Metallic organic frame material based on YbIII pentanuclear molecular structure unit, preparation method and application thereof

A technology of metal-organic frameworks and molecular structures, applied in organic chemistry, chemical instruments and methods, organic compounds/hydrides/coordination complex catalysts, etc., can solve the problems of late start in the research of multi-nuclear rare earth clusters, and achieve good results The effect of size selective catalytic performance, good catalytic performance and simple synthesis method

Inactive Publication Date: 2017-05-31
LIAONING UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the current research focuses on multinuclear transition metal clusters, and the research on multinuclear rare earth clusters started relatively late.

Method used

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  • Metallic organic frame material based on YbIII pentanuclear molecular structure unit, preparation method and application thereof
  • Metallic organic frame material based on YbIII pentanuclear molecular structure unit, preparation method and application thereof
  • Metallic organic frame material based on YbIII pentanuclear molecular structure unit, preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 A kind of based on Yb III Pentanuclear molecular building blocks of metal-organic frameworks

[0027] H 5 DDIA (0.012g, 0.025mmol) and Yb (NO 3 ) 3 ·5H 2 O (0.015g, 0.03mmol) was added into a 5mL heat-resistant screw-top glass bottle, 1.5mL DMF was added, stirred at room temperature to dissolve it, and then 1.5mlH 2 O, stir for 20 minutes until the metal salt is completely dissolved and mixed evenly with the ligand, seal the glass bottle and put it in a 378K oven with a heating rate of 10K min -1 , heated at this temperature for 4 days, at 10K·min -1 The cooling rate is slowly cooled to room temperature, and a colorless block crystal is generated, which is washed with DMF, filtered, and dried to obtain the target product, which is based on Yb III Metal-organic frameworks of pentanuclear molecular building blocks with a yield of 50%.

[0028] Based on Yb synthesized by the present invention III The metal-organic framework material of the pentanuclear...

Embodiment 2

[0030] Embodiment 2 A kind of based on Yb III Metal-Organic Frameworks of Pentanuclear Molecular Building Blocks Catalyzed by the Carbon Dioxide Cycloaddition of Epoxides

[0031] Method: based on Yb prepared in Example 1 III Metal-organic frameworks with pentanuclear molecular building blocks are used as catalysts to catalyze the cycloaddition reaction of carbon dioxide and epoxides.

[0032] Catalyst activation treatment: take a certain amount of Yb-based III The metal-organic framework material of the pentanuclear molecular structure unit was vacuum-dried under the heating condition of 323K for 24 hours.

[0033] 1) The influence of different reaction times

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Abstract

The invention relates to a metallic organic frame material based on a YbIII pentanuclear molecular structure unit, a preparation method and an application thereof. According to the technical scheme, the method comprises the following steps: adding Yb(NO3)3, ligand 5,5'-(4-carboxyl-pyridyl-2,5-bis-substituted)-1,3-phthalic acid, solvent N,N-dimethyl formamide and water into a high-temperature resisting spiral opening glass bottle; stirring for 30 minutes under normal temperature; sealing the container and then putting into an oven; keeping for 4 days under the temperature at 378K; slowly cooling to room temperature, thereby acquiring a colorless transparent block crystal; washing with N,N-dimethyl formamide, filtering and drying, thereby acquiring a target product. The metallic organic frame material based on the YbIII pentanuclear molecular structure unit prepared according to the invention is simple in preparation method and has an excellent size selective catalytic performance for the carbon dioxide cycloaddition reaction of the epoxide.

Description

technical field [0001] What the present invention relates to is a kind of based on Yb III Metal-organic frameworks of pentanuclear molecular building blocks, in particular, relate to the preparation of metal-organic frameworks with cage-like pores exhibiting size-selective catalytic activity for the carbon dioxide cycloaddition reaction of epoxides and their application. Background technique [0002] Metal-organic frameworks (MOFs) are currently a hot research field in coordination chemistry and materials science. The structure of MOFs has superior designability and convenient post-modification, which can easily adjust the pore size and control the types of active functional groups, making MOFs play an important role in the field of catalytic research. Multinuclear metal clusters have become the most concerned frontier field at present. Because they can be developed into nanometer size, they have great application prospects in the synthesis of a series of new functional ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D213/803C07D213/79B01J31/22C07D317/36
CPCC07D213/803B01J31/1815B01J2231/34B01J2531/0205B01J2531/0216B01J2531/38C07D213/79C07D317/36
Inventor 韩正波张月魏娜
Owner LIAONING UNIVERSITY
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