Abstract
For the selective removal of CO in the off-gas streams from real-life chemical processes, the interfacial interaction between the support and the active metal oxides and the role of active oxygen species are two fascinating problems. Herein, a series of CeO2-supported metal oxide catalysts were synthesized by co-precipitation method and employed for the selective removal of CO from the off-gas stream of propane oxidation process. CuO/CeO2 catalyst exhibits full CO conversion and 100% selectivity for CO removal in off-gas stream within a rather wide temperature window of 140–190 °C, being relatively stable in 200-h long-term time-on-stream experiment. Raman spectra, H2-TPR, CO-TPD and XPS spectra studies revealed that the redox properties and the concentration of active oxygen species varied with supported metal oxide compositions, for which CuO/CeO2 catalyst exhibited the highest surface oxygen vacancy concentration, good low-temperature reduction behavior and the highest adsorption capacity of CO, thus resulting in advanced CO removal performance. This study presents a strategy to design a promising CeO2-supported catalyst for oxidation removal of CO from off-gas of alkane oxidation process.
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.
