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A kind of spinel type manganese oxide lithium ion sieve h 1.6 mn 1.6 o 4 preparation method

A technology of h1.6mn1.6o4, manganese oxide, applied in chemical instruments and methods, manganese oxide/hydroxide, other chemical processes, etc., can solve the problem of low lithium extraction efficiency by ion sieve, and achieve high lithium extraction efficiency , good application prospect, uniform effect

Active Publication Date: 2020-10-30
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to overcome the defect of low efficiency of lithium ion sieving in the prior art, and to provide a spinel type manganese oxide lithium ion sieve H 1.6 mn 1.6 o 4 preparation method

Method used

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  • A kind of spinel type manganese oxide lithium ion sieve h <sub>1.6</sub> mn <sub>1.6</sub> o <sub>4</sub> preparation method
  • A kind of spinel type manganese oxide lithium ion sieve h <sub>1.6</sub> mn <sub>1.6</sub> o <sub>4</sub> preparation method
  • A kind of spinel type manganese oxide lithium ion sieve h <sub>1.6</sub> mn <sub>1.6</sub> o <sub>4</sub> preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh 0.6g of chitosan and 1.4g of 36% acetic acid into the mixture of 2.5mL of absolute ethanol and 30mL of distilled water and stir until completely dissolved. After the bubbles are discharged, add 0.0075g of KMnO. 4 , Get the mixture, inject the mixture into 1% NaOH solution with a syringe pump to form KMnO 4 / Chitosan microspheres; KMnO 4 / Chitosan microspheres are transferred to a 100mL polytetrafluoroethylene hydrothermal reactor, and enough distilled water is added to the reactor to fill up to 50mL. The reactor was sealed and placed in a 140°C blast drying oven. After 24 hours, the reactor was taken out and naturally cooled to room temperature. The reaction product was washed with deionized water several times and then placed in an oven at 60° C. and dried for about 4 hours to obtain γ-MnOOH / chitosan microspheres. Weigh about 2.0g of γ-MnOOH / chitosan microspheres and add them to 35ml of 4.0M LiOH solution, stir evenly, and then transfer to a 100mL polytetrafluoroet...

Embodiment 2

[0028] Weigh 0.5g of chitosan and 1.2g of 36% acetic acid and add them to the mixture of 2.5mL of absolute ethanol and 30mL of distilled water and stir until completely dissolved. After the bubbles are discharged, add 0.06g of KMnO. 4 , Get the mixed solution, inject the mixed solution into 1% NaOH solution with a syringe pump to form KMnO 4 / Chitosan microspheres; KMnO 4 / Chitosan microspheres are transferred to a 100mL polytetrafluoroethylene hydrothermal reactor, and enough distilled water is added to the reactor to fill up to 50mL. The reactor was sealed and placed in a 140°C blast drying oven. After 24 hours, the reactor was taken out and naturally cooled to room temperature. The reaction product was washed with deionized water several times and then placed in an oven at 60° C. and dried for about 4 hours to obtain γ-MnOOH / chitosan microspheres. Weigh about 1.8g of γ-MnOOH / chitosan microspheres and add them to 35ml of 3M LiOH solution and stir evenly, then transfer to a 100...

Embodiment 3

[0030] Weigh 0.3g of chitosan and 0.7g of 36% acetic acid into the mixture of 2.5mL of absolute ethanol and 30mL of distilled water and stir until completely dissolved. After the bubbles are discharged, add 0.0054g of KMnO. 4 , Get the mixed solution, inject the mixed solution into 1% NaOH solution with a syringe pump to form KMnO 4 / Chitosan microspheres; form KMnO 4 / Chitosan microspheres, KMnO 4 / Chitosan microspheres are transferred to a 100mL polytetrafluoroethylene hydrothermal reactor, and enough distilled water is added to the reactor to fill up to 50mL. The reactor was sealed and placed in a 140°C blast drying oven. After 24 hours, the reactor was taken out and naturally cooled to room temperature. The reaction product was washed with deionized water several times and then placed in an oven at 60° C. and dried for about 4 hours to obtain γ-MnOOH / chitosan microspheres. Weigh about 1.5g of γ-MnOOH / chitosan microspheres and add them to 35ml of 2.0M LiOH solution and stir e...

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Abstract

The invention belongs to the field of lithium ion adsorption and regeneration, in particular to a spinel type manganese oxide lithium ion sieve H 1.6 mn 1.6 o 4 method of preparation. In the present invention, potassium permanganate and chitosan are blended, contacted with lye to form microspheres, combined with the subsequent multi-step crystallization process to synthesize spinel-type manganese oxide lithium ion sieve H 1.6 mn 1.6 o 4 Microspheres, and applied to the extraction of lithium ions in Mg / Li brine. The ion sieve microspheres synthesized by the invention can selectively extract lithium ions in brine, solve the problems of low lithium extraction efficiency and complicated process in traditional techniques, and have significant economic value and social benefits.

Description

Technical field [0001] The invention belongs to the field of lithium ion adsorption and regeneration, and specifically relates to a spinel type manganese oxide lithium ion sieve H 1 . 6 Mn 1.6 O 4 The preparation method. Background technique [0002] Lithium (Li) is a rare metal with a silver-white appearance. At the same time, it is also the lightest metal in nature. As a new energy source in the 21st century, lithium is widely used in different fields such as electronic components, medical equipment, quartz watches, and household appliances. In addition, metallic lithium is also a material of strategic significance in the military industry. It can be used as a red luminescent agent for control rods, signal flares, and flares in atomic reactors and as a thick lubricant for aircraft. At the same time, lithium-aluminum alloys and lithium-aluminum-magnesium alloys are all structural materials for the manufacture of aircraft and ships, as well as important fuels for hydrogen bombs,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/06B01J20/30C01G45/02
CPCB01J20/06C01G45/02C01P2002/72C01P2004/03
Inventor 邬晓丽童霏王佳其贡洁周全法
Owner JIANGSU UNIV OF TECH
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