Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/4676
Title: Visualization of the equilibrium FCC catalyst surface by AFM and SEM-EDS
Authors: Bayraktar, Oğuz
Kugler, Edwin L.
Keywords: Fluid catalytic cracking
Metal contamination
AFM
SEM-EDS
Atomic force microscopy
Catalyst deactivation
Scanning electron microscopy
Issue Date: Sep-2003
Publisher: Kluwer Academic Publishers
Source: Bayraktar, O., and Kugler, E. L. (2003). Visualization of the equilibrium FCC catalyst surface by AFM and SEM-EDS. Catalysis Letters, 90(3-4), 155-160. doi:10.1023/B:CATL.0000004110.98820.d9
Abstract: The deposition of metal contaminants (e.g., Ni, V, and Fe) from the hydrocarbon feed causes the deactivation of fluid catalytic cracking (FCC) catalyst used in petroleum refining. It is very important to understand the changes in the morphology and chemical composition on the catalyst surface and how these structural and chemical changes affect the catalyst performance. In this research, metal-contaminated FCC catalysts from a commercial unit have been characterized using AFM together with SEM-EDS. The AFM images showed the surface pores as well as the features that surround the pore's entrance on the catalyst surface. Catalyst surface contains debris that appear as bright spots in AFM images. SEM-EDS results have shown the presence of iron in these bright spots. Fe enrichment at the catalyst particle surface was also confirmed by XPS analyses.
URI: http://doi.org/10.1023/B:CATL.0000004110.98820.d9
http://hdl.handle.net/11147/4676
ISSN: 1011-372X
1011-372X
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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