Tricoordinated Single-Atom Cobalt in Zeolite Boosting Propane Dehydrogenation

Propane dehydrogenation (PDH) reaction has emerged as one of the most promising propylene production routes due to its high selectivity for propylene and good economic benefits. However, the commercial PDH processes usually rely on expensive platinum-based and poisonous chromium oxide based catalysts. The exploration of cost-effective and ecofriendly PDH catalysts with excellent catalytic activity, propylene selectivity, and stability is of great significance yet remains challenging. Here, we discovered a new active center, i.e., an unsaturated tricoordinated cobalt unit (≡Si–O)CoO(O–Mo) in a molybdenum-doped silicalite-1 zeolite, which afforded an unprecedentedly high propylene formation rate of 22.6 molC3H6…

• NN
  National Natural Science Foundation of China

  Awards: 22288101, 21920102005, 91961119, 22301057, 22109110
• NS
  Natural Science Foundation of Hebei Province

  Award: B2023201065
• HE
  Higher Education Discipline Innovation Project

  Award: B17020
• NK
  National Key Research and Development Program of China

  Award: 2022YFA1506000