Abstract:
The deactivation for the commercial hydrogenation catalyst Co-Mo/Al2O3 was investigated in this research. The sample was collected from real reaction of catalyst used at temperature ranged from 280-400℃ under pressure of 0.2-0.5 bar for the life time of 1 year in Tail gas of claus process units. The fresh and spent catalysts were analyzed by XRF, BET, SEM, XPS, XRD and RAMAN SPECTROSCOPY. Then, the characteristics of the fresh and spent catalysts were identified. Found that the deactivation of the catalyst species are coking and sintering of active metal becoming compound is CoMoO4. Appropriate for the reaction of the catalyst Co-Mo/Al2O3 is the temperature range 330-340℃. It can be treated H2S gas by Claus Process up to 98.5 to 99 percent.