Abstract
The Fe-Ni/γ-Al2O3 catalyst promoted with cerium oxide was investigated in the decomposition of methane. Using X-ray diffraction analysis (XRD) and temperature-programmed reduction analysis (TPR-H2), it was established that the introduction of cerium oxide into composition of Fe-Ni/γ-Al2O3 promotes the formation of Ni-Fe alloys, because as well as an increase in the mobility and amount of active oxygen of the Fe-Ni/Al2O3 catalyst with the introduction of cerium. The results also showed that the addition of cerium oxide to Fe-Ni/γ-Al2O3 improved the catalytic stability by increasing the carbon diffusion rate and preventing the formation of encapsulated carbon. Analysis of spent catalysts using scanning (SEM), transmission electron microscopy (TEM), and Raman spectroscopy showed that carbon in the form of graphene is formed on Fe-Ni/γ-Al2O3, the introduction of cerium oxide contributes to the dispersion of the active phases of the Fe-Ni/γ-Al2O3 catalyst, thereby creating conditions for the nucleation and growth of free carbon in the form of nanotubes.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
