Carbon aerogel catalyst synthesized based on microwave action as well as synthesis method and application of carbon aerogel catalyst

Abstract

The invention discloses a carbon aerogel catalyst synthesized based on microwave action as well as a synthesis method and application thereof, wherein the preparation method of the catalyst comprises the steps: taking resorcinol and formaldehyde as reaction raw materials, taking water as a solvent, adding the reaction raw materials into water, adjusting the pH value to 5-7, placing the reaction liquid system in a microwave radiation environment, and reacting; and after the reaction is finished, drying, transferring the obtained solid into a tubular furnace, and roasting in a nitrogen atmosphere to obtain the carbon aerogel catalyst product. A microwave synthesis method is used for replacing a normal-temperature stirring method to prepare the carbon aerogel catalyst, the method has the advantages that operation is easy, synthesis is rapid, and the influence of selectivity of hydrogen peroxide preparation through electrocatalytic oxygen reduction of the carbon aerogel catalyst is explored by controlling the time for synthesizing the carbon aerogel catalyst through microwaves; and the catalyst provided by the invention has good hydrophobic and electro-catalytic effects, and has a good application prospect in a reaction for catalytically preparing hydrogen peroxide.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a carbon airgel catalyst synthesized under the action of microwaves, a synthesis method and application thereof. Background technique [0002] Hydrogen peroxide (hydrogen peroxide) is an important chemical substance, which is widely used in fields such as industry, medicine, environmental protection, military industry, food and environment. It is both oxidizing and reducing and has no secondary pollution after use, which is defined as a green chemical product. At present, the most mature method for industrial large-scale production of hydrogen peroxide is the anthraquinone method, but the anthraquinone method is not only cumbersome, but also uses some organic solvents, causing secondary pollution to the environment. Therefore, we are looking for a green and efficient method to produce hydrogen peroxide. imminent. [0003] In the electrochemical oxygen r...

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Problems solved by technology

In recent years, the normal pressure drying method, which has been studied more hotly, is to repeatedly soak the wet gel in a solvent with a low surface tension coefficient, and replace the water in the wet gel with a low surface tension solvent. This process is not only time-consuming, but also Solvents that are tens or even hundreds of times the volume of the gel need to be used. These organic solvents, such as ethanol, acetone and other organic solvents, are volatile, toxic and difficult to recycle, causing great pollution to the environment.

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