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Copper atom cluster preparation method and catalytic co 2 Reaction use

A technology of catalytic reaction and copper atom, applied in catalytic reaction, carboxylate preparation, chemical instruments and methods, etc.

Active Publication Date: 2021-12-17
NANJING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Summarizing the results of the literature on the preparation of supported copper cluster catalyst materials for many years, it can be found that there is no method to prepare a supported copper cluster catalyst material with a controllable number of copper atoms and a controllable content, and its catalytic performance. Application in the reaction of converting CO2 to basic chemicals

Method used

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  • Copper atom cluster preparation method and catalytic co <sub>2</sub> Reaction use
  • Copper atom cluster preparation method and catalytic co <sub>2</sub> Reaction use
  • Copper atom cluster preparation method and catalytic co <sub>2</sub> Reaction use

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Experimental program
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Embodiment 1

[0028] Under constant stirring, 11.9 mg of copper acetylacetonate (Cu(C 5 h 7 o 2 ) 2 ) was added 7.2mL acetonitrile in the flask and mixed for 10min. Then 7.12 mg of 2-mercaptobenzoxazole (C 7 h 5 NOS) was added to the above solution, and the reaction was stirred for 15 minutes. At the same time, 10.8 mg NaBH 4 Dissolve in acetonitrile. Subsequently, the above two solutions were mixed in a flask, and left to stand with stirring at 25° C. for 3 hours. The acetonitrile solvent was removed by rotary evaporation and the resulting solid was washed with diethyl ether to remove unreacted thiol and possible disulfide by-products. The product was then extracted with dichloromethane to give [Cu 6 (C 7 h 4 NOS) 6 ] 2- (abbreviated as Cu 6 ). Tested by ultraviolet-visible spectroscopy (UV-Vis), the obtained copper atomic clusters are Cu 6 ,See figure 1 . Take 15 mg Cu 6 Add 500 mg ZrO 2 , placed in an ultrasonic instrument for 15 minutes, stirred overnight to make it ...

Embodiment 2

[0031] Under constant stirring, 8.52 mg of copper nitrate (Cu(NO 3 ) 2 ) was added 7.2mL acetonitrile in the flask and mixed for 10min. Then 7.12 mg of 2-mercaptobenzoxazole (C 7 h 5 NOS) was added to the above solution, and the reaction was stirred for 15 minutes. At the same time, 10.8 mg NaBH 4 Dissolve in acetonitrile. Subsequently, the above two solutions were mixed in a flask, and left to stand with stirring at 25° C. for 3 hours. The acetonitrile solvent was removed by rotary evaporation and the resulting solid was washed with diethyl ether to remove unreacted thiol and possible disulfide by-products. The product was then extracted with dichloromethane to give [Cu 6 (C 7 h 4 NOS) 6 ] 2- (abbreviated as Cu 6 ). Tested by ultraviolet-visible spectroscopy (UV-Vis), the obtained copper atomic clusters are Cu 6 ,See figure 1 . Take 15 mg Cu 6 Add 500 mg ZrO 2 , placed in an ultrasonic instrument for 15 minutes, stirred overnight to make it aged, and after d...

Embodiment 3

[0034] Under constant stirring, 11.9 mg of copper acetylacetonate (Cu(C 5 h 7 o 2 ) 2 ) was added 7.2mL acetonitrile in the flask and mixed for 10min. Then 7.12 mg of 2-mercaptobenzoxazole (C 7 h 5 NOS) was added to the above solution, and the reaction was stirred for 15 minutes. At the same time, 10.8 mg NaBH 4 Dissolve in acetonitrile. Subsequently, the above two solutions were mixed in a flask, and left to stand with stirring at 25° C. for 3 hours. The acetonitrile solvent was removed by rotary evaporation and the resulting solid was washed with diethyl ether to remove unreacted thiol and possible disulfide by-products. The product was then extracted with dichloromethane to give [Cu 6 (C 7 h 4 NOS) 6 ] 2- (abbreviated as Cu 6 ). Tested by ultraviolet-visible spectroscopy (UV-Vis), the obtained copper atomic clusters are Cu 6 ,See figure 1 . Take 15 mg Cu 6 Add 500 mg of MgO, place it in an ultrasonic instrument for 15 minutes, stir overnight to make it a...

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Abstract

A catalytic conversion of CO 2 A supported copper cluster catalyst for the production of basic chemicals, the number of gold atoms in the copper cluster is 24, the mass content is: X wt% to XX wt%, and the carrier is a transition metal oxide. The beneficial effects of the present invention are: using common copper salts and organic amines as reactants, and metal oxide carriers, through chemical coordination and reduction, and ultrasonic loading methods, the above-mentioned supported copper cluster catalyst material is prepared, and the copper content It can be adjusted within a certain range, and different supports can have different catalytic properties. For example, the supported copper atom cluster catalyst material can 2 It exhibits excellent catalytic performance in the preparation of basic chemicals. The material has many advantages and can be mass-produced industrially. The inventive method has less copper content in the catalyst, high efficiency, low cost and little environmental pollution. The invention discloses its preparation method.

Description

Technical field: [0001] The invention relates to a supported copper atom cluster catalyst material and its preparation method and its application in catalytic conversion of CO2 to prepare basic chemicals. Background technique: [0002] Due to the extensive use of fossil fuels, the concentration of carbon dioxide in the atmosphere is increasing year by year. Relevant studies have shown that since the industrial revolution, the concentration of carbon dioxide in the atmosphere has 2 Concentrations have risen from 280ppm to 355ppm. CO 2 One of the main gases responsible for the greenhouse effect, CO 2 Excessive emissions into the atmosphere have had a serious impact on the global environment. H from renewable energy sources 2 with CO 2 The reaction generates basic chemicals, so that CO2 can be used as a resource, which can not only alleviate the greenhouse effect, but also reduce the dependence on petroleum resources in the production of chemical industry. Due to CO 2 Mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/38B01J31/28B01J31/22C07C31/04C07C29/154C07C69/06C07C67/00
CPCB01J31/38B01J31/28B01J31/226C07C29/154C07C67/00B01J2531/16B01J2531/0222B01J2231/625C07C31/04C07C69/06Y02P20/52
Inventor 祝艳蔡潇陈名扬丁维平
Owner NANJING UNIV