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Dissimilar metal organic framework material of 2,2'-dipyridyl-3,3'-dicarboxylic acid and synthesis method thereof

An organic framework, pyridine carboxylic acid technology, applied in the direction of group 3/13 organic compounds without C-metal bonds, organic chemical methods, compounds containing elements of group 3/13 of the periodic table, etc., to achieve easy control and reproduction. The effect of good performance and simple process

Active Publication Date: 2016-06-15
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] So far, the synthesis of metal-organic framework crystal materials with pyridinecarboxylic acid as the organic ligand and rare earth metal as the node is a difficult work in this field, and it is reported that it is loaded with nano-noble metal particles and applied to the catalytic reduction of 4-NP less

Method used

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  • Dissimilar metal organic framework material of 2,2'-dipyridyl-3,3'-dicarboxylic acid and synthesis method thereof
  • Dissimilar metal organic framework material of 2,2'-dipyridyl-3,3'-dicarboxylic acid and synthesis method thereof
  • Dissimilar metal organic framework material of 2,2'-dipyridyl-3,3'-dicarboxylic acid and synthesis method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] (1) Take 0.05mmol of pyridinecarboxylic acid, 1ml of 0.1M dysprosium nitrate, 3mlDMF, 2mlH 2 O, 1ml of 3.6M nitric acid was added to a stainless steel reaction kettle with a Teflon liner, reacted at a constant temperature of 160°C for 72h, and cooled to room temperature at a constant rate of 2-3°C / h to obtain colorless transparent strip crystals.

[0032] (2) 2.5mgAgNO 3 , 3mlH 2 O was placed in a container, ultrasonicated for 10 min, and then 20 mg of crystals were placed in the container, shaken for 20 h, filtered, rinsed, and collected dry.

[0033] (3) 3ml of 25mg / L p-nitrophenol solution was transferred into a cuvette, and then 1mgAgMOFs catalyst, 3mgKBH 4 , Test its absorption curve with UV.

[0034] figure 1 It is an asymmetric structural unit diagram of the metal organic framework material, which is composed of dysprosium metal, pyridine carboxylic acid ligand, coordination water and free dimethylamine cation. figure 2 It is a two-dimensional layered struc...

Embodiment 2

[0036] (1) Take 0.05mmol of pyridinecarboxylic acid, 1.5ml of 0.2M dysprosium nitrate, 5mlDMF, 4mlH 2 O, 1ml of 3.6M nitric acid was added to a stainless steel reaction kettle with a Teflon liner, reacted at a constant temperature of 160°C for 72h, and cooled to room temperature at a constant rate of 2-3°C / h to obtain colorless transparent strip crystals.

[0037] (2) 2.5mgAgNO 3 , 3mlH 2 O was placed in a container, ultrasonicated for 10 min, and then 20 mg of crystals were placed in the container, shaken for 20 h, filtered, rinsed, and collected dry.

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Abstract

The invention provides a dissimilar metal organic framework material of 2,2'-dipyridyl-3,3'-dicarboxylic acid and a preparation method thereof, belonging to the technical field of crystalline materials. The chemical molecular formula is [Dy(cpa)2(H2O)2].[Me2NH2], wherein Me2NH2 is dimethylamine cation, and cpa represents 5-(4-carboxylphenyl)pyridyl formic acid. Under sealed conditions, an organic ligand pyridine carboxylic acid and dysprosium nitrate are subjected to solvothermal reaction in an N,N-dimethylformamide-water mixed solution by regulating the pH value with nitric acid, thereby obtaining the crystal of the metal organic framework material. The silver-supported metal organic framework material has favorable catalytic properties in p-nitrophenol reduction.

Description

technical field [0001] The invention relates to a heterometallic organic framework material of 2,2'-bipyridine-3,3'dicarboxylic acid, specifically a metal organic framework material formed by using pyridinecarboxylic acid as a ligand and a rare earth metal dysprosium as a metal center, and The compound has excellent performance in catalytic reduction of p-nitrophenol after the noble metal silver is loaded. Background technique [0002] Metal-Organic Frameworks (MOFs for short) is a new type of microporous crystalline material. Metal-organic framework materials use metal ions or metal ion clusters as nodes, organic ligands as bridges, and coordination bonds as forces to connect, forming a long-range ordered crystal space structure. Organic ligands are divided into three categories, namely carboxylic acids, heterocycles and heterocyclic carboxylic acids. Pyridine carboxylic acid ligands are a kind of heterocyclic carboxylic acid ligands, and their advantages lie in the combin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00B01J31/22C07C215/76C07C213/02
CPCB01J31/2243B01J2231/64B01J2531/0241B01J2531/38C07B2200/13C07C213/02C07F5/003C07C215/76
Inventor 李东升王海兵赵君吴亚盘董文文
Owner CHINA THREE GORGES UNIV
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