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Metal organic framework material with novel structure, metal nitrogen carbon catalyst derived from metal organic framework material, and preparation method and application of metal nitrogen carbon catalyst

A technology of metal-organic frameworks and carbon catalysts, which is applied to structural parts, electrical components, battery electrodes, etc., can solve the problems of Co-Co bond length, uneven distribution, and easy agglomeration, and achieves simple synthesis methods, low cost, and high efficiency. The effect of oxygen reduction activity

Pending Publication Date: 2021-10-22
INTELLIGENT MFG INST OF HFUT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is a challenge to obtain high-density and uniformly distributed metal particles in metal nitrogen carbon materials. For example, ZIF-67, a commonly used MOF precursor, has been calcined by a large number of researchers to obtain cobalt nitrogen carbon catalysts, but because ZIF-67 The Co-Co bond length is short, and it is easy to agglomerate during the calcination process, and the metal nitrogen carbon material with large particles and uneven distribution is often obtained.

Method used

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  • Metal organic framework material with novel structure, metal nitrogen carbon catalyst derived from metal organic framework material, and preparation method and application of metal nitrogen carbon catalyst
  • Metal organic framework material with novel structure, metal nitrogen carbon catalyst derived from metal organic framework material, and preparation method and application of metal nitrogen carbon catalyst
  • Metal organic framework material with novel structure, metal nitrogen carbon catalyst derived from metal organic framework material, and preparation method and application of metal nitrogen carbon catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Mix 0.60g nitrilotriacetic acid (NTA) with 0.77g nickel chloride (NiCl 2 ) into a reaction kettle, add 30mL of water and 10mL of isopropanol, seal it well, put it in an oven, then raise the temperature to 180°C and react for 6 hours, then centrifuge the obtained product, wash it with water and centrifuge, and dry it in vacuum at 60°C. Obtain Ni-NTA metal organic framework material.

[0030] The crystal structure of the Ni-NTA novel metal-organic framework material prepared in this example is as follows: figure 1 As shown, its detailed crystallographic parameters are as follows:

[0031]

[0032] The Ni-NTA metal organic framework material obtained in this example has a linear morphology.

[0033] The X-ray powder diffraction curve and theoretical simulation curve of the Ni-NTA metal organic framework material obtained in this example are as follows figure 2 As shown, it shows that the XRD diffraction data of Ni-NTA obtained in this embodiment and the XRD diffract...

Embodiment 2

[0035] In this example, the Ni-NTA metal-organic framework material was prepared according to the same method as in Example 1, except that the inorganic metal salt nickel chloride in Example 1 was replaced with nickel nitrate. The complex obtained in this example is still a Ni-NTA metal-organic framework material, and its crystal structure is also the same as in Example 1.

Embodiment 3

[0037] In this example, the Ni-NTA metal-organic framework material was prepared according to the same method as in Example 1, except that the inorganic metal salt nickel chloride in Example 1 was replaced with nickel sulfate. The complex obtained in this example is still a Ni-NTA metal-organic framework material, and its crystal structure is also the same as in Example 1.

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Abstract

The invention discloses a metal organic framework material with a novel structure, a metal nitrogen carbon catalyst derived from the metal organic framework material and a preparation method and application of the metal nitrogen carbon catalyst. The chemical formula of the metal organic framework material is M(C6H7NO6)(H2O), and M is Ni, Co or NiCo. The synthesized metal organic framework material has a novel crystal structure, and the derivative metal nitrogen carbon material of the metal organic framework material has high-density and uniformly-distributed metal particles and rich metal sites, so that the metal organic framework material has rich catalytic activity centers; the derivative metal nitrogen-carbon material provided by the invention can be used as a cathode oxygen reduction catalyst of a metal-air battery or a fuel cell, has excellent catalytic performance, has extremely high oxygen reduction activity compared with other existing non-noble metal materials, and has performance close to that of a commercial platinum-carbon catalyst. The material is a potential substitute for noble metal oxygen reduction catalysts.

Description

technical field [0001] The invention relates to the technical field of metal organic framework materials, in particular to a metal organic framework material with a new structure, a metal nitrogen carbon catalyst derived therefrom, and a preparation method and application thereof. Background technique [0002] Metal-organic framework (MOF) material is a coordination polymer that has developed rapidly in the past two decades. It has a three-dimensional pore structure. Generally, metal ions are used as link points and organic ligands are supported to form a new type of porous material that extends in space in three dimensions. Both themselves and metal-organic framework-derived carbon composites have broad applications in catalysis, energy storage, and separations. Therefore, the development of MOF materials with novel crystal structures is of great significance for enriching MOF families and developing new materials derived from them. [0003] In recent years, the cathode ox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90H01M4/88
CPCH01M4/9008H01M4/9083H01M4/88Y02E60/50
Inventor 罗浩田梦
Owner INTELLIGENT MFG INST OF HFUT
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