Reaction Kinetics and Catalysis Letters, Vol.74, No.1, 143-149, 2001
Sulfur poisoning of iron ammonia catalyst probed by potassium desorption
The surface of an unpoisoned and sulfur-poisoned industrial iron ammonia catalysts is investigated by K, K+ thermal desorption. The K+ desorption energy increases while the K energy decreases upon poisoning. Presence of sulfur also suppresses the potassium desorption in electronically excited states.