Correlating metal poisoning with zeolite deactivation in an individual catalyst particle by chemical and phase-sensitive X-ray microscopy.

Abstract

Fluid catalytic cracking (FCC) is the main conversion process used in oil refineries. An X-ray microscopy method is used to show that metal poisoning and related structural changes in the zeolite active material lead to a non-uniform core–shell deactivation of FCC catalyst particles. The study links the detrimental effect of V and Ni poisoning with zeolite destruction and dealumination in a spatial manner within a single FCC catalyst particle.

• Authors: Javier Ruiz-Martínez, Andrew M Beale, Upakul Deka, Mathew G O'Brien, Paul D Quinn, J Fred W Mosselmans, Bert M Weckhuysen
• Journal: Angewandte Chemie (International ed. in English) (Angew Chem Int Ed Engl) Vol. 52 Issue 23 Pg. 5983-7 (Jun 03 2013) ISSN: 1521-3773 [Electronic] Germany
• PMID: 23616490 (Publication Type: Journal Article)