Amorphous copper catalyst and preparation method and application thereof
A copper catalyst, amorphous technology, applied in the field of amorphous copper catalyst and its preparation, can solve the problems of difficult to accurately control the chemical composition of the catalyst, unsatisfactory catalyst activity and stability, uneven distribution of catalyst components, etc., to achieve Operational stability and production efficiency improvement, catalyst cost reduction, activity and stability improvement effects
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Embodiment 1
[0027] 1.5kg copper, 1.0kg aluminum and 0.5kg Mo 10 Al 90 The alloy is added to the graphite crucible, heated to melting in a high-frequency furnace, and then the molten liquid is sprayed from the nozzle of the crucible onto a copper roller with a rotation speed of 600 to 1000 rpm. Cooling water is passed through the copper roller, and the alloy The liquid is rapidly cooled at a cooling rate of 1000°C / s and then thrown out along the tangent of the copper roll to form scale-like strips, which are ground to a particle diameter of less than 70 microns to obtain a master alloy. Slowly add 50 g of the master alloy into a three-neck flask filled with 500 g of 20 wt % sodium hydroxide aqueous solution, control its temperature at 80° C. and keep stirring at constant temperature for 1 hour. After stopping heating and stirring, decant the liquid and wash with distilled water at 100°C until the pH value is 7. The prepared catalyst is numbered Catalyst-1, and the composition of Catalyst...
Embodiment 2
[0029] 1.5kg copper, 1.0kg aluminum and 0.5kg Mo 5 Al 95 The alloy is added to the graphite crucible, heated in a high-frequency furnace to melt, and then the molten liquid is sprayed from the nozzle of the crucible onto a copper roller with a rotation speed of 900 rpm. Cooling water is passed through the copper roller, and the alloy liquid is After rapid cooling at a cooling rate of 1000°C / s, it is thrown out along the tangent line of the copper roll to form scale-like strips. The scale-like strips are ground to a particle diameter of less than 70 microns to obtain a master alloy. Slowly add 50 g of the master alloy into a three-neck flask filled with 500 g of 20 wt % sodium hydroxide aqueous solution, control its temperature at 80° C. and keep stirring at constant temperature for 1 hour. After stopping heating and stirring, decant the liquid and wash with distilled water at 80°C until the pH value is 7. The prepared catalyst is numbered Catalyst-2, and the composition of C...
Embodiment 3
[0031] 1.5kg copper, 1.0kg aluminum and 0.5kg W 10 Al 90 Add the alloy into the graphite crucible, heat it in a high-frequency furnace until it melts, spray the molten liquid from the nozzle of the crucible onto a copper roller with a rotating speed of 900 rpm, and pass cooling water through the copper roller, and the alloy liquid is 10 5After rapid cooling at the cooling rate of ℃ / s, it is thrown out along the tangent line of the copper roll to form scale-like strips. The scale-like strips are ground to a particle diameter of less than 70 microns to obtain a master alloy. Slowly add 50 g of the master alloy into a three-neck flask filled with 500 g of 20 wt % sodium hydroxide aqueous solution, control its temperature at 80° C. and keep stirring at constant temperature for 1 hour. After stopping heating and stirring, decant the liquid and wash with distilled water at 80°C until the pH value is 7. The prepared catalyst is numbered Catalyst-3, and the composition of Catalyst-...
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