publication . Doctoral thesis . 2007

Reaction Mechanism and Deactivation Pathways in Zeolite catalyzed Isobutane/2-Butene Alkylation

Feller, Andreas;
Open Access English
  • Published: 13 Jun 2007
  • Publisher: Technical University of Munich
  • Country: Germany
Abstract
In this thesis, the isobutane/2-butene alkylation was studied on lanthanum-exchanged zeolite X in a CSTR-type slurry reactor. Catalysts with a high concentration of strong Brønsted acid sites and a high Brønsted to Lewis acid site ratio exhibited higher active catalytic lifetimes than samples with lower ratios. Isobutane self-alkylation activity was also increasing with increasing Brønsted/Lewis ratio. The integral productivity of the catalysts was found to be independent of the butene space velocity. The catalysts deactivated by the buildup of highly unsaturated polymers, which strongly adsorbed on the acid sites and blocked them for further reactions. With inc...
Subjects
free text keywords: Zeolites;Isobutane/Butene Alkylation;Mechanism;Deactivation;Acid Sites, Zeolithe;Isobutan/Buten Alkylierung;Mechanismus;Deaktivierung;Säurezentren, Chemie, ddc:540
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Doctoral thesis . 2007
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