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Microporous coordination polymer material based on cadmium and sodium heteronuclear cluster and preparation method and application thereof

A technology of coordination polymers and sodium impurities, applied in the field of microporous metal-organic coordination polymer materials, can solve the problems of few literature reports and achieve high thermal stability and good application prospects

Inactive Publication Date: 2013-07-10
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there are relatively few literature reports on such materials with selective adsorption properties.

Method used

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  • Microporous coordination polymer material based on cadmium and sodium heteronuclear cluster and preparation method and application thereof
  • Microporous coordination polymer material based on cadmium and sodium heteronuclear cluster and preparation method and application thereof
  • Microporous coordination polymer material based on cadmium and sodium heteronuclear cluster and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1A

[0022] The synthesis of embodiment 1A complex:

[0023] The organic ligand, 4,4'-biphenyldicarboxylic acid (1 mmol, 242 mg), 1H-benzotriazole (3.5 mmol, 416 mg), and sodium hydroxide (0.92 mmol, 37 mg) and cadmium nitrate (0.46 mmol, 142 mg) were dissolved in 10 ml of N,N-dimethylformamide solvent and stirred for several minutes, then sealed in a hot axe. at 150 o After 4 days of incubation at C, it was automatically lowered to room temperature to obtain a bulk single crystal, which was then washed with DMF and dried.

Embodiment 1B

[0024] The synthesis of embodiment 1B complex:

[0025] The organic ligand, 4,4'-biphenyldicarboxylic acid (1 mmol, 242 mg), 1H-benzotriazole (4 mmol, 476 mg), and sodium hydroxide (1.15 mmol, 46 mg) and cadmium nitrate (0.46 mmol, 142 mg) were dissolved in 10 ml of N,N-dimethylformamide solvent and stirred for several minutes, then sealed in a hot axe. at 160 o After 4 days of incubation at C, it was automatically lowered to room temperature to obtain a bulk single crystal, which was then washed with DMF and dried.

[0026] To the characterization of embodiment 1 complex:

[0027] (1) Powder diffraction characterization of phase purity

[0028]Powder diffraction data collection was done on a Rigaku D / Max-2500 diffractometer operating at 40 kV and 100 mA using graphite monochromatized copper target X-rays. Fixed scan with a divergence deviation of 1 o , the width of the receiving slit is 0.3mm. Density data collection using 2 θ / θ scan mode, in 3 o to 60 o The con...

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Abstract

The invention discloses a microporous coordination polymer material based on a cadmium and sodium heteronuclear cluster and a preparation method and application thereof. A heteronuclear cluster coordination polymer is a sextuple interpenetrated diamond three-dimensional network structure complex containing chiral micropores. The polymer is a compound of which the chemical formula is shown as [NH2(CH3)2]2[Cd3Na(BDA)3(BTA)3].2DMF.5H2O, wherein BDA is 4,4'-diphenyl dicarboxylic acid; BTA is 1H-benzotriazol; and DMF is N,N-dimethyl formamide. The compound is prepared with a solvothermal method, and the obtained crystal has high purity. The microporous heteronuclear cluster coordination polymer has an invariant coordination framework after free solvent molecules are removed, shows one-dimensional pore canals of micropores along the a-axis direction, b-axis direction and c-axis direction of the crystal, and has high thermal stability. The complex can adsorb a large amount of hydrogen without adsorbing nitrogen, so that the complex represents a good gas separating effect. The complex can be taken as an adsorption separating agent of certain gases, and has potential application value in the field of material science.

Description

technical field [0001] The invention relates to a microporous metal-organic coordination polymer material, in particular to a cadmium and sodium heteronuclear cluster coordination polymer and its preparation method and application. The cadmium and sodium heteronuclear cluster coordination polymer contains The chiral microporous six-fold interpenetrating diamond three-dimensional network structure complex has the function of selectively adsorbing and separating hydrogen and nitrogen. Background technique [0002] In recent years, the construction of coordination polymer materials with novel microporous pore structures through the coordination of metal ions and organic multifunctional ligands has attracted great interest, not only because of their novel and exquisite topological network structures, but also Mainly because they can exhibit specific properties or functions such as light, electricity, magnetism, catalysis, and adsorption and separation. (Yaghi, O. M.; O'Keeffe, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F19/00B01D53/02
Inventor 卜显和李允伍刘秀明
Owner NANKAI UNIV