X‐ray Fluorescence Tomography of Aged Fluid‐Catalytic‐Cracking Catalyst Particles Reveals Insight into Metal Deposition Processes
Abstract: Microprobe X‐ray fluorescence tomography was used to investigate metal poison deposition in individual, intact and industrially deactivated fluid catalytic cracking (FCC) particles at two differing catalytic life‐stages. 3 D multi‐element imaging, at submicron resolution was achieved by using a large‐array Maia fluorescence detector. Our results show that Fe, Ni and Ca have significant concentration at the exterior of the FCC catalyst particle and are highly co‐localized. As concentrations increase as a function of catalytic life‐stage, the deposition profiles of Fe, Ni, and Ca do not change significantly. V has been shown to penetrate deeper into the particle with increasing catalytic age. Although it has been previously suggested that V is responsible for damaging the zeolite components of FCC particles, no spatial correlation was found for V and La, which was used as a marker for the embedded zeolite domains. This suggests that although V is known to be detrimental to zeolites in FCC particles, a preferential interaction does not exist between the two.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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X‐ray Fluorescence Tomography of Aged Fluid‐Catalytic‐Cracking Catalyst Particles Reveals Insight into Metal Deposition Processes ; volume:7 ; number:22 ; year:2015 ; pages:3674-3682 ; extent:9
ChemCatChem ; 7, Heft 22 (2015), 3674-3682 (gesamt 9)
- Creator
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Kalirai, Sam
Boesenberg, Ulrike
Falkenberg, Gerald
Meirer, Florian
Weckhuysen, Bert M.
- DOI
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10.1002/cctc.201500710
- URN
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urn:nbn:de:101:1-2022122307041175637790
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:32 AM CEST
Data provider
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Kalirai, Sam
- Boesenberg, Ulrike
- Falkenberg, Gerald
- Meirer, Florian
- Weckhuysen, Bert M.
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