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Preparation method of nitrogen-doped graphene loaded core-shell-shaped copper-carbon composite catalyst for producing formic acid through electro-catalysis of carbon dioxide

A nitrogen-doped graphene and carbon dioxide technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as low stability and poor product selectivity , to achieve good stability, increase the adsorption capacity, and improve the activity

Active Publication Date: 2020-09-15
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problems of poor product selectivity and low stability in existing porous carbon-supported metal catalysts, and provides a nitrogen-doped graphene-supported core-shell copper-carbon composite catalyst for electrocatalytic production of formic acid from carbon dioxide. Preparation

Method used

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  • Preparation method of nitrogen-doped graphene loaded core-shell-shaped copper-carbon composite catalyst for producing formic acid through electro-catalysis of carbon dioxide
  • Preparation method of nitrogen-doped graphene loaded core-shell-shaped copper-carbon composite catalyst for producing formic acid through electro-catalysis of carbon dioxide
  • Preparation method of nitrogen-doped graphene loaded core-shell-shaped copper-carbon composite catalyst for producing formic acid through electro-catalysis of carbon dioxide

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specific Embodiment approach 1

[0030] Embodiment 1: This embodiment is a method for preparing a nitrogen-doped graphene-loaded core-shell copper-carbon composite catalyst for carbon dioxide electrocatalytic production of formic acid, which is carried out according to the following steps:

[0031] 1. Configure the precursor solution:

[0032] Nitrogen-doped reduced graphene oxide was added to the mixed solution of N,N-dimethylformamide and ethanol to fully disperse, and then Cu(NO 3 ) 2 ·3H 2O continue to stir until completely dissolved to obtain a mixed solution; dissolve benzimidazole in a mixed solution of N,N-dimethylformamide and ethanol and stir until dissolved to obtain a benzimidazole solution; dissolve trimesic acid in N , Stir in the mixed solution of N-dimethylformamide and ethanol until dissolved to obtain trimesic acid solution;

[0033] Cu(NO 3 ) 2 ·3H 2 The concentration of O is 2.5mg / mL~3.0mg / mL; Cu(NO 3 ) 2 ·3H 2 The mass ratio of O to nitrogen-doped reduced graphene oxide is 1:(0.1...

specific Embodiment approach 2

[0045] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the nitrogen-doped reduced graphene oxide described in step 1 is specifically prepared according to the following steps: adding graphene oxide powder into deionized water, and then Add urea and transfer to a reaction kettle, and react at a temperature of 150°C to 200°C for 3h to 8h to obtain nitrogen-doped reduced graphene oxide; the mass of the graphene oxide powder and the volume of deionized water The ratio is 1 mg:(1-5) mL; the mass ratio of the graphene oxide powder to urea is 1:(20-40). Others are the same as in the first embodiment.

specific Embodiment approach 3

[0046] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the purity of the high-purity Ar gas described in Step 4 is 99.99%. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a preparation method of a nitrogen-doped graphene loaded core-shell-shaped copper-carbon composite catalyst for producing formic acid through electro-catalysis of carbon dioxide, relates to a preparation method of a nitrogen-doped graphene loaded core-shell-shaped copper-carbon composite catalyst, and aims to solve the problems of poor product selectivity and low stabilityof the existing porous carbon supported metal catalyst. The method comprises the following steps: 1, preparing a precursor solution; 2, hydrothermal reaction; 3, cleaning and drying; 4, carbonizing the product. The preparation method is used for preparing the nitrogen-doped graphene loaded core-shell-shaped copper-carbon composite catalyst for producing formic acid through electro-catalysis of carbon dioxide.

Description

technical field [0001] The invention relates to a preparation method of a nitrogen-doped graphene-loaded core-shell copper-carbon composite catalyst. Background technique [0002] With the acceleration of human industrialization and urbanization, the demand for various fuels is increasing day by day, and the CO emitted by fuel combustion 2 The global "greenhouse effect" has been intensified, and the dual problems of energy crisis and environmental pollution have become increasingly severe. As an abundant carbon resource, CO 2 The effective use of can not only alleviate the CO in the atmospheric environment 2 Concentration, thereby reducing its greenhouse effect, but also can alleviate the increasingly scarce resource shortage crisis. Due to CO 2 The molecule is very stable and needs to be activated by adding higher energy, resulting in CO in the atmosphere 2 Less than 5.5% are effectively utilized. Therefore, looking for efficient transformation pathways and constructi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J23/72B01J35/02C25B3/04C25B11/06B01J35/00C25B3/25
CPCB01J27/24B01J23/72C25B11/04B01J35/396B01J35/40B01J35/33Y02E60/50
Inventor 冯玉杰李达田妍吴晶
Owner HARBIN INST OF TECH
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