A preparation method of doping different metal ions to regulate nickel-based double metal hydroxide
A technology of hydroxide and metal ions, applied in the direction of metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of limited application, expensive, scarce elements, etc. to improve performance
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Embodiment 1
[0017] (1) Weigh 5 mmol of nickel nitrate, 0.1 mmol of magnesium nitrate and 5 mmol of 2-methylimidazole in a 20 ml polytetrafluoroethylene kettle.
[0018] (2) Add a certain amount of anhydrous methanol solution into the kettle so that the concentration of magnesium nitrate is 1.71g / L, ultrasonically or stir until completely dissolved.
[0019] (3) Place the polytetrafluoroethylene kettle in a stainless steel reaction kettle, and tighten the kettle cap.
[0020] (4) The stainless steel reaction kettle was placed in an oven and set to react at 80°C for 4 hours, the reaction was stopped, and the temperature was lowered to room temperature.
[0021] (5) Centrifuge at a speed of 10000-12000rpm in a centrifuge for 3-5min to collect the precipitate in the reaction solution, wash the precipitate repeatedly with methanol solution until the supernatant is colorless and transparent, then put the precipitate in a vacuum drying oven at 60°C for 8 hours, Finally, Ni-Mg LDHs powder was ob...
Embodiment 2
[0023] (1) Weigh 5 mmol of nickel nitrate, 0.1 mmol of manganese nitrate and 5 mmol of 2-methylimidazole in a 20 ml polytetrafluoroethylene kettle.
[0024] (2) Add a certain amount of anhydrous methanol solution into the kettle so that the concentration of manganese nitrate is 1.67g / L, sonicate or stir until completely dissolved.
[0025] (3) Place the polytetrafluoroethylene kettle in a stainless steel reaction kettle, and tighten the kettle cap.
[0026] (4) The stainless steel reaction kettle was placed in an oven and set to react at 80°C for 4 hours, the reaction was stopped, and the temperature was lowered to room temperature.
[0027] (5) Centrifuge at the speed of 8000-9000rpm in the centrifuge for 8-10min to collect the precipitate in the reaction solution, wash the precipitate repeatedly with methanol solution until the supernatant is colorless and transparent, then put the precipitate in a vacuum drying oven at 50°C for 10 hours, Finally, Ni-Mn LDHs powder was obta...
Embodiment 3
[0029] (1) Weigh 5 mmol of nickel nitrate, 0.1 mmol of zinc nitrate and 5 mmol of 2-methylimidazole in a 20 ml polytetrafluoroethylene kettle.
[0030] (2) Add a certain amount of anhydrous methanol solution into the kettle so that the concentration of zinc nitrate is 1.98g / L, sonicate or stir until completely dissolved.
[0031] (3) Place the polytetrafluoroethylene kettle in a stainless steel reaction kettle, and tighten the kettle cap.
[0032] (4) The stainless steel reaction kettle was placed in an oven and set to react at 80°C for 4 hours, the reaction was stopped, and the temperature was lowered to room temperature.
[0033] (5) Centrifuge at a speed of 10000-12000rpm in a centrifuge for 3-5min to collect the precipitate in the reaction solution, wash the precipitate repeatedly with methanol solution until the supernatant is colorless and transparent, then put the precipitate in a vacuum drying oven at 80°C for 4 hours, Finally, Ni-Zn LDHs powder was obtained.
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