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Method for preparing spin ladder compound

A compound and ladder-like technology, which is applied in the field of preparation of the spin-ladder structure compound Sr14Cu24O41, can solve the problems of many impurities, waste of energy and time, and achieve the effects of reducing energy consumption and human resources, increasing product particle size, and simple and rapid methods

Inactive Publication Date: 2010-10-20
汪丽莉
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Problems solved by technology

[0003] In order to solve the problems of excessive impurities, waste of energy and time in the existing polycrystalline preparation methods

Method used

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  • Method for preparing spin ladder compound
  • Method for preparing spin ladder compound
  • Method for preparing spin ladder compound

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Embodiment Construction

[0021] The present invention will be further explained below.

[0022] A method for preparing spin ladder structure compound, the raw material is: Sr(NO 3 ) 2 , Cu(NO 3 )2*3H 2 O, citric acid, ethylene glycol and double distilled water.

[0023] Proceed as follows:

[0024] a. According to the required preparation Sr 14 Cu 24 O 41 Corresponding to the ratio of strontium to copper (14:24), weigh 0.014mol of Sr(NO 3 ) 2 And 0.024mol of Cu(NO 3 ) 2 *3H 2 O;

[0025] b. Dissolve the above substances in 150ml of double distilled water;

[0026] c. Weigh citric acid in a ratio of 3:1 metal moles: citric acid moles and add it to the solution obtained in step b, and add 8ml-12ml of ethylene glycol;

[0027] d. Stir the above mixture under a magnetic stirrer for 1 hour until a uniform and stable blue sol is formed;

[0028] e. Put the blue sol on a resistance furnace to heat and evaporate (control the output voltage of the electric furnace to 100V). Because citric acid is a strong chelating agent,...

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Abstract

The invention relates to a method for preparing a spin ladder compound Sr14Cu24O41, which comprises the following steps of: taking 0.014 mol of Sr(NO3)2 and 0.024 mol of Cu(NO3)2*3H2O in a ratio of Sr to Cu of 14:24, and dissolving in double distilled water; weighing citric acid in a molar ratio of metal to citric acid of 3:1, adding the citric acid into the solution, and adding 8 to 12ml of glycol; stirring the solution for 1 hour until the solution forms blue sol; the heating and evaporating the blue sol, grinding the obtained substance, and firing the ground substance in a jade crucible at 850 DEG C for 10 hours; pressing the fired substance into a circular sheet with the diameter of 15mm and the thickness of 5mm; and finally, putting the circular sheet in the environment of 940 DEG C for 12 hours. The reaction temperature and heat preservation time required by the method are greatly reduced, and energy consumption and manpower resource are greatly reduced on the premise of maintaining the quality of the prepared sample.

Description

Technical field [0001] The invention relates to a spin ladder structure compound Sr 14 Cu 24 O 41 The preparation method. Background technique [0002] The traditional method for preparing spin ladder-like structure compounds requires ball milling with a planetary ball mill to achieve a uniform mixing effect, but it is easy to introduce impurities in the ball mill bead fragments. In addition, the traditional polycrystalline preparation method requires pre-burning in a muffle furnace in the temperature range of 850°C to 950°C for many times, and after each pre-burning, it needs to be continuously rolled with a grinding bowl, which wastes a lot of energy and time. Summary of the invention [0003] To solve the problems of excessive impurities, waste of energy and time in the existing polycrystalline preparation method. The invention provides a method for preparing a spin ladder structure compound Sr14Cu24O41. [0004] The technical scheme of the present invention is as follows: [00...

Claims

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Application Information

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IPC IPC(8): C04B35/622C04B35/45
Inventor 汪丽莉石兢
Owner 汪丽莉
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