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Method of manufacturing manganese tetrafluoride

A technology of manganese tetrafluoride and fluorinating agent, applied in the direction of manganese halide, etc., can solve the problems of difficult commercial production and low conversion rate of MnF4

Inactive Publication Date: 2007-08-29
SHOWA DENKO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is to obtain MnF 4 has low conversion and must be sublimated and collected by heating for MnF 4 Synthetic Complex Devices
Another disadvantage is that the process of sublimation and condensation must be carried out, making commercial production difficult

Method used

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  • Method of manufacturing manganese tetrafluoride
  • Method of manufacturing manganese tetrafluoride
  • Method of manufacturing manganese tetrafluoride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In the box (6) with controlled dew point, 4500g manganese difluoride (MnF 2 ) placed on the tray ((5) in Figure 2) of the reactor (4) included in the structure of the test device (Figure 1).

[0037] The reactor (4) was evacuated, fluorine gas was fed until the pressure P was 2.0 MPa, and the reactor (4) was kept at a temperature T of 250° C. until the pressure became constant.

[0038] When the pressure P drops below 1.0 MPa, feed fluorine gas into the reactor (4) until the pressure P rises to 2.0 MPa.

[0039] When the pressure P of the reactor (4) is stable, the process is considered as completed.

[0040] After the reactor (4) was evacuated and fed with nitrogen until its pressure reached room pressure, the fluorine-treated product was removed.

[0041] The product was weighed, and the composition of each reaction product was calculated based on the weight gain.

[0042] Next, the reaction product is ground in a bar mill (7) and placed in a reactor (4) where the ...

Embodiment 2-10

[0049] In a box with controlled dew point, 2500g of manganese difluoride (MnF 2 ) into the reactor (4) ((1) in Fig. 4) with a ball mill included in the structure of the test device (Fig. 3).

[0050] The reactor (4) was maintained to have a constant temperature T of 250°C. Evacuate the reactor (4) and feed in fluorine until the pressure P 1 to 2.0MPa and turn it off. The reactor (4) with the ball mill is rotated, and the reaction is carried out while pulverizing and crushing the manganese compound therein.

[0051] Pressure P is detected when necessary 2 When it is lower than 1.0MPa, feed fluorine gas into the reactor (4) until it returns to the pressure P of 2.0MPa 1 , and then turn it off.

[0052] When the pressure P of the reactor (4) is stable, the process is considered as completed.

[0053] After the reactor (4) was evacuated and fed with nitrogen until its pressure reached room pressure, the fluorine-treated product was removed.

[0054] The product was weighed,...

Embodiment 11-14

[0061] In a box with a controlled dew point, 2500 g of manganese fluoride monohydrate (MnF 2 ·H 2 O) Loading into the reactor (4) ((1) in Fig. 4) with ball mill included in the structure of the test apparatus (Fig. 3).

[0062] Evacuate the reactor (4) and feed in fluorine until the pressure P 1 is 6.0MPa, close it. The reactor with the ball mill was rotated, the reaction was carried out while pulverizing and crushing the manganese compound therein, and the heater was turned on so that the reactor (4) had a constant temperature T of 300°C.

[0063] Pressure P is detected when necessary 2 When it is lower than 5.0MPa, feed fluorine gas into the reactor (4) until it returns to the pressure P of 6.0MPa 1 , and then turn it off.

[0064] When the pressure P of the reactor (4) is stable, the process is considered as completed.

[0065] After the reactor (4) was evacuated and fed with nitrogen until its pressure reached room pressure, the fluorine-treated product was removed. ...

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Abstract

A method of manufacturing manganese tetrafluoride comprises reacting a manganese compound and a fluorinating agent at a temperature of 250-350° C. and a pressure of 1.0-10.0 MPs to fluorinate the compound, while constantly or discontinuously crushing or grinding the starting compound and the manganese compound being reacted. According lo the method, since. fluorine is deeply penetrated into the interior of the manganese salt particles, the ratio of conversion to manganese tetrafluoride, MnF4 can he improved.

Description

technical field [0001] The present invention relates to inorganic chemistry and to methods for the preparation of manganese compounds, more particularly to methods for the preparation of their halogenated products, namely the preparation of manganese tetrafluoride MnF 4 Methods. Background technique [0002] Manganese tetrafluoride is used in the chemical industry as a strong oxidizing agent and as a source for the preparation of pure fluorine gas. As for manganese tetrafluoride, for example, a method for producing fluorine gas is known [Russian Federation Patent 2,221,739, classification number C01B7 / 20, publication date April 1, 2004]. This method uses, for example, salts with high fluorine content (potassium hexafluoride KF 6 and manganese tetrafluoride MnF 4 ) and for example K 3 NiF 7 、K 2 NiF 6 and K 2 CuF 6 Other salts of and compounds like them as starting compounds. [0003] It is also known to prepare MnF 4 method, which uses terbium tetrafluoride as a f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/06
CPCC01G45/06
Inventor 鸟巢纯一冈正和A·S·库兹涅佐夫Y·A·彼得罗夫
Owner SHOWA DENKO KK
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