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New type fluorine functional ordered mesopore carbon material and its synthesis method

A functionalized, mesoporous carbon technology, applied in the field of materials, can solve problems such as functionalization difficulties, and achieve the effects of low price, wide application prospects, and fast electron transfer rate

Inactive Publication Date: 2007-07-18
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method solves the problem of difficult functionalization on the surface of carbon materials, and obtains fluorine-functionalized mesoporous carbons with uniform pore size, large specific surface area and high order

Method used

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  • New type fluorine functional ordered mesopore carbon material and its synthesis method
  • New type fluorine functional ordered mesopore carbon material and its synthesis method
  • New type fluorine functional ordered mesopore carbon material and its synthesis method

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Preparation of phenolic resin precursor solution. Put 4g of phenol in a three-necked flask, heat it in a water bath at 42°C to make it a transparent liquid; prepare 1g of sodium hydroxide solution with a mass percentage of 20% (weigh 0.17g NaOH, add 0.78g distilled water), slowly drop into in this liquid. After 10 minutes, 7.08 g of formaldehyde solution with a mass percentage of 37% was added, refluxed at 70° C. for 1 hour, cooled to room temperature, and adjusted to neutral pH with 2 mol / L hydrochloric acid. Under reduced pressure distillation at 45°C-50°C, the residue obtained is the target product phenolic resin. The vacuum degree of vacuum distillation is 0.0974MPa. After cooling to room temperature, the ethanol or ether solutions of the phenolic resin prepolymer with a mass percent concentration of 20% and 50% were respectively prepared for use.

Embodiment 2

[0043] Preparation of fluorophenolic resin precursor solution. Put 3.6g of phenol and 0.477g of p-fluorophenol in a three-necked flask, and heat it in a water bath at 42°C to make it a transparent liquid; prepare 0.95g of a 20% sodium hydroxide solution by weight (weigh 0.17gNaOH, add 0.78g distilled water), slowly drop into the liquid. After 10 minutes, 7.08 g of formaldehyde solution with a mass percentage of 37% was added, refluxed at 70° C. for 1 hour, cooled to room temperature, and adjusted to neutral pH with 2 mol / L hydrochloric acid. Under reduced pressure distillation at 45°C-50°C, the residue obtained is the target product fluorine-containing phenolic resin. The vacuum degree of vacuum distillation is 0.0974MPa. After cooling to room temperature, the ethanol solution and the ether solution of the fluorine-containing phenolic resin prepolymer with a mass percent concentration of 20% and 50% were respectively prepared for use.

Embodiment 3

[0045] Preparation of fluorophenolic resin precursor solution. Put 2.0g of phenol and 2.385g of p-fluorophenol in a three-necked flask and heat it in a water bath at 42°C to make it a transparent liquid. Take 0.95g of sodium hydroxide with a mass percentage of 20% and slowly drop it into the liquid. After 10 minutes, 7.08 g of formaldehyde solution with a mass percentage of 37 wt.% was added, refluxed at 70° C. for 1 hour, cooled to room temperature, and adjusted to neutral pH with 2 mol / L hydrochloric acid. Under reduced pressure distillation at 45°C-50°C, the residue obtained is the target product fluorine-containing phenolic resin. The vacuum degree of vacuum distillation is 0.0974MPa. After cooling to room temperature, the ethanol or ether solutions of the fluorine-containing phenolic resin prepolymer with a mass percent concentration of 20% and 50% were respectively prepared for use.

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Abstract

This invention discloses a new fluorine functional order mesoporous carbon and its composition method. Synthesize fluorine functional resol of low molecular weight, of which molecular weight is 200-500. Lead-in surface acting agent self-assembly system, induce self-assembly by solvent volatilizing; carbonize to prepare fluorine functional mesoporous carbon. Prepared fluorine functional mesoporous carbon is of high order, high specific surface (600-1000sq m / g), large bore (0.3-0.7cu cm / g), uniform pore diameter (2.3-5.0nm). In cyclic voltammetry research of three potential system, it indicates that potential difference of oxidoreduction peak-to-peak of cyclic vohammogram modified by this material is small (DeltaE=87mV), electron transfer rate of electrode surface is fast.

Description

technical field [0001] The invention relates to the field of materials, and is a novel fluorine-functionalized ordered mesoporous carbon material and its synthesis, specifically the preparation of fluorine-containing fluorine-functionalized resole phenolic resin, and the synthesis of such fluorine-containing resole phenolic resin Technology of fluorine-functionalized mesoporous carbon materials. Background technique [0002] In recent years, the synthesis of ordered mesoporous carbon materials has attracted widespread attention because of its broad application prospects in high-tech fields such as adsorption, separation, catalyst supports, and electronic devices. For a long time, researchers have been trying to find a simple and feasible method to synthesize ordered mesoporous carbon materials. In 1999, South Korean scientists Ryoo et al. used MCM-48 as a template, sucrose as a carbon source, and carbonized at high temperature under the catalysis of sulfuric acid, and then ...

Claims

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Application Information

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IPC IPC(8): C01B31/02C01B31/08B01J20/20B01J32/00
Inventor 万颖钱旭芳张蝶青冯翠苗李和兴
Owner SHANGHAI NORMAL UNIVERSITY
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