Chemical Research in Chinese Universities ›› 2023, Vol. 39 ›› Issue (6): 1064-1069.doi: 10.1007/s40242-023-3131-0

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Promoting Effect of ZnO on the Catalytic Performance of CoZSM-5 for CO2-Assisted Dehydrogenation of Ethane

HE Huan, ZOU Zhengxi, HUA Weiming, YUE Yinghong, and GAO Zi   

  1. Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433, P.R. China
  • Received:2023-05-26 Online:2023-12-01 Published:2023-11-18
  • Contact: YUE Yinghong E-mail:yhyue@fudan.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (No.22072027) and the Fund of the Science & Technology Commission of Shanghai Municipality, China(No.19DZ2270100).

Abstract: Aseries of ZnO-modified cobaltous ion exchanged ZSM-5 catalysts is prepared using incipient wetness impregnation and characterized by X-ray diffraction (XRD), N2 adsorption, transmission electron microscopy (TEM), UV-Vis diffuse reflectance spectroscopy (DR UV-Vis), X-ray photoelectron spectroscopy (XPS), pyridine-adsorbed Fourier transform infrared (Py-IR) and Raman. Their catalytic performance towards CO2-assisted dehydrogenation of ethane to ethylene has been evaluated. The addition of ZnO onto CoZSM-5 obviously improved the yield of ethylene as well as the conversion of CO2. The promoting effect is attributed to the good activity of ZnO for the reverse water gas shift (RWGS) reaction, which enhances the coupling between RWGS and ethane dehydrogenation.

Key words: Ethane dehydrogenation, CO2 utilization, ZnO, CoZSM-5, Coupling