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Metal organic framework material as well as preparation method and application thereof

A metal-organic framework, organic ligand technology, applied in separation methods, alkali metal compounds, chemical instruments and methods, etc., can solve the problems of poor constraint, excessive pore narrowing, excessive interpenetration, etc., to enhance the stability of the framework. Effect

Active Publication Date: 2018-03-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Due to the use of carboxylic acid as a ligand in the prior art metal-organic framework materials, it exhibits poor water resistance and heat resistance stability, and has poor constraints in the process of forming an interpenetrating network structure, which can easily cause excessive interaction. To overcome the problems of excessive pore narrowing and disappearance of active sites, the present invention provides a metal-organic framework material containing complex ligands and a preparation method thereof

Method used

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  • Metal organic framework material as well as preparation method and application thereof
  • Metal organic framework material as well as preparation method and application thereof
  • Metal organic framework material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Weigh 40mgZn(NO 3 ) 2 ·6H 2 O, 20 mg of organic ligand 2',3'-dimethyl-p-terphenyl-4,4''-dicarboxylic acid, 15 mg of auxiliary organic ligand 1,4-bis(p-pyridyl)benzene, then dissolved in 2.84g DMF ( N,N' -dimethylformamide), placed in a stainless steel reaction kettle lined with polytetrafluoroethylene, and the thermal synthesis reaction was carried out at 85 °C for 72 h. Subsequently, the temperature was lowered to room temperature at a rate of 1°C / min, the kettle was opened, and the solution containing the colorless massive crystals was subjected to suction filtration treatment, and then washed with DMF and acetone respectively. After drying at ℃ for 30 h, metal organic framework material A was obtained. Among them, along the crystal a-axis direction of the metal-organic framework material A, the size of the main channel is 14.23 Å ​​× 13.05 Å.

Embodiment 2

[0047] 40mgZn(NO 3 ) 2 ·6H 2 O was replaced by 31mgCu(NO 3 ) 2 ·3H 2 O, the thermal synthesis reaction temperature was increased to 100°C, the thermal synthesis reaction time was shortened to 48h, and other reaction conditions and material compositions were the same as in Example 1, to obtain metal organic framework material B.

Embodiment 3

[0049] 15mg auxiliary organic ligand 1,4-bis(p-pyridyl)benzene was replaced with 9.36mg 4,4'-bipyridine, and the cooling rate was increased to 3°C / min. Other reaction conditions and material compositions were the same as in Example 1, , the metal-organic framework material C was obtained.

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Abstract

The invention discloses a metal organic framework material as well as a preparation method and application thereof. The chemical molecular formula of the metal organic framework material is {[M3(P)3(Q)2].5DMF.2H2O}n, wherein M is one or more metal cations selected from the group consisting of Fe<2+>, Co<2+>, Ni<2+>, Cu<2+>, and Zn<2+>; P is an organic ligand 2',3'-dimethyl-p-terphenyl-4,4''-dicarboxylic acid; Q is one or more auxiliary organic ligands selected from the group consisting of 4,4'-dipyridyl, 2-phenylpyridyl, 4-phenylpyridinium, and 1,4-di(p-pyridyl)benzene; DMF is (i)N, N'( / i)-dimethylformamide. The metal organic framework material provided by the invention has good water resistance and thermal stability resistance; due to the presence of 2', 3'-dimethyl group, the process ofan interpenetrating network is restricted to a certain degree, and the excessive orifices in the metal organic framework material are narrowed.

Description

technical field [0001] The invention relates to a metal organic framework material and a preparation method and application thereof. Background technique [0002] With the development of social economy and human pursuit of comfortable life, the demand and consumption of energy are also increasing year by year, among which fossil fuels such as coal, oil and natural gas are still the main energy sources. The mining, storage, transportation and use of fossil fuels will cause a certain degree of harm to the environment, for example, the combustion of fossil fuels produces a large amount of CO 2 leading to the greenhouse effect, over the past 50 years, atmospheric CO 2 Concentration from 3.1×10 -4 mol / L increased to 3.8×10 -4 mol / L, bringing a great burden to the global ecological balance. Compared with other fossil fuels, the combustion products of natural gas are relatively clean, but natural gas is not a single compound, and often contains a small amount of H 2 S, CO 2 O...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30B01D53/02
CPCB01D53/02B01D2253/204B01D2256/245B01D2257/304B01D2257/504B01J20/226B01J20/28064B01J20/28073B01J20/2808Y02C20/20Y02C20/40
Inventor 赵亮王海洋张英王刚方向晨
Owner CHINA PETROLEUM & CHEM CORP
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