generated Ti(OH) 4 Precipitate, wash the precipitate with deionized water until it does not contain sulfate ions; add ...

Embodiment 2

[0028] Add 75 mL of 2 mol / L ammonia water to 12.5 mL of 2 mol / L chromium sulfate aqueous solution to make the solution alkaline, and filter and separate the generated Cr(OH) 3 Precipitate, wash the precipitate with deionized water until it does not contain sulfate ions; add it to 400 mL of 1 mol / L lithium hydroxide aqueous solution, stir and dissolve to form a green solution; then slowly add 2 mol / L phosphoric acid aqueous solution 100 mL under stirring, Immediately formed Li 3 PO 4 and CrPO 4 Co-precipitation, the neutralized reaction solution was hydrothermally treated at 100-120°C for 10h, concentrated, cooled, and filtered to obtain the composition Li 8 Cr(PO 4 ) 3.7 The complex 23.0g.

[0029] Add 50 mL of 2 mol / L ammonia water to 25 mL of 2 mol / L titanyl sulfate aqueous solution to make the solution alkaline, and filter and separate the generated Ti(OH) 4 Precipitate, wash the precipitate with deionized water until it does not contain sulfate ions; add it to 80mL o...

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

PropertyMeasurementUnit
densityaaaaaaaaaa
adsorption capacityaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to phosphate lithium ion sieve packing, in particular to nano titanium dioxide-coating light glass material-loading chromium phosphate lithium ion sieve packing. The porosity ofthe packing is 30 to 60 percent, the density is 400 to 800 kg / m<3>, a lithium ion sieve accounts for 55 to 65 percent by weight of the packing, the nano titanium dioxide accounts for 10 to 15 percentby weight of the packing, the balance is light-weight glass material, and an adsorption capacity of the lithium ion sieve packing is 15 to 20 mg / g; the nano titanium dioxide is prepared from inorganictitanate in a hydrolysis manner, and a particle size is 5 to 15 nm; and the light-weight glass material is one of a glass fiber product, a foam glass product, coal ash floating beads or hollow glassmicrospheres with the density smaller than 500 kg / m<3>. By adopting the doping and coating of nano TiO2, the adsorption capacity and stability of the chromium phosphate lithium ion sieve can be improved, and the service life of the chromium phosphate lithium ion sieve can be prolonged.

Description

technical field [0001] The invention relates to a phosphate-type lithium ion sieve filler and a preparation method thereof, in particular to a filler composed of a chromium phosphate ion sieve coated with nano-titanium dioxide loaded on a light glass material and a preparation method thereof, belonging to the field of new energy and new materials . [0002] technical background [0003] With the rapid expansion of the lithium-containing material market and rising prices, the research on lithium sources has also expanded from traditional lithium ore extraction to the development and utilization of liquid lithium resources such as salt lake brine, seawater, and geothermal water. The ion sieve adsorption method has attracted much attention due to its advantages of simple process, high recovery rate, good selectivity and environmental friendliness. The key to extract lithium by ion sieve adsorption method is to prepare lithium ion sieve adsorbent with large adsorption capacity a...

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 Patents(China)
IPC IPC(8): B01J20/10B01J20/28B01J20/30C01D15/04
CPCB01J20/024B01J20/0259B01J20/06B01J20/103B01J20/28011B01J20/28021B01J20/28023B01J20/28045C01D15/04
Inventor 李建生刘炳光葸彦娇张泽江张腾李仕增
Owner SHIFANG JINDIYAMEI CHEM ENG