What is the effect of ammonia in raw gas on shift catalysts?
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What is the effect of ammonia in raw gas on shift catalysts? Switching to a cobalt-molybdenum catalyst – if the catalyst becomes deactivated, I want to know why that happens.
I haven’t heard of any effects; there are many reasons for inactivation, such as peroxide formation, degradation due to moisture absorption, loss of components, and the occurrence of side reactions
Ammonia should have little effect on the catalyst itself, as is the case both from the perspective of catalyst manufacturers and in practical use. However, ammonia affects the stable operation of the entire conversion system, and problems with ammonium carbonate crystals can occur in locations such as instrument pressure conduits.