Enhancement of sorption processes in the zeolite H-ZSM5 by postsynthetic surface modification

Stephan J. Reitmeier, Oliver C. Gobin, Andreas Jentys, Johannes A. Lercher

Research output: Contribution to journalArticlepeer-review

93 Scopus citations

Abstract

Catching molecules: When the surface of zeolite HZSM-5 (see picture, red) is modified by amorphous SiO2 layers (gray), increased surface roughness results. The mesopores in the rough SiO2 layer funnel benzene molecules into the micropores of the zeolite, thus increasing sorption rates for benzene at the acidic hydroxy groups by a factor of two. The size of the mesopores relative to the adsorbing molecules is critical for sorption-rate enhancement. (Figure Presented).

Original languageEnglish
Pages (from-to)533-538
Number of pages6
JournalAngewandte Chemie International Edition in English
Volume48
Issue number3
DOIs
StatePublished - 5 Jan 2009

Keywords

  • Adsorption
  • Chemical vapor deposition
  • IR spectroscopy
  • Time-resolved spectroscopy
  • Zeolites

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