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Proton conductive MOF (metal-organic framework) structure compound and preparation method thereof

A metal-organic framework, proton conduction technology, applied in the direction of iron-organic compounds, can solve problems such as coarse pores, and achieve the effects of high thermal stability, simple preparation process and equipment

Inactive Publication Date: 2017-05-10
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

However, most suffer from the lack of coarse pores, which ultimately result in only mobile proton carriers rather than efficient conduction of proton ions.

Method used

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  • Proton conductive MOF (metal-organic framework) structure compound and preparation method thereof

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preparation example Construction

[0018] The preparation method of the proton-conductive metal-organic framework compound described above is characterized in that it comprises the following steps:

[0019] (1) Fe 3 (μ 3 -O)(COOCH 3 ) 6 Synthesis: under stirring conditions, sequentially add sodium acetate, ferric nitrate, and ferrous sulfate into distilled water until the color of the solution is brown, then stop stirring, let it stand for 12-24 hours, filter, wash, and wash the filtered The cake was vacuum dried at 80°C to obtain Fe 3 (μ 3 -O)(COOCH 3 ) 6 ;

[0020] (2) the Fe described in step (1) 3 (μ 3 -O)(COOCH 3 ) 6 After mixing well with [1,1'3'1']terphenyl-4,5',4'-tricarboxylic acid and imidazole, dissolve the mixture in N,N'-diethylformamide and add acetic acid , transfer the solution to an airtight reactor and react for 30 hours under autogenous pressure at 150°C. After the reaction, cool naturally at room temperature, filter, wash, and dry to obtain a metal-organic framework compound with...

Embodiment 1

[0025] Under stirring, dissolve 24.6 grams of sodium acetate (0.3 mol) into 100 ml of distilled water to dissolve, then filter the solution under normal pressure to remove insoluble impurities, and slowly add 8.1 grams of iron nitrate (0.02 mol) to the filtrate , after it is completely dissolved, add 27.8 grams of ferrous sulfate (0.1 mol) in batches, and stir for about 1 hour. At this time, the color of the solution is brown. After that, the solution is left to settle for 12 hours, filtered under reduced pressure, and washed with distilled water. Three times, three times with absolute ethanol. Finally, the washed filter cake was vacuum-dried at 80°C to obtain 14 grams of Fe 3 (μ 3 -O)(COOCH 3 ) 6 .

[0026] 0.015 g Fe 3 (μ 3 -O)(COOCH 3 ) 6After mixing well with 0.015 g of [1,1'3'1']terphenyl-4,5',4'-tricarboxylic acid and 0.015 g of imidazole, the mixture was dissolved in 4 mL of N,N'-diethylmethyl amide, and add 0.35 ml of acetic acid, transfer the solution to a cl...

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Abstract

The invention belongs to the technical field of preparation of chemical compounds, and particularly provides a novel MOF (metal-organic framework) structure compound and a preparation method thereof. The structural formula of the compound is [Fe3(mu3-O)(C21O6H11)2(C3N2H4)3], wherein mu3 represents oxygen bridging; C21O6H11 is [1,1'3'1'] terphenyl-4,5',4'-tricarboxylic acid; C3N2H4 is imidazole; a structural unit of the compound belongs to a trigonal system and a R3 space group, a molecular formula of the compound is Fe3C51H31O13N6, molecular weight is 1536.54, lattice parameters are as follows: a=27.696(5) angstrom, b=27.696 angstrom, c=72.829(13) angstrom, alpha=90 degrees, beta=90 degrees and gamma=120 degrees, crystal cell volume is 48382(20) angstrom<3>, and Z=18. Fe3 cluster (Fe3(mu3-O)(COOCH3)6) is prepared from sodium acetate, ferric nitrate and ferrous sulfate, the MOF structure compound is prepared from (Fe3(mu3-O)(COOCH3)6), [1,1'3'1'] terphenyl-4,5',4'-tricarboxylic acid and imidazole and has a three-dimensional microporous structure formed by metal organic coordination, and proton conductivity is high. The preparation technology and equipment are simple, and heat stability of the material is high.

Description

technical field [0001] The invention belongs to the technical field of chemical compound preparation, and specifically relates to a novel metal-organic framework compound and a preparation method thereof. Background technique [0002] In the field of proton-conducting materials, various polyelectrolytes and microporous polymers have emerged. However, most suffer from the deficiency of coarse pores, which eventually lead to only mobile proton carriers rather than efficient conduction of proton ions. Metal-organic frameworks (MOFs) have rich structural properties, high porosity, large specific surface area, uniform pore size and adjustable pore size. In addition, MOFs materials are still very stable even under high temperature conditions. Based on MOFs materials With the above advantages, it has broad application prospects in many aspects such as proton conductive materials and selective adsorption of gases. Currently, how to design and synthesize proton-conducting metal-org...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/02
CPCC07F15/02
Inventor 张凤鸣丁为民白林鹭
Owner HARBIN UNIV OF SCI & TECH
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