Preparation method of three-dimensional ordered large-hole manganese oxygen 'lithium ionic sieve'

A three-dimensional ordered lithium-ion technology, applied in chemical instruments and methods, manganese compounds, lithium compounds, etc., can solve the problems of low adsorption capacity and poor lithium extraction effect, achieve high adsorption capacity, improve internal and external areas, The effect of improving adsorption performance

Inactive Publication Date: 2007-10-31
XIANGTAN UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The extraction of lithium from low-concentration seawater and salt lake brine mainly adopts the adsorption method. The lithium ion sieve used is a powder material, which needs to be made into particles by adding a binder. Therefore, the adsorption capacity is low, and the effect of lithium extraction is not very good.

Method used

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  • Preparation method of three-dimensional ordered large-hole manganese oxygen 'lithium ionic sieve'
  • Preparation method of three-dimensional ordered large-hole manganese oxygen 'lithium ionic sieve'
  • Preparation method of three-dimensional ordered large-hole manganese oxygen 'lithium ionic sieve'

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Embodiment 1

[0023] As shown in Figure 1, Figure 2, Figure 3, and Figure 4, add methyl methacrylate and deionized water into the three-necked flask at a ratio of 1:10, pass through nitrogen protection, and add at a temperature of 70°C and a stirring speed Potassium persulfate initiator was used for in-situ polymerization; microspheres were oriented and ordered by centrifugal sedimentation method to obtain colloidal crystal template; analytically pure lithium chloride (LiCl·H 2 O) 0.6041g, manganese chloride (MnCl 2 4H 2 O) 3.9541g and citric acid (C 6 h 8 o 7 ·H 2 (0) 4.2027g substance, dissolve with distilled water, adjust the pH value of solution with concentrated ammonia water, be made into the precursor solution of 20ml; Immerse the colloidal crystal template in the precursor solution for about 3 minutes, and wait for the solution to fully infiltrate into the gap between the microspheres and the template After complete wetting, the excess solution was removed by suction filtration...

Embodiment 2

[0025] As shown in Figure 1, Figure 5, Figure 6, and Figure 7, add styrene and deionized water into the three-necked flask at a ratio of 1:10, pass through nitrogen protection, and add peroxodisulfuric acid at a temperature of 70°C and a stirring speed Potassium initiator was used for in-situ polymerization; microspheres were oriented and ordered by centrifugal sedimentation method to obtain colloidal crystal template; analytically pure lithium nitrate (LiNO 3 )0.9193g, 50% manganese nitrate [Mn(NO 3 ) 2 ] solution 7.1578g and citric acid (C 6 h 8 o 7 ·H 2 (0) 4.2027g substance, dissolve with distilled water, adjust the pH value of solution with concentrated ammonia water, be made into the precursor solution of 20ml; Immerse the colloidal crystal template in the precursor solution for about 3 minutes, and wait for the solution to fully infiltrate into the gap between the microspheres and the template After complete wetting, the excess solution was removed by suction filtr...

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Abstract

The invention relates to the making of 3DOM. It is made through synthesizing polymethyl methacryate or polystyrene pattern lumber, using Li and Mn front drive solution to stuff glue crystalline, through two sections of constant temperature baking to get 3DOM, using acid or peroxy-disulfate to perform acid etch. The result is that the product is the low density material in small blocks, unnecessary to add adhesive with high adhesive feature, using ammonium peroxy-disulfate to remove Li, reduced in Mn ion damage, improved adhesive feature, showing three dimensional porous frame structure, significantly improved in drive power inside the screen and the outside surface of the micro hole adhesive, being a dual hole channel with both macro and micro holes.

Description

technical field [0001] The invention relates to a preparation method of an ion sieve adsorbent, in particular to a preparation method of a lithium ion sieve adsorbent. Background technique [0002] Lithium is the lightest silver-white metal in nature, and is widely used in glass, ceramics, lubricants, refrigerants, metallurgy and pharmaceutical industries, especially in the research of chemical power sources, alloy materials and nuclear fusion power generation. Note that it is recognized as "the energy metal that promotes the progress of the world" and is known as "new energy in the 21st century". However, the total amount of terrestrial lithium resources in the world (mainly ore lithium resources and salt lake lithium resources) is about 17 million tons (converted to metal lithium), which is far from meeting the long-term market needs of lithium. In contrast, lithium resources in seawater are very huge. About 260 billion tons, 0.17 mg of lithium per liter of seawater. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/04B01J20/30C22B26/12C22B3/24C01G45/00C01D15/00
Inventor 杨立新宋春霞
Owner XIANGTAN UNIV
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