(417a) Metal-Oxide Mediated Redox Scheme for Hydrogen Production from Reducing Fuels

A metal-oxide mediated redox scheme (chemical looping) is presented as an advanced alternative to produce Hydrogen. Previous studies have shown promising results in quantifying the thermodynamic limits of the system at atmospheric pressure, however many applications of H2 require it to be at a higher pressure. The design of a redox scheme at higher pressures provides unique challenges, each of which require careful and holistic consideration.

This presentation will initially summarize previous work on chemical looping for Hydrogen production while highlighting the motivation for the current study. The study will then detail a systematic approach for de-risking technology gaps for scale-up using appropriate experimental studies and thermodynamic simulations. The data obtained from experimental studies and thermodynamic simulations will be used to develop a reactor module design that will be further evaluated using sensitivity studies. The sensitivity studies will use accurate surrogate models constructed from experimental data and black-box optimization principles to identify trade-offs between performance and cost. The overall results will highlight the intricate balance of key operating variables and design parameters that must be achieved to maintain performance advantages of metal-oxide redox schemes at higher pressures.