Journal
CATALYSIS COMMUNICATIONS
Volume 162, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.catcom.2021.106387
Keywords
Rb; Fe3O4 microsphere; CO2 hydrogenation; Light olefins
Categories
Funding
- National Natural Science Foundation of P. R. China [91334206, 22078006, U20B2022]
- Bingtuan Science and Technology Program [2018BC008, 2021DB006]
- CNOOC
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Rb-promoted Fe3O4 microsphere catalysts were developed to enhance the selectivity and olefin/paraffin ratio in CO2 hydrogenation to light olefins.
Alkali metals have been widely studied to improve the efficiency of CO2 hydrogenation to light olefins on iron-based catalysts. Herein, a series of Rb-promoted Fe3O4 microsphere catalysts were developed to understand the effects of Rb promoter on the catalytic performance. The 3wt%Rb/Fe3O4 catalyst showed high selectivity of light olefins (C-2-C-4 , 47.4%) with a high olefin/paraffin ratio (10.7). XRD, H-2-TPR, CO2-TPD, XPS analyses show that the proper Rb loading rate may adjust carbonaceous species content and ferric oxide content on the surface of the catalyst which is help for the synergistic effect to produce light olefins.
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