551437 Selective Conversion of Syngas to Chemicals and Fuels Enabled By Bifunctional OX-Zeo Catalysts

Wednesday, June 5, 2019: 10:30 AM
Texas Ballroom A (Grand Hyatt San Antonio)
Feng Jiao, Junhao Yang, Gen Li, Na Li, Yuxiang Chen, Xiulian Pan and Xinhe Bao, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China

The key of syngas chemistry lies in controlled C-C coupling but without polymerizing into long chain hydrocarbons and without forming methane and paraffins. We recently reported that coupling of partially reducible metal oxides and zeolites (OX-ZEO) makes it possible to catalyze direct conversion of syngas toward light olefins with the selectivity reaching 80%, surpassing the limit obtained over conventional Fischer-Tropsch based catalysts.1 Such a bifunctional composite affords two types of active sites with complementary properties, turning syngas conversion into a tandem reaction, i.e. activating CO and H2, generating intermediates over the partially reduced metal oxides, and C-C coupling within the pores of zeolites. 2-5 Thus, it is important to match the two components properly in terms of the compositions, structures and intimacy to achieve an optimum catalytic activity and selectivity. With this fundamental understanding, we show that syngas can be selectively converted to a variety of chemicals and fuels with a high selectivity, including ethylene, ethane, propane, gasoline range hydrocarbons, aromatics and even oxygenates.
  1. Jiao, J. Li, X. Pan, J. Xiao, H. Li, H. Ma, M. Wei, Y. Pan, Z. Zhou, M. Li, S. Miao, J. Li, Y. Zhu, D. Xiao, T. He, J. Yang, F. Qi, Q. Fu, X. Bao. Science 351 (2016) 1065−1068.
  2. Zhu, X. Pan, F. Jiao, J. Li, J. Yang, M. Ding, Y. Han, Z. Liu, X. Bao. ACS Catal. 7 (2017) 2800−2804.
  3. P. de Jong, Science 351 (2016) 1030−1031.
  4. Jiao, X. Pan, K. Gong, Y. Chen, G. Li, X. Bao, Angew. Chem. Int. Ed.57 (2018) 4692-4696.
  5. Yang, X. Pan, F. Jiao, J. Li, X. Bao. ChemComm 53 (2017) 11146-11149.

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