Efficient carbon fiber supported catalyst and preparation method thereof

Abstract

The invention discloses an efficient carbon fiber supported catalyst and a preparation method thereof. The preparation method comprises the following steps: step 1, dissolving manganese nitrate, copper nitrate and nickel nitrate in deionized water and alcohol, and forming a precursor alcohol solution of nitrate; heating and stirring the precursor alcohol solution until viscous thick gel is formed; and drying and calcining to obtain catalyst powder, wherein the catalyst mainly comprises a mixture of manganese oxide, copper oxide and nickel oxide; step 2, carrying out ball milling on the catalyst powder, and then mixing and stirring the catalyst powder with a prepolymer, a photoinitiator and silica sol for 10-60 minutes to form a mixed dipping solution; and step 3, completely immersing carbon fibers in the mixed dipping solution, carrying out ultrasonic treatment for 0.5-2 h, and then standing for 0.5-2 h; taking out the wet carbon fibers and placing the wet carbon fibers under a high-pressure mercury lamp or a xenon lamp for irradiation until drying; and dipping and loading the carbon fibers once or for multiple times. The catalyst has the advantages of high catalyst loading rate, difficult falling of the catalyst and the like.

Description

technical field [0001] The invention belongs to the field of environmental protection, and relates to a catalyst for VOCs purification, in particular to a high-efficiency carbon fiber-supported catalyst and a preparation method thereof. Background technique [0002] Activated carbon Carbon fiber is a good adsorption material, which is made of superfine fiber such as viscose, phenolic fiber or acrylic fiber after high temperature carbonization and activation. The specific surface area of ​​conventional viscose-based activated carbon fiber is 1200-1800m 2 Between / g, the adsorption capacity is large, which is several times higher than that of activated carbon. Unlike the micropore adsorption of activated carbon, which needs to pass through the transition between mesopores and macropores, the micropores of activated carbon fibers directly lead to the outer surface, which has the advantages of fast absorption and quick release. [0003] Carbon fiber is also a good catalyst carri...

AI Technical Summary

Problems solved by technology

However, in this method, the adhesion of the catalyst on the surface of the carbon fiber is low, and the catalyst is easy to fall off during use, making the carbon fiber lose its catalytic effect.

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