A kind of metal organic framework material and its preparation method and application

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 binding, disappearance of active sites, poor water resistance and thermal stability, etc. The effect of enhancing the stability of the skeleton

Active Publication Date: 2020-03-17
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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  • A kind of metal organic framework material and its preparation method and application
  • A kind of metal organic framework material and its preparation method and application
  • A kind of metal organic framework material and its preparation method and application

Examples

Experimental program
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Embodiment 1

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

Embodiment 2

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

Embodiment 3

[0049] Replace 15 mg of auxiliary organic ligand 1,4-bis(p-pyridyl)benzene with 9.36 mg of 4,4'-bipyridine, increase the cooling rate to 3°C / min, and other reaction conditions and material composition are the same as in Example 1. , to obtain the metal-organic framework material C.

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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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Patent Type & Authority Patents(China)
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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