Synthesis and characterization of mesoporous ZSM-5 core-shell particles for improved catalytic properties

Marina Kustova, Martin Spangsberg Holm, Claus H. Christensen, Y.-H. Pan, P. Beato, T. V. W. Janssens, F. Joensen, Jesper Nerlov

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

HZSM-5 is a unique catalyst for the conversion of methanol, dimethyl ether and other oxygenates into gasoline. During this process, catalyst deactivation by coking requires frequent regeneration and the improvement of catalyst life time is one of the challenges in catalyst development. In this study, a series of mesoporous samples consisting of a ZSM-5 core and a silicalite shell have been synthesized and characterized by XRD, N(2)-sorption, IR spectroscopy and electron microscopy techniques. Additionally, desilicated conventional and mesoporous ZSM-5-type samples were investigated. All samples were tested in the MTG reaction, and the results showed that both the shell-coated and the desilicated zeolites are significantly more resistant to coke formation. These results are ascribed to the effect of the removal of structural defects rather than to an improvement of the diffusion properties due to the formation of mesopores.
Original languageEnglish
Title of host publicationZeolites and related materials: Trends, targets and challenges : Proceedings of the 4th International FEZA Conference
Publication date2008
Pages117-122
ISBN (Print)978-0-444-53297-8
DOIs
Publication statusPublished - 2008
Event4th Conference of the Federation of European Zeolite Associations - University of Pierra Marie Curie, Paris, France
Duration: 2 Sep 20086 Sep 2008
Conference number: 4
http://www.congres.upmc.fr/feza2008/

Conference

Conference4th Conference of the Federation of European Zeolite Associations
Number4
LocationUniversity of Pierra Marie Curie
CountryFrance
CityParis
Period02/09/200806/09/2008
Internet address
SeriesStudies in Surface Science and Catalysis
NumberPart A
Volume174
ISSN0167-2991

Keywords

  • Zeolite
  • HZSM-5
  • Mesopores
  • Core-shell materials
  • MTG process

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