Abstract
A thorough catalytic combustion toward diluted ethylene oxide (EO) is demonstrated. The Pt active phase and CeO2 support were selected to introduce a synergistic effect. As a result, a superior catalytic activity and less severe coking trend were observed on the Pt/CeO2 catalyst when compared with another widely-used Pt/Al2O3 catalyst. The XPS spectra and H2-TPR profiles evidenced that the Pt/CeO2 catalyst has both stronger metal-support interaction and more abundant oxygen vacancies, which is believed at the heart of its excellent performance. Finally, the degradation pathways of EO were explored by in-situ DRIFTS. The weak H2O affinity of Pt/CeO2 catalyst can inhibit the polycondensation reaction and result in the favorable degradation of EO. In contrast, abundant hydroxyl species were present on the hydrophilic Pt/Al2O3 catalyst surface, which may serve as acid sites and complicate the EO degradation, and therefore various side products and carbon deposits would appear in this case.
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.
