Highly Selective Conversion of Carbon Dioxide to Lower Olefins

Conversion of CO2 to value-added chemicals has been a long-standing objective, and direct hydrogenation of CO2 to lower olefins is highly desirable but still challenging. Herein, we report a selective conversion of CO2 to lower olefins through CO2 hydrogenation over a ZnZrO/SAPO tandem catalyst fabricated with a ZnO-ZrO2 solid solution and a Zn-modified SAPO-34 zeolite, which can achieve a selectivity for lower olefins as high as 80–90% among hydrocarbon products. This is realized on the basis of the dual functions of the tandem catalyst: hydrogenation of CO2 on the ZnO-ZrO2 solid solution and lower olefins production on the SAPO zeolite. The thermodynamic and kinetic coupling between the tandem reactions…

• NN
  National Natural Science Foundation of China

  Award: 21703240
• CA
  Chinese Academy of Sciences

  Award: XDB17020200
• CP
  China Postdoctoral Science Foundation

  Awards: 2015M580233, 2016T90231
• DI
  Dalian Institute of Chemical Physics