Preparation method of spherical lithium metatitanate solid tritium fertile material

A lithium metatitanate and tritium multiplication technology, applied in the field of nuclear fusion, can solve problems such as environmental pollution, difficult to control hydrolysis rate, irregularity, etc., and achieve the effect of simple equipment requirements, low production cost, and short production cycle

Inactive Publication Date: 2014-02-19
YANGZHOU UNIV
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  • Abstract
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Problems solved by technology

But the production or product problem that this method exists is: TiCl 4 The hydrolysis rate in water is too fast, although ammonia is added as an inhibitor, the hydrolysis rate is still difficult to control, TiCl 4 Titanium dioxide formed by hydrolysis is easy to agglomerate, and its appearance is disordered. Lithium metatitanate synthesized by this titanium dioxide is also disordered and irregular in appearance, without geometric advantages, and ammonia is easy to cause environmental pollution.

Method used

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  • Preparation method of spherical lithium metatitanate solid tritium fertile material
  • Preparation method of spherical lithium metatitanate solid tritium fertile material
  • Preparation method of spherical lithium metatitanate solid tritium fertile material

Examples

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Effect test

Embodiment 1

[0025] Preparation of titanium dioxide balls: Add 0.1ml of 0.1mol / L potassium chloride solution to 50ml of absolute ethanol, stir evenly with a mechanical stirrer, add 2ml of tetrabutyl titanate dropwise, stir mechanically for 1 hour, and let it stand at room temperature After reacting for 24 hours, the solid phase was obtained by centrifugation, and the solid phase was washed and dried to obtain titanium dioxide balls. The centrifuged liquid phase is ethanol, which is recovered and reused by distillation.

[0026] Preparation of spherical lithium metatitanate: take LiOH·H with a concentration of 0.2 mol / L 2 20ml of O aqueous solution, then add 0.1g of titanium dioxide balls, and continue to sonicate for 25 minutes.

[0027] After the reaction, centrifuge, take the solid phase and wash it three times with deionized water and absolute ethanol respectively, and then calcined at 500°C for 5 hours after drying, and the final product is spherical lithium metatitanate.

Embodiment 2

[0029] Preparation of titanium dioxide balls: Add 0.5ml of 0.1mol / L potassium chloride solution to 120ml of absolute ethanol, stir evenly with a mechanical stirrer, add 2.5ml of tetrabutyl titanate dropwise, stir mechanically for 1 hour, and After static reaction for 24 hours, the solid phase was obtained by centrifugation, and the solid phase was washed and dried to obtain titanium dioxide balls. The centrifuged liquid phase is ethanol, which is recovered and reused by distillation.

[0030] Preparation of spherical lithium metatitanate: take Li with a concentration of 0.4 mol / L 2 CO 3 30ml of aqueous solution, then add 0.04g of titanium dioxide balls, and continue to sonicate for 25 minutes. The condition of sonication is: 52KHz, placed in a water bath at 150°C for 5h.

[0031] Centrifuge after the reaction, take the solid phase and wash it three times with deionized water and absolute ethanol respectively, and then calcined at 700°C for 5 hours after drying, and the...

Embodiment 3

[0033] Preparation of titanium dioxide balls: Add 0.4ml of 0.1mol / L potassium chloride solution to 80ml of absolute ethanol, stir evenly with a mechanical stirrer, add 3ml of tetrabutyl titanate dropwise, stir mechanically for 1 hour, and let it stand at room temperature After reacting for 24 hours, the solid phase was obtained by centrifugation, and the solid phase was washed and dried to obtain titanium dioxide balls. The centrifuged liquid phase is ethanol, which is recovered and reused by distillation.

[0034] Preparation of spherical lithium metatitanate: take 40ml of a soluble lithium salt solution with a concentration of 0.2 mol / L, then add 0.1g of titanium dioxide balls, and continue to sonicate for 25 minutes. 10h. The product was centrifuged, and the solid phase was washed three times with deionized water and absolute ethanol, then dried and calcined at 800°C for 3h. The final product is spherical lithium metatitanate.

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Abstract

The invention relates to a preparation method of a spherical lithium metatitanate solid tritium fertile material, which belongs to the technical field of nuclear fusion. The method comprises the following steps: preparing titanium dioxide balls, mixing an aqueous solution of soluble lithium salt and titanium dioxide balls for performing ultrasonic treatment, then reacting, centrifuging after completing the reaction, taking a solid phase for washing, and drying and calcining to obtain spherical lithium metatitanate. The preparation method has the advantages that a reactant ethanol can be recovered and repeatedly used, the preparation cost is low, the equipment requirement is simple, and the preparation period is short. The prepared spherical lithium metatitanate belongs to a monoclinic crystal type, the diameter is 200nm to 400nm, structure is uniform, the crystallization degree is good, a pore structure is formed in the inner part, the prepared spherical lithium metatitanate has reasonable lithium atom concentration, low activity and high chemical stability, and has good compatibility with a combination material, and the spherical lithium metatitanate has good thermal stress and fission strength due to complex geometry spherical morphology.

Description

technical field [0001] The invention belongs to the technical field of nuclear fusion, in particular to a preparation method of a basic material of a tritium multiplication agent. 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 of the reactor core to react with the lithium-containing material in the breeding cladding to produce tritium to realize tritium. proliferation. The high-energy neutrons produced by the D-T fusion reaction, after proper moderation, bombard the breeder to continuously p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/462C04B35/626
Inventor 刁国旺陈铭李伟沈枭
Owner YANGZHOU UNIV
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