Method for preparing nano-scale catalyst through ultrasonic atomization plasma reaction

Abstract

The invention discloses a method for preparing a nano-scale catalyst through ultrasonic atomization plasma reaction. The method comprises the following steps: (1) introducing an active component intoan ultrasonic atomizer, and introducing carrier gas into the ultrasonic atomizer for bubbling to bring out atomized gas containing active component precursor, so as to form aerosol; putting a catalystcarrier into a discharging gap of a plasma reactor, uniformly mixing aerosol flowing from the ultrasonic atomizer with supplemented carrier gas, enabling the mixture to continuously flow through thedischarging gap, heating gas in the plasma reactor, starting a high-voltage discharging device, continuously keeping atomization and high-voltage discharging states to reduce metal ions in active components of the aerosol into metal monomers loaded to the catalyst carrier. Compared with traditional methods, the catalyst prepared by virtue of the method has the advantages that the catalytic activity is high, the preparation cost of the catalyst is low, the preparation process is simple, and the catalyst has an extremely high industrial application value.

Description

technical field [0001] The invention relates to the technical field of designing industrial catalysts, in particular to a method for preparing nanoscale catalysts by means of ultrasonic atomization plasma reaction. Background technique [0002] In a chemical reaction, a substance that can change the chemical reaction rate (increase or decrease) of the reactants without changing the chemical balance, and whose quality and chemical properties have not changed before and after the chemical reaction is called a catalyst (a solid catalyst is also called a catalyst). According to statistics, more than 90% of industrial processes use catalysts, such as chemical, petrochemical, biochemical, and environmental protection. [0003] Catalysts loaded with active components can usually be obtained by dispersing the precursor of the active component of the catalyst on the surface of the carrier by impregnation, ion exchange, co-precipitation or deposition, followed by drying, calcining or ...

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Problems solved by technology

[0005] However, in the catalyst loaded with active components obtained by calcination or high-temperature reduction with hydrogen, the active components of the catalyst will agglomerate at high temperature

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