Catalyst for producing furoic acid through electro-catalytic oxidation of furfural and preparation method and use method of catalyst

Abstract

The invention belongs to the technical field of biomass conversion, and discloses a catalyst for producing furoic acid through electro-catalysis furfural oxidation and a preparation method and a use method of the catalyst. The catalyst takes carbon cloth as a substrate, and rhenium-doped cobalt hydroxide nanosheets grow on the substrate in situ. The preparation method comprises the following steps: cutting commercial carbon cloth, pickling and drying for later use; the preparation method comprises the following steps: uniformly stirring perrhenate, cobalt salt, an acid solution, urea and an alcohol solution together, transferring the mixed solution into a hydrothermal kettle, and transferring the mixed solution into the hydrothermal kettle; and putting the carbon cloth into a hydrothermal kettle, screwing a kettle cover, reacting the hydrothermal kettle at 80-260 DEG C for 400-1200 minutes, cooling to room temperature, taking out the carbon cloth, and drying to obtain the catalyst. An H-type electrolytic tank is adopted, a catalyst, silver chloride and a carbon rod serve as a working electrode, a reference electrode and a counter electrode respectively, the voltage range is set to be 0.6-1.0 V, and the time is 30-240 min. The catalyst prepared by the invention shows excellent activity of electro-catalysis of furfural oxidation.

Description

technical field [0001] The invention belongs to the technical field of biomass conversion, and in particular relates to a catalyst for electrocatalyzing furfural oxidation to produce furoic acid, a preparation method and a use method thereof. Background technique [0002] The rapid consumption of fossil fuels forces humans to continuously explore new ways to obtain clean and renewable energy. Biomass conversion has become an effective way to solve the energy crisis, which is of great significance to human development. Biomass is rich in sources, easy to obtain, low in cost and renewable, for example, it can be extracted from waste crops (corncobs, oats and wheat bran, etc.). The production of furfural is a continuous industrial process, and it is of great practical value to explore the use of furfural as a platform to replace the by-products of fossil resources. As a kind of biomass, furfural itself contains oxygen, which is the most feasible for the production of oxygenat...

AI Technical Summary

Problems solved by technology

At present, most of the catalysts used in the furfural oxidation reaction are catalysts containing noble metals (such as Pt, Pd, Au and Ru or their alloys, etc.), which not only increases the production cost, but also greatly reduces the practical application.

And as a non-noble metal base (such as silica, alumina-supported MnO 2 or Mn 2 o 3 , Sn(VO 3 ) 4 , Ni(OH) 2 and V 2 o 5 etc.), there are disadvantages such as low furfural conversion rate, low product selectivity, poor stability, etc., and the cost of catalytic oxidation is high, the process is complicated, and the practical application is severely limited

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