Experimental and statistical optimization of the hydrogen reduction process of nickel oxide

Reduction of nickel oxide (NiO) by hydrogen gas is an affordable and simple way in comparison with the other chemical methods to produce and retrieve the pure nickel powder. Properties of the reduced Ni powder are dependent on many parameters such as the temperature, holding time, and hydrogen gas flow. The main reported mechanism of hydrogen reduction contains the decomposition of the oxide into gas-state phases and then condensation of the...