Development of a Ba-CoCe catalyst for the efficient and stable decomposition of ammonia
AuthorsMorlanes, Natalia Sanchez
Katikaneni, Sai P.
KAUST DepartmentKAUST Catalysis Center (KCC)
Physical Science and Engineering (PSE) Division
KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
Chemical Engineering Program
Permanent link to this recordhttp://hdl.handle.net/10754/669331
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AbstractBarium-promoted cobalt-cerium catalysts prepared by coprecipitation are efficient and stable at decomposing ammonia. Catalysts with the optimal composition show very similar activity and better stability than benchmark solids containing Ru. Characterization studies reveal that cerium plays a key role as a structural promoter, increasing cobalt dispersion and preventing sintering. These features translate into a very active and stable catalyst. Kinetic analysis shows a decrease in the apparent activation energy upon Ba promotion and a decrease in the negative hydrogen reaction order, highlighting the role of the alkaline earth metal in alleviating the negative effect of hydrogen and reducing the hydrogenation properties of cobalt, which results in further improvement of the catalytic activity.
CitationMorlanés, N., Sayas, S., Shterk, G., Katikaneni, S. P., Harale, A., Solami, B., & Gascon, J. (2021). Development of a Ba–CoCe catalyst for the efficient and stable decomposition of ammonia. Catalysis Science & Technology, 11(9), 3014–3024. doi:10.1039/d0cy02336a
SponsorsThe authors gratefully acknowledge the financial support provided by Saudi Aramco and the resources and facilities provided by the King Abdullah University of Science and Technology.
PublisherRoyal Society of Chemistry (RSC)
JournalCatalysis Science and Technology
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