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Non-manganese element-containing trimanganese tetraoxide complex, preparation method, used reaction system and uses thereof

A technology of manganese tetroxide and compound, applied in the directions of manganese oxide/hydroxide, electrical components, hybrid capacitor electrodes, etc., can solve the problems of slow conversion rate, low dissolved oxygen rate, impurities in the product, etc., and improve the solubility. and the dissolution rate, the effect of ensuring the reaction rate

Active Publication Date: 2018-01-05
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the low dissolved oxygen amount and low dissolved oxygen rate in the liquid phase under normal pressure are the main reasons for the slow conversion rate, long reaction time, low production efficiency, low oxygen utilization rate, and impurities in the products of the above two preparation methods.

Method used

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  • Non-manganese element-containing trimanganese tetraoxide complex, preparation method, used reaction system and uses thereof
  • Non-manganese element-containing trimanganese tetraoxide complex, preparation method, used reaction system and uses thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0110] Example 1 Weigh 90.0 g of the newly prepared manganese hydroxide solid, 2.0 g of the newly prepared magnesium hydroxide colloid, and 1.0 L of purified water and add them to the normal-pressure reactor; extract 0.8 L of the reaction liquid mixture in the reactor at one time and feed it into micro-nano bubbles The generator is fed with air to obtain a liquid-gas mixture containing air micro-nano bubbles. The average diameter of the micro-nano bubbles in the liquid-gas mixture is 15.1 μm, the oxygen content in the liquid-gas mixture is 28 mg / L, and the volume ratio of the gaseous oxygen in the micro-nano bubbles to the reaction liquid mixture is 0.17. Then put the liquid-gas mixture into the reaction kettle, react at room temperature and normal pressure for 2.0 h, and the obtained solid phase is magnesium-containing trimanganese tetraoxide compound. A part of magnesium ions in the composite enters the trimanganese tetraoxide crystal lattice in the form of lattice substitut...

Embodiment 2

[0111] Example 2 Weigh 68.0 g of manganese monoxide solids, 8.0 g of lithium chloride and 4.0 L of pure water into the reactor, and in the reactor, 20.0 L of the liquid-gas mixture of water with micro-nano bubbles of oxygen and carbon dioxide are introduced into the reactor at one time. . Oxygen and carbon dioxide in the gas account for 98.0vol% and 2.0vol% respectively, the average diameter of micro-nano bubbles is 5.8μm, and the content of oxygen in the liquid-gas mixture containing micro-nano bubbles is 56mg / L. The gaseous oxygen in the micro-nano bubbles reacts with The volume ratio of the liquid mixture was 0.62. The temperature was raised to 90°C under normal pressure for 0.5h reaction, and the obtained solid phase was lithium-containing trimanganese tetraoxide complex. The composite is a mixture of trimanganese tetraoxide phase and lithium carbonate phase, both of which have particle sizes less than 100nm.

Embodiment 3

[0112] Example 3 Weigh 70.0 g of manganese monoxide solid, 1.6 g of ferric titanate and 2.4 L of pure water into a high-pressure reactor, and continuously feed a liquid-gas mixture of water containing micro-nano bubbles of air and argon into the reactor , the flow rate of liquid-gas mixture is 5.0L / h. Air and argon account for 90.0vol% and 10.0vol% respectively in the gas. The average diameter of the micro-nano bubbles is 0.2μm. The volume ratio of the reaction liquid mixture was 9.08. Raise the temperature from the pressure to 190°C and react for 0.5h, and the obtained solid phase is a manganese tetraoxide complex containing iron and titanium. The composite is a mixture of trimanganese tetraoxide phase and iron titanate phase, and the particle size reaches 1.5 μm.

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Abstract

The present invention relates to a preparation method and a preparation system of a trimanganese tetraoxide complex. The preparation method comprises: introducing micro-nano gas bubbles into a reaction liquid mixture containing a manganese source and a non-manganese element-derived raw material to obtain a reaction liquid-gas mixture, and carrying out a reaction to obtain a non-manganese element-containing trimanganese tetraoxide complex, wherein the micro-nano gas bubbles contain oxidizing gas, can be introduced along with a solvent, can be directly introduced along with the reaction mixture,can be continuously introduced, and can further be introduced in one time. According to the present invention, by introducing the micro-nano gas bubbles containing the oxidizing gas into the reactionsystem containing the manganese source and the non-manganese element-derived raw material, the oxidation reaction rate is improved, and the oxidation reaction time is shortened; and the generation rate of the trimanganese tetraoxide complex is increased, the particle size of the trimanganese tetraoxide complex is reduced, and the develop integrity of the trimanganese tetraoxide complex crystal and the mixing uniformity of the complex are improved.

Description

technical field [0001] The invention belongs to the field of preparation of trimanganese tetraoxide compound, in particular to a preparation method of trimanganese tetraoxide compound, a reaction system used in the preparation method and the application of the reaction system, the trimanganese tetraoxide compound The preparation method of the compound can obviously shorten the reaction time, increase the manganese content, reduce the generation of impurities and impurity phases, improve the purity of the target trimanganese tetraoxide compound, and regulate the structure and performance of the trimanganese tetraoxide compound. Background technique [0002] Manganese is one of the common variable-valence metal elements, and its oxide forms are manganese monoxide, trimanganese tetraoxide, manganese trioxide, and manganese dioxide. The primary structural units of manganese oxides are basically the same, all of which are manganese-oxygen octahedra; the secondary structural units...

Claims

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Application Information

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IPC IPC(8): C01G45/02H01M4/50H01M4/1391H01G11/46
CPCY02E60/10
Inventor 卢旭晨王体壮
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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