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A kind of preparation method of lithium borate

A technology of lithium borate and lithium metaborate, applied in borates, chemical instruments and methods, boron compounds, etc., to achieve the effect of no need for post-treatment process and simple preparation process

Active Publication Date: 2021-09-17
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, Li obtained by this method 3 BO 3 HBO exists in 3 and Li 6 B 4 o 9 Impurities (S. Chang et al., Journal of Alloys and Compounds, 2017, 698(25), 814-818)

Method used

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  • A kind of preparation method of lithium borate
  • A kind of preparation method of lithium borate
  • A kind of preparation method of lithium borate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Because lithium oxide is easy to absorb water and deteriorate in the air, in an argon atmosphere glove box, mix lithium metaborate and lithium oxide at a molar ratio of 1:1 and place them in a stainless steel ball mill tank for sealing, with a ball-to-material ratio of 100: 1.

[0030] (2) Milling a ball mill jar containing a mixture of lithium metaborate and lithium oxide at a speed of 500 rpm for 36 hours to obtain a ball mill product.

[0031] figure 1 For the X-ray diffraction (XRD) spectrum of the ball mill product prepared in this embodiment, observe the standard PDF card of contrast lithium borate and find that there is no diffraction peak of the initial reactant lithium metaborate and lithium oxide in the ball mill product, only the diffraction peak of lithium borate . It shows that all the initial reactants have reacted to produce pure phase lithium borate.

[0032] figure 2 SEM photo of the ball milled product prepared for this example.

Embodiment 2

[0034] The preparation process is the same as that of Example 1, the only difference is that the ball-to-material ratio is adjusted to 200:1.

[0035] image 3 The XRD spectrum of the ball milled product prepared for this example. It can be seen from the XRD analysis results that there is only the diffraction peak of lithium borate in the ball milling product, indicating that after the ball milling reaction, lithium metaborate and lithium oxide completely react to form lithium borate. Figure 4 SEM photo of the ball milled product prepared for this example.

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Abstract

The invention discloses a preparation method of lithium borate, which is prepared by using lithium metaborate and lithium oxide as raw materials through mixed ball milling reaction. The preparation process is simple, no post-treatment is required, and it is suitable for large-scale industrial production; the prepared lithium borate is a pure phase without other impurities.

Description

technical field [0001] The invention belongs to the technical field of boron compounds, and in particular relates to a preparation method of lithium borate. Background technique [0002] Lithium borate (molecular formula is Li 3 BO 3 ) is a commonly used borate, which is widely used in metal smelting, glass preparation, enamel manufacturing and X-ray fluorescence analysis. Electrolyte density, improve electrolyte ionic conductivity (M.Tatsumisago et al., Journal of the Ceramic Society of Japan, 2017,125(6),433-437), or a new type of CO 2 Main components of adsorption materials (T. Harada et al., Journal of Materials Chemistry A, 2017, 5(42), 22224-22233). [0003] At present, the methods for producing lithium borate are mainly divided into liquid-phase method and solid-phase method. [0004] For example, Japanese Patent JP 62-096315 discloses a method for synthesizing lithium borate by a liquid phase method. Li 2 O and B 2 o 3 Heating in water produces Li 2 O·2B 2 o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B35/12
CPCC01B35/121C01P2002/72C01P2004/03
Inventor 高明霞李政隆潘洪革刘永锋
Owner ZHEJIANG UNIV
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