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Propane dehydrogenation (PDH),employing Pt-or Cr-based catalysts,represents an emerging industrial route for propylene production.Due to the scarcity of platinum and the toxicity of chromium,alternative PDH catalysts are being pursued.Herein,we report the construction of Zn-containing zeolite catalysts,namely Zn@S-1,for PDH reaction.Well-isolated zinc cations are successfully trapped and stabilized by the Si-OH groups in S-1 zeolites via in-situ hydrothermal synthesis.The as-prepared Zn@S-1 catalysts exhibit good dehydrogenation activity,high propylene selectivity,and regeneration capability in PDH reaction under employed conditions.The in-situ partial reduction of zinc species is observed and the par-tially reduced zinc cations are definitely identified as the active sites for PDH reaction.