Abstract
The Fischer-Tropsch synthesis was carried out at various experimental conditions on an unpoisoned and sulfur-poisoned precipitated, alkali-promoted iron-copper catalyst. The sulfur, present in the fixed catalyst bed as a longitudinal concentration gradient, had little effect on conversion or product selectivity. However, for both poisoned and unpoisoned catalysts, there was a significant change in the CO conversion to CO 2 on going from a reaction temperature of 240 to 250 °C. This suggests that there is a rapid change of our catalyst surface after 240 °C: the surface changes from one that is effective for CO 2 formation to one that is not as effective. Finally, analysis of the condensed products led us to suggest that there are at least two types of sites for hydrocarbon chain formation, each with a slightly different value of the chain growth probability.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
