Preparation method of lithium zirconate porous microsphere

A technology of porous microspheres and lithium zirconate, applied in the field of porous materials, can solve problems such as difficult to meet the requirements of adsorption materials and performance, and achieve the effect of high temperature reaction conditions, simple equipment requirements, and simple processes

Active Publication Date: 2015-04-29
ZHEJIANG UNIV
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  • Claims
  • Application Information

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Problems solved by technology

Difficult to meet ceramic tritium breeding materials and CO 2 Adsorption materials and performance requirements

Method used

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  • Preparation method of lithium zirconate porous microsphere

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Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0036] Embodiment 1-1, the preparation method of lithium zirconate porous microspheres, comprises the following steps:

[0037] 1) Dissolve 0.5g of emulsifier OP-10 and 1g of Tween80 in 30g of deionized water to obtain the water phase required by the emulsion method, and continue stirring for 1 hour at a speed of 1000r / min in a high-speed disperser to obtain an aqueous phase solution;

[0038] 2), 2.0g of acetylacetone, 8.4g of zirconium n-propoxide (0.026mol) and 10g of n-octanol were mixed, and stirred at a speed of 500r / min at room temperature for 1h, as the oil phase required by the emulsion method; thereafter, to the obtained oil Add 0.5 g of Span 80, 0.5 g of polyacrylamide and 13.6 g (0.052 mol) of lithium methoxide into the phase, and continue stirring (500 r / min) at room temperature for about 1 hour to obtain a homogeneous and clear solution.

[0039] (3) According to step 2) the obtained uniform clear solution and step 1) gained water phase solution are 1:10 mass rat...

Embodiment 1-2

[0042] Embodiment 1-2, changing the amount of polyacrylamide from 0.5 g to 1.0 g; the rest are the same as in embodiment 1-1.

[0043]The SEM and particle size distribution tests of lithium zirconate porous microspheres show that the porous microspheres all have a smooth surface structure with a size of 20-40 μm. ~2.1 μm.

Embodiment 1-3

[0044] Embodiment 1-3, the amount of polyacrylamide is changed from 0.5g to 1.5g, and the rest are the same as embodiment 1-1.

[0045] The SEM and particle size distribution tests of lithium zirconate porous microspheres show that the porous microspheres have a smooth surface structure with a size of 20-40 μm, and the interior of the microspheres is a structure of interconnected and closed pores, and the closed pores have a diameter of 1.0 μm. ~2.5 μm.

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Abstract

The invention discloses a preparation method of a lithium zirconate porous microsphere. The preparation method comprises the following steps: 1) dissolving an emulsifier OP-10 and a surfactant into deionized water, stirring, and obtaining an aqueous phase solution; 2) mixing a chelating agent, zirconium n-propoxide and n-octyl alcohol, stirring, obtaining an oil phase required by an emulsion method, adding span-80, a phase separation inducer and a lithium source into the oil phase, and continuously stirring until the uniform and clear solution is obtained; 3) pouring the uniform and clear solution obtained in the step 2) into the aqueous phase solution, continuously stirring and emulsifying the solution for 22-26 hours at a revolving speed of 800-1200 rpm; 4) performing vacuum filtration, washing and drying to the product obtained in the step 3), so as to obtain the powdered lithium zirconate porous microspheres. The method is relatively simple in process; the reaction conditions are relatively mild; the lithium zirconate porous microsphere with high porosity can be prepared.

Description

technical field [0001] The invention belongs to the field of porous materials, in particular to a preparation method of lithium zirconate porous microspheres, in particular to a preparation method of lithium zirconate porous microspheres by an emulsion method combined with a sol-gel method. Background technique [0002] With the rapid development of social economy, the problems of human energy shortage and environmental degradation have become increasingly prominent, and clean, safe and renewable nuclear fusion energy has attracted the attention of countries all over the world. In order to realize the self-sustainability of tritium in the fusion reactor or fusion-fission hybrid reactor fuel, it is necessary to design the tritium breeding cladding in the reactor, and use the fusion neutrons generated by the D-T reaction in the core to react with the lithium-containing material in the breeding cladding to produce tritium to realize proliferation. [0003] There are many types...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/00
CPCC01G25/00C01P2004/03C01P2004/61C01P2006/16
Inventor 郭兴忠郝贵松谢园毛文奇杨辉
Owner ZHEJIANG UNIV
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