The preparation of nano nickel powder by solution reduction method in stirred reactor was proposed.The effects of different operating conditions including reactant concentration

reactant ratio

initiator concentration

sodium hydroxide concentration

reaction temperature

stirring speed on the characteristic of nano nickel powder were systematically investigated to obtain the optimal operating conditions.Nano nickel powder with a face centered cubic structure and an average particle size of 107 nm was obtained under the optimal operating conditions of a NiSO4 concentration of 0.8 mol·L-1

a reactant ratio(N2H4:NiSO4) of 6:1

a initiator concentration of 0.01 mol·L-1

sodium hydroxide concentration of 1 mol·L-1

a reaction temperature of 80℃

a stirring speed of 2400 r·min-1.