Core–shell catalyst pellets for effective reaction heat management

creativework.keywordsCarbon dioxide methanation, Core–shell catalyst pellets, Fluidized-bed coating, Mass transport limitation, X-ray computed tomography
creativework.publisherElsevier B.V.en
dc.contributor.authorZimmermann R.T.
dc.contributor.authorWeber S.
dc.contributor.authorBremer J.
dc.contributor.authorIdakiev V.
dc.contributor.authorPashminehazar R.
dc.contributor.authorSheppard T.L.
dc.contributor.authorMörl L.
dc.contributor.authorSundmacher K.
dc.date.accessioned2024-09-02T14:58:15Z
dc.date.accessioned2024-09-02T15:15:26Z
dc.date.available2024-09-02T14:58:15Z
dc.date.available2024-09-02T15:15:26Z
dc.date.issued2023-02-01
dc.description.abstractCatalyst research is concerned with synthesizing increasingly active materials, leading to safety issues at reactor scale, unless the reaction heat release is controllable. Computational studies predict that core–shell pellets with catalytically active core and inert shell are beneficial for this purpose, compared to established concepts such as catalyst pellet dilution. At high temperatures, reactant diffusion through the shell becomes rate-determining, resulting in a well-controllable heat release rate, which prevents further temperature increase. Here, industrial catalyst pellets were coated in a fluidized-bed pilot plant, demonstrating large-scale production feasibility. The obtained pellets were characterized via Dynamic Image Analysis, Scanning Electron Microscopy and X-ray Computed Tomography. Conducted CO2 methanation experiments confirm the predicted trends, if the applied shell is fully closed. Furthermore, mathematical and experimental studies demonstrate, that the inert shell shifts selectivity. Based on this work, safer and yet economical reactor operation is anticipated also for other reaction systems.
dc.identifier.doi10.1016/j.cej.2022.140921
dc.identifier.issn1385-8947
dc.identifier.scopusSCOPUS_ID:85146016097en
dc.identifier.urihttps://rlib.uctm.edu/handle/123456789/1457
dc.language.isoen
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85146016097&origin=inward
dc.titleCore–shell catalyst pellets for effective reaction heat management
dc.typeArticle
oaire.citation.volume457
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