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A kind of method for preparing lithium ion sieve adsorbent

A lithium ion and adsorbent technology, applied in the field of preparing lithium ion sieve adsorbent, can solve the problems of poor product controllability, poor adsorption performance, long process, etc., and achieves low time and energy consumption, stable structure and controllability high effect

Active Publication Date: 2021-03-05
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most methods have problems such as long process, high energy consumption, poor product controllability and poor adsorption performance.

Method used

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  • A kind of method for preparing lithium ion sieve adsorbent
  • A kind of method for preparing lithium ion sieve adsorbent
  • A kind of method for preparing lithium ion sieve adsorbent

Examples

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Embodiment 1

[0032] The present embodiment provides a kind of method for preparing lithium ion sieve adsorbent (its flow chart is as follows figure 1 shown), including the following steps:

[0033] (1) Take by weighing 2.82g lithium citrate, 7.90g manganese acetate (lithium manganese molar ratio 1:1.075), take pure water as solvent, fully mix;

[0034] (2) Place the mixed solution in a computerized microwave, ultrasonic, ultraviolet combined catalytic synthesizer, and heat it under the joint action of microwave and ultrasonic wave. First, heat it in a closed environment for 0.5h, and then adjust it to an open system and heat it for 1h to obtain co-precipitation The product, wherein the microwave parameters are: frequency 2450MHz, power 800W, ultrasonic parameters are: frequency 25KHz, power 800W;

[0035] (3) Dry the obtained co-precipitation product in a vacuum drying oven, set parameters: 150°C, 6h, and then place it in a muffle furnace for constant temperature roasting, set roasting pa...

Embodiment 2

[0042] The present embodiment provides a kind of method for preparing lithium ion sieve adsorbent, comprises the following steps:

[0043] (1) Take by weighing 2.82g lithium citrate, 8.27g manganese acetate (lithium manganese molar ratio 1:1.125), take pure water as solvent, fully mix;

[0044] (2) Place the mixed solution in a computerized microwave, ultrasonic, ultraviolet combined catalytic synthesizer, and heat it under the joint action of microwave and ultrasonic wave. First, heat it in a closed environment for 0.5h, and then adjust it to an open system and heat it for 1h to obtain co-precipitation The product, in which microwave parameters are: frequency 2450MHz, power 700W, ultrasonic parameters are: frequency 25KHz, power 700W;

[0045] (3) Dry the obtained co-precipitation product in a vacuum drying oven, set parameters: 150°C, 5h, and then place it in a muffle furnace for constant temperature roasting, set roasting parameters: 280°C, 6h, and naturally cool after roas...

Embodiment 3

[0049] The present embodiment provides a kind of method for preparing lithium ion sieve adsorbent, comprises the following steps:

[0050] (1) Take by weighing 2.82g lithium citrate, 9.19g manganese acetate (lithium manganese molar ratio 1:1.25), take pure water as solvent, fully mix uniformly;

[0051] (2) Place the mixed solution in a computerized microwave, ultrasonic, ultraviolet combined catalytic synthesizer, and heat it under the joint action of microwave and ultrasonic wave. First, heat it in a closed environment for 0.5h, and then adjust it to an open system and heat it for 1h to obtain co-precipitation The product, wherein the microwave parameters are: frequency 2450MHz, power 600W, ultrasonic parameters are: frequency 25KHz, power 600W;

[0052] (3) Dry the obtained co-precipitation product in a vacuum drying oven, set parameters: 150°C, 5h, and then place it in a muffle furnace for constant temperature roasting, set roasting parameters: 320°C, 6h, and naturally coo...

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Abstract

The invention provides a method for preparing a lithium ion sieve adsorbent, comprising: using an aqueous solution of lithium salt and manganese salt as a raw material, using microwaves and ultrasonic waves to obtain a co-precipitation product, and then roasting the co-precipitation product to obtain lithium ions The sieve precursor is finally obtained by acid leaching the lithium ion sieve precursor. The method of the present invention uses the mixed aqueous solution of lithium salt and manganese salt as raw material, produces precipitation under the joint action of microwave and ultrasonic wave, and then obtains a lithium ion sieve precursor with ideal structure through roasting, which has high purity and high lithium content. The lithium ion sieve adsorbent finally obtained after the treatment of the ion sieve precursor has a stable structure and high adsorption capacity, and the method of the present invention consumes less time and energy and has high controllability, which is of great significance to the recycling and utilization of lithium metal resources.

Description

technical field [0001] The invention relates to the field of preparation of lithium adsorbents, in particular to a method for preparing lithium ion sieve adsorbents. Background technique [0002] Lithium is the metal with the smallest density, with a silvery white luster, and its electrochemical activity is extremely strong. Lithium and its compounds have an important strategic position in the national economy and national defense construction. Because of their excellent performance, they are widely used in electronics, metallurgy, medicine, chemical industry, energy and other fields, especially in glass manufacturing, aluminum smelting, ceramics, etc. Industry and synthetic plastics, rubber, pharmaceuticals, accounting for about 75% of its total consumption. Lithium batteries were developed in the 1930s and 1940s. As "green energy", lithium-ion batteries have the characteristics of light weight, high performance, high specific energy, less environmental pollution, long cyc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/06C01G45/02C02F1/28B01J20/30
CPCB01J20/041B01J20/06C01G45/02C02F1/281
Inventor 席晓丽赵林艳马立文曹明星聂祚仁
Owner BEIJING UNIV OF TECH
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