Kinetics of the heterogeneous decomposition of nickel tetracarbonyl

The decomposition of nickel tetracarbonyl at pressures between 20 and 200 torrs was studied at temperatures from 100° to 225°C. In the cross‐flow system, the rate in the absence of appreciable dilution was primarily limited by kinetic resistances at temperatures up to about 175°C. over an effective Reynolds number range of 5 to 100. Gas phase diffusional resistances were controlling at higher temperatures. Corrections for natural convection were employed in both the kinetic and diffusional regions of control.