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Graphitized stephanoporate material with carbon element and method of producing the same

A technology of graphitization and porous carbon, applied in the field of preparation of graphitized porous carbon materials, which can solve the problems of pore structure damage, many synthesis steps, and low degree of graphitization

Active Publication Date: 2009-07-29
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The synthesis process of hard template method and soft template method is often more complicated, and the synthesis cost is higher
Moreover, in general, the synthesized porous carbons are mainly amorphous structures with a low degree of graphitization
In order to obtain porous carbon with a relatively high degree of graphitization, it needs to be treated at a higher temperature (> 2000 ° C), but it will cause serious damage to the pore structure
In addition, porous carbon with a high degree of graphitization can be synthesized by chemical vapor deposition, but the commonly used carbon source compound acetonitrile has strong toxicity
Based on the synthesis of amorphous porous carbon by the template method, it can be transformed into a graphitized structure at a lower temperature and maintain a certain pore structure by impregnating the catalyst, but there are many synthesis steps

Method used

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  • Graphitized stephanoporate material with carbon element and method of producing the same
  • Graphitized stephanoporate material with carbon element and method of producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 2.3 grams of resorcinol are dissolved in 45 grams of water and cobalt oxide colloid solution containing 0.04 mole of cobalt element (the hydrated cobalt oxide colloidal sol particles are obtained by the reaction of acetic acid and cobalt hydroxide), adding 5 grams of concentration is 37% formaldehyde, After stirring evenly, react at 50°C for 0.5 hours, filter the solid product, dry at 100°C, carbonize at 900°C in nitrogen for 2 hours, soak the product in 20% hydrochloric acid for 24 hours, filter, and dry to obtain graphitized porous carbon. The comparison area is about 250m 2 / g, magnetic. The X-ray diffraction pattern of the material is as figure 1 shown.

Embodiment 2

[0018] Dissolve 2 grams of phenol in 35 grams of water containing 0.04 moles of iron and iron oxide colloidal solution (the hydrated iron oxide sol particles are obtained by the reaction of acetic acid and ferric hydroxide), add 5 grams of formaldehyde with a concentration of 37%, and stir well , react at 80°C for 4 hours, filter the solid product, dry at 100°C, carbonize at 800°C in nitrogen for 2 hours, soak the product in 10% hydrochloric acid for 2 hours, filter, and dry to obtain graphitized porous carbon with a comparative area of ​​about 470m 2 / g, with magnetic properties, the Raman spectrum of the material is shown as figure 2 shown.

Embodiment 3

[0020] 2.4 grams of phloroglucinol are dissolved in 35 grams of water and iron oxide colloid solution containing 0.02 mole of iron (the hydrated iron oxide sol particles are obtained by adding sodium hydroxide to partially hydrolyze ferric nitrate), adding 4.2 grams of 37% Formaldehyde, stir well, react at 50°C for 1 hour, filter the solid product, dry at 100°C, carbonize at 900°C in nitrogen for 2 hours, soak the product in 10% hydrochloric acid for 2 hours, filter, and dry to obtain graphitized porous Carbon, comparative area about 330m 2 / g, magnetic.

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Abstract

The invention relates to a method for preparing graphitized porous carbon materials, which comprises that: hydrous metal oxide nano-particles dispersed in an aqueous solution are taken as templates to form metal oxide-organic polymer composite structures through condensation polymerization of a phenolic aldehyde precursor around a template phase; and in the subsequent high-temperature carbonization process, the composition structures form graphitized structures under the catalysis action of metal, and the graphitized porous carbon materials are obtained after the metal is dissolved by acid, wherein partial materials have magnetism. The materials can be applied in the fields of battery, adsorption, catalysis, water pollution removal, and the like.

Description

technical field [0001] The invention belongs to the technical field of carbon material preparation, in particular to a preparation method of graphitized porous carbon material. Background technique [0002] The chemical stability, electrical conductivity and thermal conductivity of graphite materials are relatively good, but natural graphite materials do not have a porous structure, and the specific surface area usually does not exceed 20m 2 / g, which limits its application in some fields. The synthesis of porous carbon by template method is one of the research hotspots in recent years, which is usually divided into hard template method and soft template method. Hard templates usually refer to some inorganic porous materials, such as silica colloidal crystals, molecular sieves, clays, etc., and the templates exist in solid state during the synthesis process. Soft templates refer to the formation of supramolecular structures of organic surfactants or polymers in water or or...

Claims

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Application Information

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IPC IPC(8): C01B31/02
Inventor 李进军郝郑平梁燕胡琴何炽豆宝娟程杰李兰冬
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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