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Photoresponse type metal organic polyhedral catalyst, preparation method and application of photoresponse type metal organic polyhedral catalyst

A metal-organic, light-responsive technology, applied in organic compound/hydride/coordination complex catalysts, organic chemistry, copper-organic compounds, etc., which can solve problems such as catalyst and product separation cost

Pending Publication Date: 2022-07-08
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the difficulty of separating the catalyst and product and the high temperature and pressure reaction conditions cause additional costs

Method used

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  • Photoresponse type metal organic polyhedral catalyst, preparation method and application of photoresponse type metal organic polyhedral catalyst
  • Photoresponse type metal organic polyhedral catalyst, preparation method and application of photoresponse type metal organic polyhedral catalyst
  • Photoresponse type metal organic polyhedral catalyst, preparation method and application of photoresponse type metal organic polyhedral catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh 50 mg of L1 into a 20 mL reaction flask, add 5 mL of a mixed solution of N,N-dimethylformamide and methanol (v / v=4:1), and sonicate for a period of time to obtain an orange clear solution, denoted as bottle A; Weigh 40 mg of copper acetate monohydrate and dissolve it in 5 mL of a mixed solution of N,N-dimethylformamide and methanol (v / v=4:1), and ultrasonically until it is fully dissolved, which is recorded as bottle B. Slowly add the solution of bottle B to bottle A, and ultrasonicate for 5 minutes to make it evenly mixed to obtain a green clear solution. After the reaction, 20 mL of N,N-dimethylformamide / anhydrous methanol solution was sequentially added to the glass bottle for solvent exchange, and each solvent exchange was performed once every 12 h, and each solvent was exchanged three times. Finally, the green powder obtained by vacuum drying at 80 °C for 6 h is a photoresponsive metal-organic polyhedral catalyst.

[0032] Photoresponse test: Disperse the pr...

Embodiment 2

[0035] Weigh 33mg L1 and 6mg 5-aminoisophthalic acid (molar ratio L1:L2=2:1) ​​into a 20mL reaction flask, add 5mL of a mixed solution of N,N-dimethylformamide and methanol (v / v =4:1), ultrasonicate for a period of time to obtain an orange clear solution, denoted as bottle A; weigh 40 mg of copper acetate monohydrate and dissolve it in 5 mL of a mixed solution of N,N-dimethylformamide and methanol (v / v=4 : 1), ultrasonic until it is fully dissolved, recorded as B bottle. Slowly add the solution of bottle B to bottle A, and ultrasonicate for 5 minutes to make it evenly mixed to obtain a green clear solution. After the reaction, 20 mL of N,N-dimethylformamide / anhydrous methanol solution was sequentially added to the glass bottle for solvent exchange, and each solvent exchange was performed once every 12 h, and each solvent was exchanged three times. Finally, the green powder obtained by vacuum drying at °C for 6 h is a photoresponsive metal-organic polyhedron catalyst.

[0036...

Embodiment 3

[0039]Weigh 25mg L1 and 9mg 5-aminoisophthalic acid (molar ratio L1:L2=1:1) into a 20mL reaction flask, add 5mL of a mixed solution of N,N-dimethylformamide and methanol (v / v =4:1), ultrasonicate for a period of time to obtain an orange clear solution, denoted as bottle A; weigh 40 mg of copper acetate monohydrate and dissolve it in 5 mL of a mixed solution of N,N-dimethylformamide and methanol (v / v=4 : 1), ultrasonically until it is fully dissolved, recorded as B bottle. Slowly add the solution of bottle B to bottle A, and ultrasonicate for 5 minutes to make it evenly mixed to obtain a green clear solution. After the reaction, 20 mL of N,N-dimethylformamide / anhydrous methanol solution was sequentially added to the glass bottle for solvent exchange, and each solvent exchange was performed once every 12 h, and each solvent was exchanged three times. Finally, the green powder obtained by vacuum drying at 80 °C for 6 h is a photoresponsive metal-organic polyhedral catalyst.

[...

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Abstract

The invention discloses a light response type metal organic polyhedral catalyst, a preparation method and application thereof. Azo groups on a catalyst ligand can reversibly perform cis-trans configuration transformation under the stimulation of ultraviolet / visible light, so that the intelligent adjustment of catalytic activity under the stimulation of different light sources is realized; the catalyst can efficiently catalyze CO2 cycloaddition reaction under mild conditions. The preparation method of the photoresponse type metal organic polyhedral catalyst comprises the following steps: firstly, preparing an azobenzene organic ligand, namely L1, of which the tail end is functionalized by ionic liquid; and mixing L1 and 5-substituent isophthalic acid, namely L2 in proportion by a mixed ligand strategy method to optimize the pore size and the active center of the catalyst to obtain an ionic liquid functionalized photoresponsive metal organic polyhedron, and performing post-treatment to obtain the photoresponsive metal organic polyhedron catalyst. Wherein the structural formula of L1 is as shown in formula I;

Description

technical field [0001] The present invention relates to a catalyst, a preparation method and application thereof, and more particularly to a light-responsive metal-organic polyhedron catalyst, preparation method and application thereof. Background technique [0002] Since the Industrial Revolution, we are experiencing a series of severe weather and climate events such as heat waves, floods, droughts, forest fires and rising sea levels, and the average global temperature is rising at an unprecedented rate. In the "Special Report on Global Warming of 1.5°C" issued by the United Nations Intergovernmental Panel on Climate Change in 2018, it pointed out that in order to achieve the goal of controlling global warming within 1.5°C, it is necessary to achieve net zero carbon emissions worldwide by the middle of the 21st century. . In order to promote low-carbon energy and green development, in September 2020, the Chinese government announced at the 75th United Nations General Assem...

Claims

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Application Information

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IPC IPC(8): B01J31/22C07F1/08C07D317/36
CPCB01J31/2243B01J31/1691C07F1/005C07D317/36B01J2231/34B01J2531/16B01J35/39Y02P20/584
Inventor 刘国良顾宇阳刘晓勤孙林兵
Owner NANJING UNIV OF TECH
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