Preparing method for manganese nitrate solution

A technology of nitric acid aqueous solution and manganese nitrate, applied in the direction of manganese nitrate, etc., can solve the problems of slow reaction rate and increased cost, and achieve the effect of increasing reaction rate and reducing production cost

Inactive Publication Date: 2014-12-24
BEIJING JINGJINGXING TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] As can be seen from the above reaction formula, this reaction is the reaction that metal manganese is dissolved and oxidized by nitric acid. When using a lower concentration of nitric acid (mass fraction is 65%, 58% etc.) to react, the reaction rate is slower. When

Method used

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  • Preparing method for manganese nitrate solution

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preparation example Construction

[0017] The preparation method of manganese nitrate solution provided by the present invention, its basis reaction equation is:

[0018] 3Mn+8HNO 3 →3Mn(NO 3 ) 2 +2NO+4H 2 o

[0019] In the embodiment of the present invention, in order to facilitate observation and judge the end time of the preparation reaction, it is necessary to ensure the complete reaction of nitric acid and manganese metal; therefore, the molar ratio of manganese metal to nitric acid in the nitric acid aqueous solution is 3:8. In this way, when the metal manganese is completely dissolved, it can be determined that the reaction is complete.

Embodiment 1

[0021] Add 3.0042g of 30% hydrogen peroxide aqueous solution into 8.1011g of 58% nitric acid aqueous solution and stir evenly to obtain a two-component oxidation solution, wherein the nitric acid has a mass fraction of 42.31%, and the peroxidized The mass fraction of hydrogen is 8.12%;

[0022] Weigh 1.5400 g of manganese metal, add it into the two-component oxidation solution, and react to obtain a pink manganese nitrate solution. The reaction time is 150 minutes, and the mass fraction of the manganese nitrate solution is 53.27%.

Embodiment 2～17

[0024] The manganese nitrate solutions of Examples 2 to 17 were prepared respectively by using the reactants and their amounts in Table 1, with reference to the preparation method described in Example 1, and the reaction times were recorded in Table 1.

[0025] The reactant kind, reactant consumption and reaction time of table 1 embodiment 2~17

[0026]

[0027] Note: the massfraction of nitric acid in the nitric acid aqueous solution used among the embodiment 2~9 is 58%; The massfraction of nitric acid in the nitric acid aqueous solution used among the embodiment 10~17 is 65%.

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Abstract

The embodiment of the invention discloses a preparing method for a manganese nitrate solution. The method comprises the following steps: mixing a nitrate solution and a hydrogen peroxide solution to obtain a double-component oxidizing solution; reacting after mixing the metallic manganese with the double-component oxidizing solution to obtain the manganese nitrate solution. According to the invention, after the double-component oxidizing solution is obtained through mixing the nitrate solution and the hydrogen peroxide solution, the manganese nitrate solution is obtained through the reaction of the obtained double-component oxidized solution with the metallic manganese. Compared with the method in the prior art that the manganese nitrate solution is obtained through the direct reaction of a nitrate solution with the metallic manganese, the preparing method provided by the utility model has the advantages that the reaction rate of the preparing method is obviously improved; besides, as reaction can be carried out by adopting nitrate with relatively lower concentration, and the production cost is reduced.

Description

technical field [0001] The invention relates to the field of solution preparation, in particular to a preparation method of manganese nitrate solution. Background technique [0002] Manganese nitrate solution is mainly used to manufacture manganese dioxide, and can also be used as catalyst, ceramic colorant, metal phosphating agent, analytical reagent, etc. Its preparation method is a lot, but, considering factors such as the purity of manganese source and price, at present, one of method that is used for preparing manganese nitrate solution in industry is to adopt metal manganese as manganese source and nitric acid to react to prepare manganese nitrate, its reaction The equation is as follows: [0003] 3Mn+8HNO 3 =3Mn(NO 3 ) 2 +2NO+4H 2 o [0004] As can be seen from the above reaction formula, this reaction is the reaction that metal manganese is dissolved and oxidized by nitric acid. When using a lower concentration of nitric acid (mass fraction is 65%, 58% etc.) to...

Claims

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Application Information

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IPC IPC(8): C01G45/08
Inventor 杨晓晶
Owner BEIJING JINGJINGXING TECH CO LTD
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