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Use of rare earth compound in graphitization and method for graphitization of resin carbon material

A technology of rare earth compounds and rare earth oxides, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., can solve the problems of high catalyst consumption and low purity of graphite products, etc. Achieve high purity, save catalyst consumption, and high degree of graphitization

Inactive Publication Date: 2009-07-08
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amount of these catalysts usually needs to be more than 10wt.% to produce obvious graphitization effect, the amount of catalyst is large, and the purity of graphite products is low
However, few studies have been conducted on the catalytic graphitization of rare-earth element oxides on non-graphitizable carbon materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] When Ln=Y, when the carbon source is furan resin, the content of Y in the carbon material can be 0-20wt.%. At this time, the content of Y can be 1wt.%, 4wt.%, 9wt.%, 15wt.%, etc. ; When 4wt.% is taken, it is the optimum concentration, and the graphitization of the carbon material obtained when the heat treatment temperature (HTT) is 2600 ° C is the best, d 002 The value is 3.357 , the degree of graphitization is as high as 97%. The specific preparation process is: Y(NO 3 ) 3 Mix well with furan resin in ethanol solution, cure at 150-200°C, and then 2 Carry out carbonization at 700°C in the atmosphere; finally place the obtained yttrium-containing carbon material in a graphite crucible and heat-treat it at the required high temperature (such as 2100°C, 2400°C or 2600°C) for about 2 hours under an argon atmosphere, that is, The desired product can be obtained.

Embodiment 2

[0025] When Ln=Y, when the carbon source is phenolic resin, the content of Y in the carbon material can be 0-20wt.%. At this time, the content of Y can be 1wt.%, 4wt.%, 9wt.%, 15wt.%, etc. ; When taking 4wt.%, it is the best concentration, and the degree of graphitization of the carbon material obtained at HTT=2600°C is the best, d 002 The value is 3.357 , The degree of graphitization reaches 97%. The specific preparation method is the same as in Example 1 above.

Embodiment 3

[0027] When Ln=Y, when the carbon source is pitch resin, the specific implementation is the same as in Example 1

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Abstract

The invention relates to application of a rare-earth compound in graphitization and a method for graphitizing a resin carbon material. The application lies in that a rare-earth oxide is used as a catalyst; and a carbon material taking resin as a carbon source is catalyzed and graphitized. The method comprises: using the resin as the carbon source; selecting the rare-earth compound as a catalyst raw material; converting the rare-earth compound into a catalyst rare-earth oxide in the process of resin carbonization; and carrying out the reaction process in a graphitizing furnace in the atmosphere of argon gas, wherein the temperature of heat treatment is not less than 2,000 DEG C.

Description

technical field [0001] The invention relates to the application of a rare earth compound in the graphitization of carbon materials and a preparation method for graphitizing resin carbon materials through the application of the rare earth compound. Background technique [0002] Graphitization is the transformation of disordered turbostratic carbon materials into ordered layered graphite structures after high temperature heat treatment (HTT). However, some thermosetting resin carbon materials are still difficult to graphitize even after heat treatment at a high temperature above 3000 °C. Therefore, in order to obtain a higher degree of graphitization of carbon materials after low-temperature graphitization treatment, people have carried out further research on the graphitization of carbon materials, using some inorganic materials, such as B, Ni, Al, Co, Fe, Mn , Ti, Ca, Mo, and W, to accelerate the graphitization of hard-graphitizable carbons, that is, to catalyze graphitizat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04B01J23/10
Inventor 陈金华易守军张小华肖雄刘露
Owner HUNAN UNIV
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