Site items in: Content by Author Christopher Cadigan

High Flow Ammonia Cracking between 400-600°C
Presentation

Traditional ammonia cracking is achieved at 850-950 °C in the presence of a nickel catalyst. The reaction is highly endothermic, and maintaining these high temperatures at high flow rates of ammonia gas can be difficult. Here, we present work using our advanced ammonia synthesis catalyst in an ammonia cracking setup. We use a metallic monolith catalyst support to minimize pressure drop at high flow rates. Full NH3 cracking occurs at 600 °C, with the onset of cracking at 400 °C. An output flame can be achieved with a fully tunable ratio of hydrogen to ammonia, depending on the temperature setpoint…

Advanced Catalysts Development for Small, Distributed, Clean Haber-Bosch Reactors
Presentation

The traditional Haber-Bosch (HB) synthesis of anhydrous ammonia will adapt to clean power by sourcing the hydrogen from renewable electrolysis. However, the very large scale of current HB plant designs are not well-matched to smaller and more distributed clean power resources. Plant/reactor designs need to be made at a smaller scale in order to best utilize clean hydrogen. Small, megawatt scale HB reactors have an additional advantage of being better able ramp up and down with variable renewable power. This talk will detail ARPA-e funded work into the design and optimization of these smaller, clean NH3 reactors, which utilize much…