A kind of preparation method of spherical cobalt trioxide powder
A technology of cobalt tetroxide powder and cobalt tetroxide, applied in cobalt oxide/cobalt hydroxide and other directions, can solve the problems of uncontrollable particle size and morphology of cobalt tetroxide, difficult to control the crystal size and agglomeration of precursor basic cobalt carbonate, and achieve excellent adsorption performance , avoid product agglomeration, enrich the effect of pore structure
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example 1
[0016] Weigh 500g of peanut shells, soak them in 1000mL of 10% hydrochloric acid for 60min, then soak them in 1000mL of 30% hydrogen peroxide for 60min, wash them repeatedly with water for 5 times, then transfer the cleaned peanut shells into an oven, Dry at a temperature of 110°C to constant weight, then pour the dried peanut shells into a pulverizer, crush them and pass through an 80-mesh sieve to obtain peanut shell powder, and transfer the obtained peanut shell powder to a carbonization furnace at a rate of 20mL / min. Feed nitrogen gas into the furnace at a high rate, and under the protection of nitrogen gas, keep carbonization at a temperature of 600°C for 90 minutes, then raise the temperature to 900°C at a rate of 10°C / min, and feed water vapor into the furnace at a rate of 0.5L / min , keep warm and activate for 80 minutes, cool to room temperature with the furnace, and discharge the material to obtain activated carbonized peanut shells; measure 300mL of cobalt chloride so...
example 2
[0018] Weigh 300g of peanut shells, soak them in 800mL of 8% hydrochloric acid for 45min, then soak them in 800mL of 30% hydrogen peroxide for 30min, wash them repeatedly with clean water for 3 times, then transfer the cleaned peanut shells into an oven, Dry at a temperature of 105°C to constant weight, then pour the dried peanut shells into a pulverizer, and pass through a 60-mesh sieve after crushing to obtain peanut shell powder, and transfer the obtained peanut shell powder to a carbonization furnace at a rate of 15mL / min. Feed nitrogen gas into the furnace at a high rate, and under nitrogen protection, keep carbonization at a temperature of 550°C for 60 minutes, then raise the temperature to 800°C at a rate of 8°C / min, and feed water vapor into the furnace at a rate of 0.3L / min , keep warm and activate for 60 minutes, cool to room temperature with the furnace, and discharge the material to obtain activated carbonized peanut shells; measure 200mL of cobalt chloride solution...
example 3
[0020]Weigh 400g of peanut shells, soak them in 900mL of 9% hydrochloric acid for 50min, then soak them in 900mL of 30% hydrogen peroxide for 40min, wash them repeatedly with water for 4 times, then transfer the cleaned peanut shells into an oven, Dry at a temperature of 107°C to constant weight, then pour the dried peanut shells into a pulverizer, pass through a 70-mesh sieve after crushing, to obtain peanut shell powder, and transfer the obtained peanut shell powder to a carbonization furnace, at a rate of 17mL / min Nitrogen gas was introduced into the furnace at a high rate, and under nitrogen protection, the temperature was kept at 570 °C for 70 minutes, and then the temperature was raised to 850 °C at a rate of 9 °C / min, and water vapor was introduced into the furnace at a rate of 0.4 L / min. , keep warm and activate for 70 minutes, cool to room temperature with the furnace, and discharge the material to obtain activated carbonized peanut shells; measure 250mL of cobalt chlo...
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