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Preparation method of nitrogen or metal doped carbon material

A metal doping, carbon material technology, applied in the preparation/purification of carbon, non-metallic elements, chemical instruments and methods, etc., can solve the problems of poor catalyst structure stability, low specific surface area, high preparation cost, and achieve good catalytic activity. , high activity, good stability

Active Publication Date: 2017-07-04
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as the use of porous carbon materials or organometallic gels, by doping cobalt ethylenediamine [CN100461511C], pyrrole and ferric chloride, p-toluenesulfonic acid [CN102614915A], 2-(2-pyridine)-benzo Imidazole is prepared as a nitrogen source [CN104138759A], but this kind of catalyst has poor structural stability, low specific surface area, and high price
For example, 2'2-bipyridine is used as a nitrogen source, mixed with carbon nanotubes ultrasonically, and metal salts are added to obtain a catalyst through heat treatment, but the preparation cost is high [CN102698755A]

Method used

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  • Preparation method of nitrogen or metal doped carbon material
  • Preparation method of nitrogen or metal doped carbon material

Examples

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Effect test

Embodiment 1

[0036] A method for preparing a metal-nitrogen-doped carbon material, the operation steps are as follows:

[0037] (1) Take 50ml of absolute ethanol solution and place it in a two-necked flask equipped with a condenser return tube, add 1mol of 2,6-diacetylpyridine, stir at room temperature for 10 minutes, then add 1mol of p-phenylenediamine, and stir at room temperature for 10 minutes , under the protection of nitrogen, after heating from room temperature to 100 °C, add 0.1 g of oxalic acid, and continue to stir for 24 hours. During the reaction, the acyl group and the amino group undergo dehydration condensation to form a multi-dentate iminopyridine ligand with metal ion complexing ability. Polymer, naturally cooled to room temperature;

[0038] (2) Take 0.5 mol of anhydrous ferrous chloride and dissolve it in 10ml of absolute ethanol. After the ferrous chloride is completely dissolved, add the 10ml of anhydrous ferrous chloride dissolved in anhydrous ethanol solution to the ...

Embodiment 2

[0043] A method for preparing a metal-nitrogen-doped carbon material, the operation steps are as follows:

[0044] (1) Take 50ml of n-butanol solution and place it in a two-necked flask equipped with a condenser return tube, add 1mol of 2,6-diacetylpyridine, stir at room temperature for 20 minutes, then add 1mol of melamine, stir at room temperature for 20 minutes, and Under the protection of air and gas, after heating from room temperature to 110 °C, add 0.1 g of oxalic acid, and continue to stir for 24 hours. During the reaction, the acyl group and the amino group undergo dehydration condensation to form a multi-dentate iminopyridine ligand polymerization with metal ion coordination ability. objects, naturally cooled to room temperature;

[0045] (2) Get 1mol of cobaltous chloride hexahydrate, be dissolved in 10ml n-butanol, until cobalt chloride is completely dissolved, one-time will be dissolved with the 10ml n-butanol solution that cobalt chloride is dissolved in the step...

Embodiment 3

[0050] A method for preparing a metal-nitrogen-doped carbon material, the operation steps are as follows:

[0051] (1) Take 50ml of absolute ethanol solution and place it in a two-necked flask equipped with a condensing return tube, add 1mol of 2,6-diacetylpyridine, stir at room temperature for 10 minutes, and then add 2,4-diamino-6-methanol 1 mol of 1,3,5-triazine, stirred at room temperature for 10 minutes, heated from room temperature to 50°C under nitrogen protection, added 0.1 g of oxalic acid, and continued to stir for 24 hours. During the reaction, the acyl group and the amino group were dehydrated and condensed , forming a multi-dentate iminopyridine ligand polymer with metal ion complexing ability, and naturally cooling to room temperature;

[0052] (2) get anhydrous nickel chloride 0.5mol g, be dissolved in 10ml dehydrated alcohol, treat that nickel chloride dissolves completely completely, disposable will be dissolved with the 10ml dehydrated alcohol solution of anh...

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Abstract

The invention discloses a preparation method of a nitrogen or metal doped carbon material. The preparation method comprises following steps: 1, 2,6-diacetylpyridine and two or more than two amino monomers are reacted in a solvent in the presence of a catalyst under protection of an insert gas so as to obtain an imido pyridine ligand polymer; 2, the imido pyridine ligand polymer is subjected to thermal cracking under protection of the insert gas so as to obtain a nitrogen-doped carbon material, and post-treatment is carried out so as to obtain a finished product. The weight of nitrogen accounts for 0.5 to 10% of that of the nitrogen or metal doped carbon material; product yield after polymer thermal cracking ranges from 29 to 57%; product BET is about 300m<2> / g to 1500m<2> / g; the capacitance of the nitrogen or metal doped carbon material is high when the nitrogen or metal doped carbon material is used for preparing super-capacitors, and the Lithium storage performance and the cycling stability of the nitrogen or metal doped carbon material are excellent when the nitrogen or metal doped carbon material is taken as a lithium battery electrode material.

Description

technical field [0001] The invention belongs to the technical field of electrochemical energy materials, and in particular relates to a preparation method of nitrogen or metal-doped carbon materials. Background technique [0002] Carbon is one of the most widely sourced elements in nature, and there are many types of allotropes, with structures ranging from one-dimensional to three-dimensional. Carbon is an ideal matrix material, which is widely used in energy materials, medical materials, and catalytic materials due to its advantages of low cost, good electrical conductivity, large specific surface area, good structure and stability. For nitrogen-doped materials, nitrogen atoms have one more valence electron than carbon atoms. The incorporation of nitrogen atoms changes the electronic structure and energy band gap of surrounding carbon atoms, changes the conductive form of carbon materials, and makes free carriers The number increases; after nitrogen doping into the six-me...

Claims

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Application Information

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IPC IPC(8): C01B32/05C01B32/205C01B32/914
CPCC01P2002/52C01P2002/72C01P2004/04C01P2006/17C01P2006/40
Inventor 田植群刘宗沈培康张潇然吕丹丹梁立喆尹诗斌
Owner GUANGXI UNIV
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