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Keywords:

  • carbenium ions;
  • density functional calculations;
  • methanol;
  • olefins;
  • zeolites
Thumbnail image of graphical abstract

Carbenium ions in zeolites: Two important carbenium ions have been observed for the first time under working conditions of the methanol-to-olefins (MTO) reaction over chabazite zeolites using 13C NMR spectroscopy. Their crucial roles in the MTO reaction cycles have been demonstrated by combining experiments and theoretical calculations.