Preparation method and products of novel macroporous carbon material

A macroporous carbon and a new type of technology, applied in the field of preparation of new macroporous carbon materials, can solve the problems of rough pore walls of macroporous carbon materials, high equipment requirements, complex preparation processes, etc., and achieve low operating difficulty and reaction conditions. , The effect of low equipment requirements and simple preparation process

Active Publication Date: 2015-03-25
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most macroporous carbon materials are synthesized by hard and soft template methods, physical activation methods, and chemical activation methods. However, physical activation methods basically require high temperatures above 800 ° C, and the prepared macroporous carbon materials have relatively rough pore walls. Irregular and not strong; chemical activation methods basically require high temperatures above 800°C, and the pore walls of the prepared macroporous carbon materials are relatively rough, irregular and not strong, and the preparation process is complicated, requiring equipment It is also extremely high, and the chemical reagents such as KCNS required in the preparation process also pollute the environment very seriously, so it is urgent to improve

Method used

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  • Preparation method and products of novel macroporous carbon material
  • Preparation method and products of novel macroporous carbon material
  • Preparation method and products of novel macroporous carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1 of the present invention: a kind of bulk macroporous carbon material, such as figure 1 As shown, it is prepared by the following method: using macroporous phenolic resin as carbon source, FeCl 3 It is a catalyst; it can be obtained by carbonizing and heating the phenolic resin; it specifically includes the following steps:

[0045] S11. Take the phenolic resin and perform foaming treatment to obtain a macroporous phenolic foam board with a pore size of 10-100 μm;

[0046] S21. Cut the macroporous phenolic foam board to about 0.05-0.1m3, and carbonize the macroporous phenolic foam board at 200-250°C to obtain a carbonized phenolic foam board;

[0047] S31. Take FeCl 3 About 20-30g of coarse powder is finely ground, among which FeCl 3 The mass ratio of coarse powder to carbonized phenolic foam board is 2:1; the carbonized phenolic foam board is placed in a container, and the finely ground FeCl 3 Cover the powder on the carbonized phenolic foam board to ob...

Embodiment 2

[0050] Example 2: A block macroporous carbon material prepared by the following method: using macroporous phenolic resin as the carbon source, FeCl 3It is a catalyst; it can be obtained by carbonizing and heating the phenolic resin; it specifically includes the following steps:

[0051] S11. Take the phenolic resin and perform foaming treatment to obtain a macroporous phenolic foam board with a pore size of 10-100 μm;

[0052] S21. Carbonizing the macroporous phenolic foam board at 200-250° C. to obtain a carbonized phenolic foam board;

[0053] S31. Take FeCl 3 powder, covered on the carbonized phenolic foam board, to obtain product A; wherein, FeCl 3 The mass ratio of powder to carbonized phenolic foam board is 2:1;

[0054] S41 Heat product A to 160°C under vacuum, and keep the temperature constant for 2-3 hours to obtain product B;

[0055] S51. Take out product B, heat it up to 300°C under normal pressure, and keep the temperature constant for 1-2 days to obtain a bul...

Embodiment 3

[0056] Example 3: A block macroporous carbon material prepared by the following method: using macroporous phenolic resin as the carbon source, FeCl 3 It is a catalyst; it can be obtained by carbonizing and heating the phenolic resin; it specifically includes the following steps:

[0057] S11. Get the phenolic resin, carry out foaming treatment, get macroporous phenolic foam board;

[0058] S21. Carbonizing the macroporous phenolic foam board at 200-250° C. to obtain a carbonized phenolic foam board;

[0059] S31. Take FeCl 3 About 20-30g of coarse powder is finely ground and covered on the carbonized phenolic foam board to obtain product A; wherein, FeCl 3 The mass ratio of coarse powder to carbonized phenolic foam board is 5:2;

[0060] S41 Heat product A under vacuum to 140-160°C and keep the temperature constant for 2-3 hours to obtain product B;

[0061] S51. Take out product B, after cooling, heat it up to 240°C under normal pressure, and keep the temperature constant...

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Abstract

The invention discloses a preparation method and products of a novel macroporous carbon material. According to the preparation method comprises the following steps of carbonizing and heating macroporous phenolic resin serving as a carbon source and FeCl3 serving as a catalyst to obtain the novel macroporous carbon material. By adopting the macroporous phenolic resin serving as the carbon source and FeCl3 serving as the catalyst, slow oxidation, catalysis and carbonization are simultaneously performed; by the structure-directing effect of the macroporous phenolic resin and the kirkendall diffusion effect of Fe element in FeCl3, the Fe element enters the phenolic resin plate to modify carbon pores, and the regular and hard macroporous carbon material having more smooth pore walls is finally prepared; and meanwhile, the distribution of pores in the prepared macroporous carbon material is more uniform.

Description

technical field [0001] The invention relates to a preparation method of a novel macroporous carbon material and a product thereof, belonging to the technical field of new material preparation. Background technique [0002] Macroporous materials have always been a research hotspot in the field of materials. Among many macroporous materials, macroporous carbon materials are more and more used in modern scientific research. The pore diameter of the macroporous carbon material is greater than 50nm, and its surface is hydrophobic, weakly acidic and alkaline, high in chemical inertness, and has good thermal and mechanical stability. In addition, its large pore diameter and high specific surface area can accelerate material transport and serve as The reactants provide more surface-active adsorption sites, and thus have received extensive attention in the adsorption of harmful substances, catalytic supports, and electrochemistry. Based on the ever-expanding demand for applications,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
Inventor 王海旺姜芸青蒋少斌徐新超韩宏泳李颖张雅茹韩双吉陈步航
Owner NORTHEASTERN UNIV
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