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Method for preparing strontium fluoride crystal

A technology of strontium fluoride and crystals, which is applied in the field of biomimetic preparation of strontium fluoride crystals, can solve problems such as high cost, high energy consumption, and complicated process, and achieve the effects of simple operation, low energy consumption, and low preparation cost

Inactive Publication Date: 2021-07-13
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the disadvantages of high energy consumption, complicated process and high cost in the existing preparation method of strontium fluoride crystal, the present invention proposes a fluorinated strontium fluoride crystal with mild reaction conditions, low energy consumption, high purity, simple process and low cost Strontium crystal preparation method

Method used

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  • Method for preparing strontium fluoride crystal

Examples

Experimental program
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Effect test

Embodiment 1

[0013] In the connected reaction device with 2 left and right ear grooves and 3 left, middle and right barrier plates, according to the molar ratio, strontium: fluorine = 1: 2.15, strontium chloride was added to the left ear groove, and ammonium fluoride was added to the left ear groove. in the right ear slot. Then, it is 0.15% glycine solution that contains mass ratio ratio concentration to add in the connected reactor, makes the liquid level of glycine solution higher than left ear groove and right ear groove upper edge 1cm, to guarantee the reaction in left ear groove, right ear groove The substances are connected through the mixture solution. Put the lid on the connected reactor, and let it stand for 7 days to react. The product was filtered, washed, and dried at 105°C for 1 h to obtain strontium fluoride crystals. The yield of strontium fluoride crystals was 99.5%, and the purity was 99.6%.

Embodiment 2

[0015] In the connected reaction device with 2 left and right ear grooves and 3 left, middle and right barrier plates, according to the molar ratio, strontium: fluorine = 1: 2.10, strontium chloride was added to the left ear groove, and ammonium fluoride was added to the left ear groove. in the right ear slot. Then, it is 0.10% glycine solution that contains mass ratio specific concentration to add in the connected reactor, makes the liquid level of glycine solution higher than left ear groove and right ear groove upper edge 1cm, to guarantee the reaction in left ear groove, right ear groove The substances are connected through the mixture solution. Put the lid on the connected reactor, and let it stand for 7 days to react. The product was filtered, washed, and dried at 105°C for 1 h to obtain strontium fluoride crystals. The yield of strontium fluoride crystals was 99.0%, and the purity was 99.9%.

Embodiment 3

[0017] In the connected reaction device with 2 left and right ear grooves and 3 left, middle and right barrier plates, according to the molar ratio, strontium: fluorine = 1: 2.20, strontium chloride was added to the left ear groove, ammonium fluoride was added to in the right ear slot. Then, it is 0.20% glycine solution that contains mass ratio specific concentration to add in the connected reactor, make the liquid level of glycine solution be higher than left ear groove and right ear groove upper edge 1cm, to guarantee the reaction in left ear groove, right ear groove The substances are connected through the mixture solution. Put the lid on the connected reactor, and let it stand for 7 days to react. The product was filtered, washed, and dried at 105°C for 1 h to obtain strontium fluoride crystals. The yield of strontium fluoride crystals was 99.9%, and the purity was 99.3%.

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Abstract

The invention provides a method for preparing a strontium fluoride crystal. Strontium chloride is used as a strontium source reactant, ammonium fluoride or sodium fluoride is used as a fluorine source reactant, glycine is used as a biological regulating agent, and the strontium fluoride crystal is prepared. Strontium chloride, ammonium fluoride or sodium fluoride and a glycine solution are sequentially added into a communicated reaction container provided with a left ear groove, a right ear groove, a left barrier plate, a middle barrier plate and a right barrier plate, and after the reaction is finished, the product is filtered, washed and dried to obtain the strontium fluoride crystal. The purity of the prepared strontium fluoride crystal reaches 99.0%-99.9%, the yield reaches 99.0%-99.9%, and the purity and crystallinity are high. The method has the characteristics of simple process, mild reaction conditions, low energy consumption, low cost and the like.

Description

technical field [0001] The invention relates to a method for preparing strontium fluoride crystals, in particular to a method using strontium chloride as a strontium source reactant, ammonium fluoride or sodium fluoride as a fluorine source reactant, and glycine as a biological regulator, prepared by a bionic method Strontium fluoride crystal method. The specific technical field of the invention is the preparation of strontium fluoride crystals. Background technique [0002] Strontium fluoride crystal has good optical properties, anion conductivity and mechanical properties. It is an extremely important functional material and has been widely used in the fields of optical fiber communication, microelectronics, laser, optoelectronics, optics, solar energy and biology. The existing methods for preparing strontium fluoride crystals have the disadvantages of high energy consumption, complicated process and high cost. [0003] In order to overcome the disadvantages of high ener...

Claims

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Application Information

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IPC IPC(8): C01F11/22
CPCC01F11/22C01P2006/80C01P2002/72
Inventor 曹译蕾钟学明李珊杨旭芳陈丹婷丁练李华
Owner NANCHANG HANGKONG UNIVERSITY
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