... cm3Theoretic Density 6.72g/cm3 Applications:1. Catalyst: Nano NiO is a good catalyst in the process of decomposition, synthesis, transformation ... hydrogenation cracking, hydrocarbon conversion, heavy oil hydrogenation. NiO is a catalyst to remove CH4, N2, cyanide, helping to dissolve NOx. ... As a light catalyst to degrade acid red, the function of NiO are obviously ...