The mechanism of metal poisoning by cyclic deactivation in fluid cracking catalysts

F. Hernández, R. De García León, E. Mógica, J. C. Moreno, R. González, E. Garcíafigueroa

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

A commercial REUSY fluid cracking catalyst was subjected to a cyclic deactivation (CD) procedure in a fluid cracking pilot plant using a metal-spiked VGO feed. The properties of the catalyst were compared to those of equilibrium catalysts obtained from an industrial FCC unit and a sample metallated by a CPS deactivation method. The catalysts were characterized by surface area measurements, scanning electron microscopy, electron dispersive spectrometry and microactivity test. Metals distributions on catalyst particles and aging rates were found to be the main differences between catalysts treated at the two different scales. Oxidation of metals has negative effects upon coking and hydrogen production relative to those produced in the reduced state.

Original languageEnglish
Pages (from-to)455-462
Number of pages8
JournalStudies in Surface Science and Catalysis
Volume111
DOIs
StatePublished - 1997
Externally publishedYes

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