Preparation method of dendrite-shaped nickel oxalate
A technology of crystalline nickel oxalate, which is applied in the field of preparation of dendritic nickel oxalate, can solve the problems of high cost of nitric acid medium, unclear reaction mechanism, inability to prepare nickel oxalate with different shapes, etc., and achieve crystal morphology. The effect of good control and simple process
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Embodiment 1
[0025] A preparation method of dendritic nickel oxalate, comprising the following processing steps:
[0026] Configure a nickel chloride solution with a nickel content of 120g / l for use; continuously add ammonia water to the nickel chloride solution until the pH value of the solution is 8.5; control the temperature of the solution at 70°C, and continuously add the oxalic acid solution dropwise under stirring until the above The nickel content in the clear liquid is ≤0.5g / L, the solution after the reaction is filtered, the precipitate is washed, and the precipitate is dried to obtain a dendritic nickel oxalate product.
Embodiment 2
[0028] A preparation method of dendritic nickel oxalate, comprising the following processing steps:
[0029] Configure a nickel chloride solution with a nickel content of 150g / l for use; continuously add ammonia water to the nickel chloride solution until the pH value of the solution is 9.0; control the temperature of the solution at 65°C, and continuously add the oxalic acid solution dropwise under stirring until the above The nickel content in the clear liquid is ≤0.5g / L, the solution after the reaction is filtered, the precipitate is washed, and the precipitate is dried to obtain a dendritic nickel oxalate product.
Embodiment 3
[0031] A preparation method of dendritic nickel oxalate, comprising the following processing steps:
[0032] Configure a nickel chloride solution with a nickel content of 180g / l for use; continuously add ammonia water to the nickel chloride solution until the pH value of the solution is 8.0; control the temperature of the solution at 60°C, and continuously add the oxalic acid solution dropwise under stirring until the above The nickel content in the clear liquid is ≤0.5g / L, the solution after the reaction is filtered, the precipitate is washed, and the precipitate is dried to obtain a dendritic nickel oxalate product.
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