CuO electrode preparation method and application of electro-catalytic synthetic alcohol compound

An electrocatalysis and electrode technology, applied in the field of electrochemical organic synthesis, can solve the problems of poor selectivity of Cu-based catalysts and low Faradaic current efficiency, and achieve the effects of excellent chemical catalytic performance, excellent selectivity, and high Faradaic current efficiency

Active Publication Date: 2019-01-29
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing Cu-based catalysts have poor selectivity, and their CO 2 The reduction products are mainly gases, and the Faradaic current efficiency of the liquid products ethanol and propanol is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] a. Preparation of precursor Weigh 0.296 g (1.22 mmol) copper nitrate trihydrate, add 60 mL N,N-dimethylformamide, stir for 5 min, add 0.416 g (1.64 mmol) pyromellitic acid and 0.192 g (0.87 mmol) triethylenediamine hexahydrate, after stirring for 0.5 h, move the mixed solution into a high-pressure hydrothermal reaction kettle, react at a temperature of 120 ° C for 36 h, and naturally cool the reaction solution to room temperature, then wash it with absolute ethanol suction filtration, Then vacuum-dried at 60 °C for 6 h to obtain the precursor after drying.

[0021] b. Preparation of CuO electrode material

[0022] Put 0.5 g of the above-prepared precursor into a crucible, cover it and place it in a muffle furnace, raise the temperature to 350 °C at a heating rate of 5 °C / min, and calcinate at 350 °C for 2 h to obtain CuO electrode materials.

[0023] c. Preparation of modified electrodes

[0024] Weigh 5 mg of the CuO electrode material prepared above, add 60 μL of de...

Embodiment 2

[0026] a. Preparation of precursor Weigh 0.296 g (1.22 mmol) copper nitrate trihydrate, add 60 mL N,N-dimethylformamide, stir for 5 min, add 0.416 g (1.64 mmol) pyromellitic acid and 0.192 g (0.87 mmol) triethylenediamine hexahydrate, after stirring for 0.5 h, the mixed solution was transferred to a high-pressure hydrothermal reactor, and reacted at 120 ° C for 36 h, and the reaction solution was naturally cooled to room temperature and then washed by suction filtration with absolute ethanol. Then vacuum-dried at 60 °C for 6 h to obtain the precursor after drying.

[0027] b. Preparation of CuO electrode material

[0028] Put 0.5 g of the above-prepared precursor into a crucible, cover it and place it in a muffle furnace, raise the temperature to 400 °C at a heating rate of 5 °C / min, and calcinate at 400 °C for 2 h to obtain CuO electrode materials.

[0029] c. Preparation of modified electrodes

[0030] Weigh 5 mg of the CuO electrode material prepared above, add 60 μL of d...

Embodiment 3

[0032] a, the preparation of the precursor is the same as step a of Example 1.

[0033] b. Preparation of CuO electrode material

[0034] Put 0.5 g of the above-prepared precursor into a crucible, cover it and place it in a muffle furnace, raise the temperature to 500 °C at a heating rate of 5 °C / min, and calcinate at 500 °C for 2 h to obtain CuO electrode materials.

[0035] c. Preparation of modified electrodes

[0036] Same as step c of Example 1, a CuO modified electrode was prepared.

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PUM

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Abstract

The invention discloses a CuO electrode preparation method and application of electro-catalytic synthetic alcohol compound. The CuO electrode preparation method is characterized in that Cu(NO3)2 is adopted as a copper source, pyromellitic acid and triethylene diamine are adopted as biligand, a precursor synthesized through a hydrothermal one-step method is subjected to high-temperature calcination, and a CuO electrode material is obtained and serves as a cathode material for conducting electroreduction synthesis on ethyl alcohol and normal propyl alcohol through CO2. According to the CuO electrode preparation method and application of the electro-catalytic synthetic alcohol compound, compared with the prior art, the special shape and the good chemical catalytic performance are achieved, and the excellent selectivity is shown in electro-catalytic CO2 synthetic alcohol; raw materials are easy to get, the environment is not polluted, the cost is low, and the greenhouse effect gas CO2 is effectively utilized; and the electro-catalytic synthetic alcohol compound is an ideal electrochemical catalysis material with application prospects.

Description

technical field [0001] The invention relates to the technical field of electrochemical organic synthesis, in particular to a preparation method of a CuO electrode and an application of electrocatalytic synthesis of alcohol compounds. Background technique [0002] Extensive use of fossil fuels, causing atmospheric CO 2 content increases, aggravating the greenhouse effect, while CO 2 as rich C 1 resource, CO 2 The fixed utilization of CO2 has attracted more and more attention, how to use CO efficiently and greenly 2 become a hot topic. As common chemical raw materials, ethanol and n-propanol are also important alternative energy sources, and the electrochemical reduction of CO 2 Under normal pressure and mild conditions, the CO 2 Converted into energy raw materials, on the one hand, it reduces the greenhouse effect, and on the other hand, it also provides a way to alleviate the energy crisis. Electrocatalytic reduction of CO 2 The preparation of alcohols is of great sig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B3/04C25B11/06C25B11/12C25B9/08C01G3/02C25B3/25C25B9/19
CPCC01G3/02C01P2006/40C25B3/25C25B9/19C25B11/051C25B11/077
Inventor 陆嘉星杨满平智文雅单思立王卓林王欢
Owner EAST CHINA NORMAL UNIV
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