Abstract
In this paper, low temperature CO oxidation over iron–cobalt mixed oxide nanocatalysts with molar ratio of Co/Fe=1/1 was investigated. The nanocatalysts were prepared with a facile co-precipitation method. The prepared catalysts were characterized by X-ray diffraction (XRD), temperature programmed reduction (TPR), temperature programmed desorption of oxygen (O2-TPD), N2 adsorption/desorption and transmission electron microscopy (TEM) techniques. The BET results revealed that the samples showed a mesoporous structure and the TEM analysis showed a nanostructure for all samples with crystallite sizes smaller than 30nm. The results revealed that inexpensive iron–cobalt mixed metal oxide nanoparticles have a high potential as catalyst in low temperature CO oxidation. The results also showed that increasing in calcination temperature increased the crystallite and particle size and decreased the specific surface area, which caused a decrease in catalytic activity of prepared catalysts. O2-TPD showed that the suprafacial mechanism is dominant in CO oxidation over Fe–Co catalyst. In addition, catalyst pretreated under oxidative atmosphere (O2-pretreat) showed the higher activity than those pretreated under reductive (H2-pretreat) and inert atmospheres (He-pretreat) and showed no obvious deactivation with repetition used in the reaction atmosphere.
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.
