In:
Greenhouse Gases: Science and Technology, Wiley, Vol. 11, No. 6 ( 2021-12), p. 1245-1264
Abstract:
Dry reforming of methane (DRM) of Ni‐based catalysts is a hot method to solve greenhouse gas problems. The improved polyol method could overcome the disadvantage of Ni agglomerate sintering by the impregnation method. In this work, Ni/CeO 2 catalysts were prepared by an improved polyol method with different CeO 2 support and applied for methane dry reforming, which showed excellent catalytic activity and stability. The X‐ray power diffraction (XRD), transmission electron microscopy (TEM), X‐ray photoelectron spectra (XPS), H 2 temperature‐programmed reduction (H 2 ‐TPR) were used to study the composition of Ni species, the Ni‐CeO 2 interaction, and Ni dispersion, while textural properties, oxygen vacancy, and the behavior of CO 2 adsorption and activity were research by N 2 adsorption and desorption, Raman and CO 2 ‐TPD. There in, Ni/CeO 2 ‐R showed excellent catalytic activity (CH 4 and CO 2 conversion: 61.8% and 96.5%; H 2 /CO radio: 0.93) and remained stable after the 50‐hr stability test. Meanwhile, the formation and graphitization of deposited carbon were observed and studied by XRD, Raman, TG/DTA, and TEM, and the cause of the deactivation of the catalyst was analyzed. This work studied and demonstrated the advantages of the improved polyol method and the differences between different CeO 2 supports and provided a new idea for the construction of the catalyst for methane dry reforming. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd.
Type of Medium:
Online Resource
ISSN:
2152-3878
,
2152-3878
Language:
English
Publisher:
Wiley
Publication Date:
2021
detail.hit.zdb_id:
2606443-1
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