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Pentanuclear-ytterbium-cluster-molecule-structure-unit-conitaning metal organic framework, and preparation method and application thereof

A metal-organic framework and molecular structure technology, applied in organic chemistry methods, organic chemistry, chemical instruments and methods, etc., can solve the problems of late start in the research of multi-nuclear rare earth clusters, and achieve good catalytic performance and simple synthesis methods.

Active Publication Date: 2016-07-06
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Pentanuclear-ytterbium-cluster-molecule-structure-unit-conitaning metal organic framework, and preparation method and application thereof
  • Pentanuclear-ytterbium-cluster-molecule-structure-unit-conitaning metal organic framework, and preparation method and application thereof
  • Pentanuclear-ytterbium-cluster-molecule-structure-unit-conitaning metal organic framework, and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 Contains the metal-organic framework of pentanuclear ytterbium cluster molecular structural unit

[0033] H 4 PDDI (0.01g, 0.025mmol) and Yb (NO 3 ) 3 ·5H 2 O (0.015g, 0.03mmol) was added to a high-temperature-resistant screw-top glass bottle with a volume of 5mL, 1.5mL of DMF was added, stirred with a magnetic stirrer to dissolve it, and then 1.5ml of H 2 O, stir for 15 minutes until the metal salt is completely dissolved and mixed with the ligand evenly, seal the glass bottle and put it in an oven at 105°C, heat it at this temperature for 4 days, at 5°C·h -1 The cooling rate was slowly cooled to room temperature, and colorless blocky crystals were formed. They were washed with N,N-dimethylformamide, filtered, and dried to obtain the target product, which was a metal-organic framework containing pentanuclear ytterbium cluster molecular structural units. The yield was 50%.

[0034] The metal-organic complex compound synthesized by the present invention...

Embodiment 2

[0037] Example 2 Catalytic function of metal-organic frameworks containing pentanuclear ytterbium cluster molecular structural units to carbon dioxide cycloaddition reaction of epoxides

[0038] The metal organic framework containing the pentanuclear ytterbium cluster molecular structural unit prepared in Example 1 was used as a catalyst to catalyze the cycloaddition reaction of carbon dioxide and epoxide.

[0039] Catalyst activation treatment: take a certain amount of metal-organic frameworks containing molecular structural units of pentanuclear ytterbium clusters, and dry them under vacuum at 50°C for 24 hours.

[0040] 1) The influence of different reaction times

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Abstract

The invention relates to a pentanuclear-ytterbium-cluster-molecule-structure-unit-conitaning metal organic framework, and a preparation method and application thereof. The technical scheme is as follows: adding Yb(NO3)3, a 5,5'-(pyridyl-2,5-disubstituted)-1,3-phthalic acid, a solvent N,N-dimethylformamide and water into a high-temperature-resistant screw glass bottle, and stirring at normal temperature; sealing the container, putting into a drying oven, and heating at 105 DEG C for 4 days; slowly cooling to room temperature to obtain colorless transparent massive crystals; and washing with N,N-dimethylformamide, filtering, and drying to obtain the target product. The pentanuclear-ytterbium-cluster-molecule-structure-unit-conitaning metal organic framework has favorable size selectivity and catalytic property for carbon dioxide cycloaddition reaction of epoxides.

Description

technical field [0001] The present invention relates to a metal organic framework containing pentanuclear ytterbium cluster molecular structural units and its preparation method and application, in particular to a cage with size selective catalytic activity for carbon dioxide cycloaddition reaction of epoxides Fabrication and application of metal-organic framework materials with cavity-type pores. Background technique [0002] In recent years, functional metal-organic framework materials have received considerable attention as a rapidly developing field, not least because of their great potential for practical applications. Multinuclear metal clusters have become one of the hotspots in the research of functional materials today, not only because of their nanoscale molecular structure, but also exhibit interesting optical, electrical, magnetic, and catalytic properties. However, most of the current research focuses on multinuclear transition metal clusters, and the research ...

Claims

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Application Information

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IPC IPC(8): C07D213/55B01J31/22C07D317/36
CPCB01J31/1691B01J31/2213B01J2231/34B01J2531/0211B01J2531/38C07B2200/13C07D213/55C07D317/36
Inventor 韩正波魏娜
Owner LIAONING UNIVERSITY
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