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High-efficiency synthesis method for high-purity molybdenum disulfide

A technology of molybdenum disulfide and molybdenum dioxide, which is applied in the direction of molybdenum sulfide, etc., can solve the problems of large particle size and low purity of molybdenum disulfide, and achieve the effects of fine particle size, low equipment requirements, and shortened reaction time

Active Publication Date: 2019-10-22
JINDUICHENG MOLYBDENUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for efficiently synthesizing high-purity molybdenum disulfide, which solves the problems of low purity and large particle size of molybdenum disulfide prepared in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for efficiently synthesizing high-purity molybdenum disulfide of the present invention is specifically implemented according to the following steps:

[0031] Step 1, according to the mass ratio of molybdenum trioxide powder and sulfur powder is 10:7.8, weigh 20g of molybdenum trioxide and sulfur powder in total, put them in a pulverizer and mix and pulverize them for 3 minutes to obtain mixed raw materials;

[0032] The mass purity of molybdenum trioxide powder is greater than 99.9%, and the average particle size is 0.5 μm to 50 μm;

[0033] The mass purity of sulfur powder is greater than 99.9%, and the average particle size is 0.5 μm to 50 μm;

[0034] Step 2, put the mixed raw material obtained after step 1 in the crucible, and add a small amount of molybdenum dioxide to the mixed raw material, then place it in the heat preservation jacket of the microwave tube atmosphere furnace, put the heat preservation jacket into the quartz tube, Afterwards, seal both ...

Embodiment 2

[0038] A method for efficiently synthesizing high-purity molybdenum disulfide of the present invention is specifically implemented according to the following steps:

[0039] Step 1, according to the mass ratio of molybdenum trioxide powder and sulfur powder is 10:12, weigh 20g of molybdenum trioxide and sulfur powder in total, put them in a pulverizer for mixing and pulverizing, and the pulverizing time is 5min to obtain a mixed raw material;

[0040] The mass purity of molybdenum trioxide powder is greater than 99.9%, and the average particle size is 0.5 μm to 50 μm;

[0041] The mass purity of sulfur powder is greater than 99.9%, and the average particle size is 0.5 μm to 50 μm;

[0042] Step 2, put 20g of the mixed raw material in the crucible, and add a small amount of molybdenum disulfide to the mixed raw material, put it in the insulation jacket of the microwave tube atmosphere furnace, put the insulation jacket in the quartz tube, and place the insulation jacket at both...

Embodiment 3

[0046] A method for efficiently synthesizing high-purity molybdenum disulfide of the present invention is specifically implemented according to the following steps:

[0047] Step 1, according to the mass ratio of molybdenum trioxide powder and sulfur powder is 10:14, weigh 20g of molybdenum trioxide and sulfur powder in total, mix and pulverize in the pulverizer, pulverization time is 8min, and obtain the mixed raw material;

[0048] The mass purity of molybdenum trioxide is greater than 99.9%, and the average particle size is 0.5 μm to 50 μm;

[0049] The mass purity of sulfur powder is greater than 99.9%, and the average particle size is 0.5 μm to 50 μm;

[0050] Step 2, put 20g of the mixed raw material in a silicon carbide boat crucible, put it in the insulation jacket of the microwave tube atmosphere furnace, put the insulation jacket in the quartz tube, seal the two ends of the microwave tube atmosphere furnace and turn on the Ar gas for 30 minutes After that, turn on t...

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Abstract

The invention discloses a high-efficiency synthesis method for high-purity molybdenum disulfide. The high-efficiency synthesis method comprises the following concrete steps: putting molybdenum trioxide powder or molybdenum dioxide powder and sulfur powder into a pulverizer for mixing and pulverizing so as to obtain a mixed raw material; and then filling a crucible with the mixed raw material, placing the crucible in the insulation sleeve of a microwave tube type controlled-atmosphere furnace, putting the insulation sleeve into a quartz tube, then sealing the two ends of the microwave tube typecontrolled-atmosphere furnace, introducing argon gas, turning one microwave heating, keeping warm, and carrying out cooling to room temperature so as to obtain high-purity molybdenum disulfide. According to the invention, molybdenum trioxide or molybdenum dioxide and sulfur are used as raw materials and subjected to microwave heating, and direct vulcanization is employed to synthesize high-puritymolybdenum disulfide, so synthesis in one shot is realizesd, and high pressure, thionation and decomposition are not needed, process flow is shortened, and production efficiency is improved; and molybdenum disulfide obtained by using the method has high purity and fine particle size, and is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a method for efficiently synthesizing high-purity molybdenum disulfide. Background technique [0002] Molybdenum disulfide is an important solid lubricant, and it is also known as "the king of advanced solid lubricants". It can be added to various greases to form a non-bonding colloidal state, which can increase the lubricity and extreme pressure properties of the grease. It is suitable for mechanical working conditions of high temperature, high pressure, high speed and high load, and prolongs the life of the equipment. The preparation methods of molybdenum disulfide mainly include physical purification and chemical synthesis. The physical purification method means that the molybdenum concentrate undergoes a series of physical impurity removal processes to achieve the purpose of purification, and finally the purity of molybdenum disulfide reaches more t...

Claims

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Application Information

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IPC IPC(8): C01G39/06
CPCC01G39/06
Inventor 崔玉青张晓张菊平唐丽霞唐军利席莎刘东新
Owner JINDUICHENG MOLYBDENUM CO LTD
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