(753a) Efficient Design of a Metal-Oxide Mediated Red-Ox Cycle to Produce Hydrogen from Ammonia

Ammonia (NH₃) is proposed to be an alternative H₂ carrier, due to its lower transportation costs and it is widely produced on an industrial scale using Haber-Bosch chemistry. While the use of NH₃ to overcome transportation limitations to increase market penetration of Hydrogen based technologies is attractive, there exists a technological need to convert NH₃ to H₂. Ohio State University has developed a high-efficiency iron-oxide based redox scheme to produce H₂ from NH₃ (Process name: Ammonia to Hydrogen or ATH).

This presentation will initially talk about the design principles behind of the redox scheme for ATH such that H₂ and N₂ obtained from NH₃ decomposition are intrinsically produced in two different product streams. racking. The in-situ production of pure H₂ from NH₃ offers process intensification by combining reaction and separation in a single reactor module. The study will then detail the de-risking of thermodynamic and kinetic technology gaps for scale-up using a combination of lab-scale experiments and process simulations. The data obtained from de-risking technology gaps will be used to develop a commercially relevant ATH module design. Sensitivity analysis using surrogate modeling based black-box optimization will characterize the tradeoff between performance and cost for variables including hourly space velocities, compression costs and heat recovery. Finally, a technology to market plan based on the results of sensitivity analysis will be presented to identify short-term and long-term goals for continued development of ATH technology.