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Preparation method of multi-shape alkaline manganese phosphate microcrystal

A manganese phosphate and basic technology, applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve the problems of low product quality and complicated preparation methods, and achieve low preparation costs, simple process routes, and high purity. Effect

Inactive Publication Date: 2014-01-29
BOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the research on basic manganese phosphate mainly focuses on the preparation of basic manganese phosphate by precipitation method. There are relatively few studies on the morphology-controlled synthesis of basic manganese phosphate, and the preparation method is complicated and the product quality is not high.

Method used

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  • Preparation method of multi-shape alkaline manganese phosphate microcrystal
  • Preparation method of multi-shape alkaline manganese phosphate microcrystal
  • Preparation method of multi-shape alkaline manganese phosphate microcrystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Slowly add the 0.3 mol / L manganese chloride alcohol-water mixed solution dropwise into the 0.3 mol / L diammonium hydrogen phosphate alcohol-water mixed solution. The alcohol-water mixed solution is prepared by ethanol and water according to the volume ratio of 1:20, manganese chloride / diammonium hydrogen phosphate is calculated according to the molar ratio of 1:1, and the stirring speed is 70 rpm for 30 minutes. The mixed solution obtained is carried out hydrothermal reaction, and hydrothermal reaction temperature is at 200 ℃, and hydrothermal reaction time is 24 hours. After the hydrothermal reaction is completed, cool down to room temperature naturally, filter and wash the product obtained by the reaction, put it in an oven, and dry it at 150°C for 10 hours to obtain a basic manganese phosphate microcrystalline material. See SEM image diagram 2-1 and Figure 2-2 , it can be seen that the morphology of the microcrystal is a hexagonal prism, the length of the hexagona...

Embodiment 2

[0031] Slowly add the 0.1 mol / L manganese acetate alcohol-water mixed solution dropwise into the 0.1 mol / L diammonium hydrogen phosphate alcohol-water mixed solution. The alcohol-water mixed solution is prepared by ethanol and water at a volume ratio of 1:20, manganese acetate / diammonium hydrogen phosphate at a molar ratio of 1:1, and stirred and reacted at a stirring speed of 70 rpm for 30 minutes. The mixed solution obtained is subjected to hydrothermal reaction, and the hydrothermal reaction temperature is 220 ° C, and the hydrothermal reaction time is 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 180°C for 10 hours to obtain a basic manganese phosphate microcrystalline material. Topography SEM image see Figure 3-1 , Figure 3-2 and Figure 3-3 , it can be seen that the morphology of the microcrystal is a flower-like morphology a...

Embodiment 3

[0033] Slowly add the 0.1 mol / L manganese nitrate alcohol-water mixed solution dropwise into the 0.1 mol / L disodium hydrogen phosphate alcohol-water mixed solution. The alcohol-water mixed solution is prepared with ethylene glycol and water at a volume ratio of 1:20, manganese nitrate / disodium hydrogen phosphate at a molar ratio of 1:2, and stirred at a stirring speed of 70 rpm for 30 minutes. The mixed solution obtained is carried out hydrothermal reaction, and hydrothermal reaction temperature is at 200 ℃, and hydrothermal reaction time is 24 hours. After the hydrothermal reaction is completed, cool down to room temperature naturally, filter and wash the product obtained by the reaction, put it in an oven, and dry it at 150°C for 10 hours to obtain a basic manganese phosphate microcrystalline material. Topography SEM image see Pic 4-1 , Figure 4-2 and Figure 4-3 , it can be seen that the morphology of the microcrystal is a flower-like morphology assembled from micro-sh...

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Abstract

The invention belongs to the field of preparation of inorganic nonmetallic materials and particularly relates to a preparation method of a multi-shape alkaline manganese phosphate microcrystal. The preparation method comprises: uniformly dissolving a soluble bivalent manganese salt and a soluble phosphate in an alcohol / water mixed solution according to a certain proportion, fully stirring and mixing to react the components, then, carrying out a hydrothermal reaction in the alcohol / water mixed solution, filtering, washing and drying to obtain the target product. The process provided by the invention is convenient and feasible, high in purity, low in product preparation cost and good in product uniformity and dispersibility, the obtained product has microcrystals with various shapes, and a shape controllable synthesis process is realized. The multi-shape alkaline manganese phosphate microcrystal prepared by the preparation method provided by the invention can be widely applied in such industrial fields as chemical industry, electronics, building, glass, ceramics, photocatalytic disinfection, etc.

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 multi-morphology basic manganese phosphate. Background technique [0002] Basic manganese phosphate or hydroxyphosphate, molecular formula: Mn 2 (OH)PO 4 ; English name: Dimanganese Hydroxide Phosphate (V). Basic manganese phosphate is an important inorganic salt product and the main precursor for preparing manganese phosphate or manganese pyrophosphate. It is widely used in magnetic materials, ceramic glazes, feed additives, and phosphating industries. The physical and chemical properties of micro-nano functional materials largely depend on their crystal morphology and size. The control of crystallite morphology and particle size at the microscopic scale has become a very important research field, which will help to further explore the influence of the crystallographic morphology of materials on the p...

Claims

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Application Information

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IPC IPC(8): C01B25/37
Inventor 许家胜张杰
Owner BOHAI UNIV
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