Abstract
The Sr or Bi modified ZrO2 catalysts were prepared by the co-precipitation method. The synthesized catalysts were characterized by X-ray diffraction, temperature programmed desorption, and N2 adsorption/desorption methods. All the synthesized catalysts were tested in the conversion of ethanol to light olefins. The results show that Sr or Bi modified ZrO2 catalysts have a remarkable effect on the surface area, crystalline phase, and acid–base properties. The total maximum yield of ethylene and propylene reaches 80.8% over Sr(1)/ZrO2. The catalytic stability over Sr(1)/ZrO2 is better than ZrO2 catalyst for the conversion of ethanol. The high catalytic selectivity of ethylene and propylene over Sr or Bi modified ZrO2 corresponds to the introduction of O vacancies. The mechanism may be related to acid and basic sites and redox reaction.
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Acknowledgements
This work is a project sponsored by the National Natural Science Foundation of China (Grant 21406269), Shandong Provincial Natural Science Foundation, China (Grant ZR2014BQ012), Scientific Research Foundation for Returned Scholars, Ministry of Education of China (K1504051C), Shandong Provincial Key Research Program (Grant 2015GSF121017), the Fundamental Research Funds for the Central Universities (15CX05013A) and the International Cooperation and Exchange Fund, China University of Petroleum (East China) (UPCGJ2017114).
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Xia, W., Mu, X., Wang, F. et al. Ethylene and propylene production from ethanol over Sr or Bi modified ZrO2 catalysts. Reac Kinet Mech Cat 122, 473–484 (2017). https://doi.org/10.1007/s11144-017-1236-5
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DOI: https://doi.org/10.1007/s11144-017-1236-5