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Porous carbon material, precursor for porous carbon material, process for producing precursor for porous carbon material, and process for producing porous carbon material

一种多孔质碳、制造方法的技术，应用在碳的制备/纯化、化学仪器和方法、碳化合物等方向，能够解决填充其它原材料、难以制成细孔、不能形成连续的细孔等问题，达到提高耐性、导热性变高的效果

Active Publication Date: 2015-11-11
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in a general activation process, since the pores are formed in one direction from the surface of the carbon material to the inside, it is difficult to make a material with interconnected pores in which the pores are connected to each other, for example, it is difficult to fill the pores with other materials in a high proportion. Raw materials, etc., have issues in application to composite materials
[0004] In addition, Patent Document 1 describes a technique for obtaining porous carbon fibers by mixing a carbonizable material and a vanishing material. Compatibilizer cannot form continuous pores
[0005] Furthermore, Patent Document 2 describes a technique in which the porous carbon fibers described in Patent Document 1 are further activated to form pores to form activated carbon fibers. However, in the activation process as described above, the carbon material is mainly depleted from the surface of the carbon material by oxidation. Pores are formed, but continuous pores cannot be formed

Method used

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  • Porous carbon material, precursor for porous carbon material, process for producing precursor for porous carbon material, and process for producing porous carbon material
  • Porous carbon material, precursor for porous carbon material, process for producing precursor for porous carbon material, and process for producing porous carbon material
  • Porous carbon material, precursor for porous carbon material, process for producing precursor for porous carbon material, and process for producing porous carbon material

Examples

Experimental program
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Effect test

Embodiment 1

[0154] Put 70 g of polyacrylonitrile (MW 150,000) manufactured by Polysiens Co., Ltd., 70 g of polyvinylpyrrolidone (MW 40,000) manufactured by Sigma Aldrich, and 400 g of Waken Pharmaceutical Co., Ltd. In the flask, a uniform and transparent solution was adjusted at 150°C while stirring and refluxing for 3 hours. At this time, the concentration of polyacrylonitrile and the concentration of polyvinylpyrrolidone were respectively 13% by weight.

[0155] After the obtained DMSO solution was cooled to 25°C, the solution was discharged from a 0.6mmφ 1-hole die at a rate of 3ml / min, introduced into a coagulation bath of pure water maintained at 25°C, and then pulled at a speed of 5m / min to accumulate on the plate to obtain the raw silk. At this time, the air gap was 5 mm, and the immersion length in the coagulation bath was 15 cm. The obtained precursor was translucent and phase-separated.

[0156]The obtained raw silk was dried with a circulating dryer kept at 25° C. for 1 hour...

Embodiment 2

[0162] The weight of polyacrylonitrile was 60 g, the weight of polyvinylpyrrolidone was 60 g, and the concentration of polyacrylonitrile and polyvinylpyrrolidone at this time were respectively 11.5% by weight. In the same manner, a porous carbon material precursor having no pores and porous carbon fibers, ie, a porous carbon material, were obtained as infusible filaments.

[0163] The obtained porous carbon fibers, that is, the porous carbon material, had an average porosity of 45% in the central portion, and a structural period of the portion having a continuous porous structure was 0.12 μm. In addition, according to the pore diameter distribution curve, there are peaks of the pore diameter distribution at 70 and 250 nm, and when the cross-section is analyzed, the fiber diameter is 130 μm, and the thickness of the surface layer as a part not having a continuous porous structure is 7 μm, The structural period of the core layer at the center of the material, which is a portion ...

Embodiment 3

[0165] Except that polyvinylpyrrolidone (MW40,000) was changed to polyvinylpyrrolidone (MW360,000), by the same method as in Example 2, a porous carbon material precursor having no pores as an infusible precursor and Porous carbon fiber is a porous carbon material.

[0166] The obtained porous carbon fibers, that is, the porous carbon material, had an average porosity of 43% in the central portion, and a structural period of the portion having a continuous porous structure was 0.11 μm. In addition, according to the pore diameter distribution curve, there are peaks of pore diameter distribution at 60 and 230 nm, respectively, and if the cross-section is analyzed, the fiber diameter is 130 μm, and the thickness of the surface layer as a part not having a continuous porous structure is 6 μm, The structural period of the core layer at the center of the material, which is a portion having a continuous porous structure, was 0.31 μm. In addition, it can be seen that a uniform contin...

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Abstract

Provided is a porous carbon material which has a portion having a continuous multipore structure and a portion having no continuous multipore structure, and in which the central part has pore and matrix sizes that are even. This porous carbon material is easy to composite with other materials, is usable in various applications, and is extendable to various applications. Also provided are a precursor for the porous carbon material, a process for producing the precursor for the porous carbon material, and a process for producing the porous carbon material. This porous carbon material has a portion having a continuous multipore structure and a portion having substantially no continuous multipore structure, wherein the portion having a continuous multipore structure has a structural period of 0.002-1 μm.

Description

technical field [0001] The present invention relates to a porous carbon material that can be deployed in various applications, a porous carbon material precursor, a method for producing a porous carbon material precursor, and a method for producing a porous carbon material. Background technique [0002] Porous carbon materials are known, such as granular activated carbon and activated carbon fibers, which have both large macropores and micropores, and carbon nanotubes, mesoporous silica, and mesoporous carbons made of zeolite templates. Fine carbon represented by carbon etc. [0003] Among them, activated carbon is used mainly as an industrial material as an adsorption material and a catalyst carrier, taking advantage of its large specific surface area. In particular, since pores are formed by activating a previously carbonized bulk material, it is also possible to provide a relatively inexpensive porous material as an advantage. However, in a general activation process, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
CPCC01B31/02C01B32/05C01B32/00C01B32/25
Inventor 三原崇晃田中健太郎竹内康作堀口智之
Owner TORAY IND INC