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Nano-holmium oxide preparation method

A kind of holmium oxide and nanotechnology, which is applied in the direction of chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve the problems of uneven product particles and poor dispersion, and achieve good dispersion, simple process and large specific surface Effect

Inactive Publication Date: 2017-06-13
CHANGZHOU GEOQUIN NANO NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the preparation of holmium oxide mainly uses ammonia-containing precipitants, which have certain problems in environmental protection, and the product particles are not uniform and the dispersion is not good.

Method used

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  • Nano-holmium oxide preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example 1: 1 kg of the final product nano holmium oxide was added into the reaction kettle to prepare a concentration of 0.3mol / L with pure water and a volume of holmium chloride solution of 17.64L after calculation. The measured temperature was 15 degrees, and then weighed Analyze pure sodium carbonate 1KG, be mixed with pure water concentration and be 0.4mol / L, volume is 23.58L, temperature is 15 degrees, takes by weighing the polyethylene glycol 20000 surfactant of final product nano holmium oxide mass ratio 10%, is 100g, add 1L pure water, heat to dissolve it into a liquid, put polyethylene glycol 20000 into the feed liquid holmium chloride, mix and stir for 15min, and finally add sodium carbonate evenly, and the dropping time is 35min, from which it can be calculated The adding speed is 0.67L / min, and the flow rate and adding speed are controlled by the governor. After the dropwise addition, continue to stir for 0.5 hours, age for 2 hours, soak and wash with hot pur...

Embodiment 2

[0013] Example 2: The final product nano holmium oxide 5KG was calculated and added into the reaction kettle with pure water to prepare a holmium chloride solution with a concentration of 0.4mol / L and a volume of 66.16L. The measured temperature was 17 degrees, and then weighed Analytical pure sodium carbonate 5KG, prepared with pure water to a concentration of 0.4mol / L, a volume of 117.92L, a temperature of 18 degrees, weighed the final product nano holmium oxide quality 3% polyethylene glycol 4000 surfactant, 150g , add 4L of pure water, heat to dissolve it into a liquid, put polyethylene glycol 4000 into the feed liquid holmium chloride and mix and stir for 15 minutes, and finally add sodium carbonate dropwise evenly, and the dropping time is 107 minutes, from which it can be calculated The speed is 1.1L / min, and the flow rate and adding speed are controlled by the governor. After the dropwise addition, continue to stir for 0.5 hours, age for 3 hours, soak and wash with hot ...

Embodiment 3

[0014] Example 3: 1kg of the final product nano holmium oxide was calculated and added into the reactor with pure water to prepare holmium chloride with a concentration of 0.1mol / L and a volume of 52.93L. The measured temperature was 15 degrees, and then weighed and analyzed Pure sodium carbonate 1KG, is mixed with pure water concentration and is 0.2mol / L, and volume is 47.17L, and temperature is 15 degrees, takes by weighing the polyethylene glycol 2000 surfactant of final product nano holmium oxide quality 15%, is 150g, Add 1L of pure water, heat to dissolve it into a liquid, put polyethylene glycol 2000 into the material liquid holmium chloride, mix and stir for 15 minutes, and finally add sodium carbonate dropwise evenly, and the dropping time is 45 minutes, from which the adding speed can be calculated It is 1.05L / min, and the flow rate and adding speed are controlled by the governor. After the dropwise addition, continue to stir for 0.5 hours, age for 2 hours, soak and wa...

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Abstract

The invention relates to a nano-holmium oxide preparation method and belongs to the technical field of preparation of rare earth compounds. The nano-holmium oxide preparation method is characterized in that holmium oxide has the specific surface area of about 20 m<2> / g and the grain size of 50-70 nm, and grains are uniformly distributed in grain size. The nano-holmium oxide preparation method is simple in process condition, low in production cost and easy for realization of industrial production, and the whole preparation process conforms to the environmental requirement.

Description

technical field [0001] The invention belongs to the field of preparation of rare earth materials, and in particular relates to a method for preparing nano holmium oxide. Background technique [0002] The main uses of holmium oxide are: (1) Holmium-doped yttrium aluminum garnet (Ho: YAG) can emit 2 μm laser, and human tissue has a high absorption rate of 2 μm laser, which is almost 3 orders of magnitude higher than Hd: YAG. Therefore, when Ho:YAG laser is used for medical surgery, it can not only improve the efficiency and accuracy of the operation, but also reduce the thermal damage area to a smaller size. (2) In the magnetostrictive alloy Terfenol-D, a small amount of holmium can also be added to reduce the external field required for the saturation magnetization of the alloy. (3) In addition, optical communication devices such as optical fiber lasers, optical fiber amplifiers, and optical fiber sensors can be made with holmium-doped optical fibers, which will play a more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F17/00B82Y30/00
Inventor 王鹭
Owner CHANGZHOU GEOQUIN NANO NEW MATERIALS
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