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A kind of preparation method of manganese pyrophosphate microcrystal with sheet shape

A technology for the morphology of manganese pyrophosphate and pyrophosphate, which is applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry and other directions, can solve the problems of unsatisfactory requirements, low production cost, low product purity, etc., and achieves easy operation control, The effect of low preparation cost and low impurity content

Inactive Publication Date: 2015-09-23
BOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned industrial methods are complicated in process, low in production cost, low in purity and high in impurity content, and cannot meet the requirements of modern industrial manganese pyrophosphate materials.

Method used

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  • A kind of preparation method of manganese pyrophosphate microcrystal with sheet shape
  • A kind of preparation method of manganese pyrophosphate microcrystal with sheet shape
  • A kind of preparation method of manganese pyrophosphate microcrystal with sheet shape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Slowly add the alcohol-water mixed solution of manganese sulfate with a concentration of 0.1 mol / L to the alcohol-water mixed solution with a concentration of 0.1 mol / L sodium pyrophosphate. The alcohol-water mixed solution is prepared by ethanol and water in a volume ratio of 1:10, manganese sulfate and sodium pyrophosphate in a molar ratio of 1:1, and stirred and reacted at a stirring speed of 60 rpm for 30 minutes. The mixed solution obtained was subjected to hydrothermal reaction, the hydrothermal reaction temperature was 180 ° C, and the hydrothermal reaction time was 24 hours. After the completion of the hydrothermal reaction, cool down to room temperature naturally, filter and wash the product obtained by the reaction, put it in an oven, and dry it at 120 °C for 8 hours to obtain a flaky pyrophosphate microcrystalline material. The product has been measured, and its sheet thickness is between 150-300 nm, length and width are between 10-20 mm, and the dispersion i...

Embodiment 2

[0032] Slowly add the 0.2 mol / L manganese sulfate alcohol-water mixed solution dropwise into the 0.2 mol / L sodium pyrophosphate alcohol-water mixed solution. The alcohol-water mixed solution is prepared by ethanol and water in a volume ratio of 1:10, manganese sulfate and sodium pyrophosphate in a molar ratio of 2:1, and stirred and reacted at a stirring speed of 60 rpm for 30 minutes. The mixed solution obtained was subjected to hydrothermal reaction, the hydrothermal reaction temperature was 180 ° C, and the hydrothermal reaction time was 24 hours. After the completion of the hydrothermal reaction, cool down to room temperature naturally, filter and wash the product obtained by the reaction, put it in an oven, and dry it at 120 °C for 8 hours to obtain a flaky pyrophosphate microcrystalline material. The product has been measured, and its sheet thickness is between 100-150 nm, length and width are between 15-30 mm, and the dispersion is uniform.

Embodiment 3

[0034] Slowly add the 0.3 mol / L manganese sulfate alcohol-water mixed solution dropwise into the 0.3 mol / L sodium pyrophosphate alcohol-water mixed solution. The mixed solution of alcohol and water is prepared by ethanol and water according to the volume ratio of 1:10, and the molar ratio of manganese sulfate and sodium pyrophosphate is 1:2, and the reaction is stirred and reacted at a stirring speed of 60 rpm for 30 minutes. The mixed solution obtained was subjected to hydrothermal reaction, the hydrothermal reaction temperature was 180 ° C, and the hydrothermal reaction time was 24 hours. After the completion of the hydrothermal reaction, cool down to room temperature naturally, filter and wash the product obtained by the reaction, put it in an oven, and dry it at 120 °C for 8 hours to obtain a flaky pyrophosphate microcrystalline material. The product has been measured, and its sheet thickness is between 200-400 nm, length and width are between 20-60 mm, and the dispersion ...

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Abstract

The invention belongs to the field of preparation of inorganic non-metallic materials, and in particular relates to a preparation method of flaky manganese pyrophosphate microcrystals, in which soluble divalent manganese salt and soluble pyrophosphate are uniformly dissolved in an alcohol / water mixed solution according to a certain ratio, After fully stirring the reaction, proceed to hydrothermal reaction in alcohol / water mixed solution, filter, wash and dry to obtain the target product. The process of the invention is simple and easy, the purity is high, and the product preparation cost is low. The obtained product has micron crystals with sheet-like morphology, the thickness is between 100-400 nm, the length and width are between 10-60 mm, and the uniformity and dispersion are good. . The manganese pyrophosphate microcrystal with sheet shape prepared by the invention can be widely used in industrial fields such as chemical industry, electronics, construction, glass and ceramics.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic non-metallic materials, and in particular relates to a preparation method of manganese pyrophosphate with sheet shape. Background technique [0002] Manganese pyrophosphate (manganese pyrophosphate) chemical formula Mn 2 P 2 o 7 . Molecular weight 283.82. Red-brown monoclinic crystal, melting point 1196 °C, relative density 3.707. Manganese pyrophosphate is an important inorganic salt product, which is widely used in catalysis, adsorption, host-guest assembly, optics, magnetism and other fields due to its special crystal structure. Therefore, the synthesis method of manganese pyrophosphate microcrystals has been attracting people's attention. [0003] At present, the main industrial production methods are as follows: at room temperature, using manganese nitrate and ammonium phosphate as raw materials, one-step synthesis of NH by direct precipitation in aqueous solution 4 PP...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/42
Inventor 许家胜张杰
Owner BOHAI UNIV
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