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Keywords:

  • heterogeneous catalysis;
  • mesoporous materials;
  • NMR spectroscopy;
  • UV/Vis spectroscopy;
  • zeolites
Thumbnail image of graphical abstract

Observing a catalyst at work: The first 13C cross-polarization (CP)/magic-angle spinning (MAS) NMR spectroscopic evidence for the existence of surface ethoxy species on acidic zeolite Y is reported. In situ 13C CP/MAS NMR–UV/Vis spectroscopy was used to investigate the further decomposition of surface ethoxy species on zeolite H-Y (see picture) to hydrocarbons at elevated reaction temperatures.