Modeling-aided coupling of catalysts, conditions, membranes, and reactors for efficient hydrogen production from ammonia
Kulkarni, Shekhar Rajabhau
Cerrillo, Jose Luis
Morlanes, Natalia Sanchez
Katikaneni, Sai P.
Paglieri, Stephen N.
KAUST DepartmentChemical Engineering Program
Physical Science and Engineering (PSE) Division
KAUST Catalysis Center (KCC)
Permanent link to this recordhttp://hdl.handle.net/10754/689969
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AbstractThe production of high-purity, pressurized hydrogen from ammonia decomposition in a membrane catalytic reactor is a feasible technology. However, because of the multiple coupled parameters involved in the design of this technology, there are extensive opportunities for its intensification. We investigated the coupling between the type of catalyst, process conditions, type of membrane, and reactor operation (isothermal and non-isothermal) in the catalytic decomposition of ammonia. First, we developed an agnostic dimensionless model and calculated the kinetic parameters for a set of lab-made Ru- and Co-based catalysts and the permeation parameters of a Pd-Au membrane. The non-isothermal model for the Pd-Au membrane reactor was validated with the experiments using Co-based catalysts. Finally, we analyzed the coupling conditions based on the model predictions, results obtained in the literature and our experimental results, including several case studies. The thorough analysis led us to identify optimized combinations of catalyst-conditions-membrane-reactor that yield similar or improved results compared to the ones of Ru-based catalyst in a non-membrane reactor. Our results indicate that optimizing a single factor, such as the catalyst, may not lead to the desired outcome and a more holistic approach is necessary to produce pressurized and pure hydrogen efficiently.
CitationRealpe, N., Kulkarni, S. R., Cerrillo, J. L., Morlanés, N., Lezcano, G., Katikaneni, S. P., Paglieri, S. N., Rakib, M., Solami, B., Gascon, J., & Castaño, P. (2023). Modeling-aided coupling of catalysts, conditions, membranes, and reactors for efficient hydrogen production from ammonia. Reaction Chemistry & Engineering. https://doi.org/10.1039/d2re00408a
SponsorsThe authors gratefully acknowledge the financial support provided by Saudi Aramco and the resources and facilities provided by King Abdullah University of Science and Technology (KAUST).
PublisherRoyal Society of Chemistry (RSC)
Except where otherwise noted, this item's license is described as Archived with thanks to Reaction Chemistry and Engineering under a Creative Commons license, details at: http://creativecommons.org/licenses/by-nc/3.0/