Example 1: The decomposition of hydrazine over a packed bed of alumina-supported iridium catalyst is of interest . In a proposed study, a 2% hydrazine in 98% helium mixture is to be passed over a...

Extracted text: Example 1: The decomposition of hydrazine over a packed bed of alumina-supported iridium catalyst is of interest . In a proposed study, a 2% hydrazine in 98% helium mixture is to be passed over a packed bed of cylindrical particles 0.25 cm in diameter and 0.5 cm in length at a gas-phase velocity of 15 m/s and a temperature of 750 K. The kinematic viscosity of helium at this temperature is 4.5 104 m² /s. The hydrazine decomposition reaction is believed to be externally mass transfer–limited under these conditions. If the packed bed is 0.05 m in length, what conversion can be expected? Assume isothermal operation. Additional information 0.69 × 10-4 m²/s at 298 K EER DAB Bed porosity: 30%