Studies of Zeolite Single-Crystals: Ethene Oligomerization in HZSM-5

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Large (150 micron) crystals of HZSM-5 have been shown by electron microscopy, micro - XPS and selective dissolution experiments to be highly zoned, with an aluminium rich exterior and an aluminium deficient interior. The oligomerization of ethene in the crystals has been studied by C-13, NMR, FTIR microscopy and Raman microscopy. At low temperatures a largely linear oligomer is formed; above 200 degrees C chain branching occurs at channel intersections. Raman microspectroscopy can distinguish between oligomer in the interior and that near the outer surface of the crystals.

Original languageEnglish
Pages (from-to)187-194
Number of pages8
JournalStudies in Surface Science and Catalysis
Publication statusPublished - 1994


  • H-ZSM-5
  • spectroscopy
  • conversion
  • propene
  • adsorption
  • ethylene


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