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Low temperature catalytic graphitization method for polydivinylbenzene resin

A technology of divinylbenzene and polydivinylbenzene, applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the problems of high energy consumption and high price

Inactive Publication Date: 2015-05-06
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that catalytic graphitization is the integration of high-temperature technology and high-temperature equipment. On the one hand, expensive high-temperature furnace equipment is required; limited to laboratory research

Method used

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  • Low temperature catalytic graphitization method for polydivinylbenzene resin
  • Low temperature catalytic graphitization method for polydivinylbenzene resin
  • Low temperature catalytic graphitization method for polydivinylbenzene resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Using polydivinylbenzene resin as raw material, carbonyl iron as catalyst, so that the content of iron element in the carbon material is 12wt.%, the uniformly dispersed catalyst / polydivinylbenzene resin is heated to 600°C at 1°C / min After 2 hours of heat preservation, the temperature was raised to the graphitization temperature (800-1400°C) at a heating rate of 3°C / min, and held for 4 hours. The XRD analysis of the obtained samples showed that ( figure 1 ): In the presence of catalyst iron carbonyl, even after heat treatment at 800 °C, the (002) diffraction peak of graphite does not appear in resin carbon, showing that carbonyl iron has no catalytic effect on resin carbon at 800 °C, but with the heat treatment temperature gradually increasing, The (002) diffraction peak of resin carbon appears and moves to the right, and the diffraction peak is also significantly enhanced, and the (100) diffraction peak of graphite is also clearly visible under heat treatment at 1400 ° C...

Embodiment 2

[0017] Using polydivinylbenzene resin as raw material, carbonyl iron as catalyst, so that the content of iron element in the carbon material is 3%, 6%, 9%, 15wt.%, the uniformly dispersed catalyst / polydivinylbenzene The temperature of the resin was raised to 600°C at 1°C / min, and then heated to graphitization temperature at a rate of 3°C / min for 2 hours to graphitization temperature of 1400°C. figure 2 ): As the content of iron in iron carbonyl increases from 3% to 15%, the (002) and (100) diffraction peaks of the graphite structure gradually increase, and the diffraction angle gradually moves to the right, increasing from 26.14° to 26.42°, and the corresponding The interlayer spacing decreased from 0.3407nm to 0.3370nm, and the degree of graphitization also increased from 38.37% to 81.40%. The analysis of the spectrum shows that with the increase of the carbonyl iron content of the catalyst, the degree of graphitization of the resin gradually increases, and carbonization at 1...

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Abstract

The invention relates to a low temperature catalytic graphitization method for polydivinylbenzene (PDVB). The low temperature catalytic graphitization method comprises the following steps of: mechanically mixing a certain quantity of carbonyl iron and PDVB resin for 1 hour; observing the affects of the iron content in a catalyst and the calcining temperature to the catalytic graphitization of the polydivinylbenzene resin; analyzing the structural change and the appearance of the PDVB resin through an X-ray diffraction spectrum and a high-resolution electron microscope. The application of the low temperature catalytic graphitization method lies in that the PDVB resin is carbonized at the temperature of 1400 DEG C, and a proper amount of catalyst is added, so that the low temperature catalytic graphitization of the resin can be realized. The method provided by the invention has the advantages that the PDVB resin is used as a carbon source, the reaction process is carried out in a high temperature furnace in the existence of high-purity nitrogen gas, and the thermal treatment temperature ranges from 800 DEG C to 1400 DEG C.

Description

technical field [0001] The invention relates to a low-temperature catalytic graphitization method of polydivinylbenzene in the presence of a catalyst. Background technique [0002] Graphitization is a solid-phase reaction in which an amorphous state is transformed into a crystalline state, and it transforms the planar grid of hexagonal carbon atoms from a two-dimensional disordered arrangement (chaotic layer structure, or amorphous carbon) to an ordered arrangement in a three-dimensional space. High temperature heat treatment process of graphite structure. The graphitization effect of carbon materials is controlled by heat treatment temperature and holding time. At 1400 ° C, the graphitization process of carbon materials is very slow, so slow that it is difficult to observe, but after adding some catalysts, even at this temperature or even The graphitization process can also be clearly observed at lower temperatures, that is, catalytic graphitization. The research on the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/04C01B32/205
Inventor 谭德新王艳丽邢宏龙
Owner ANHUI UNIV OF SCI & TECH
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