Abstract
The stability of Mo2C/carbon catalysts was assessed for the hydrodeoxygenation (HDO) of dibenzofuran (DBF) at realistic operating conditions. Catalyst stability was determined by the degree of oxidation of the Mo2C, which in turn was determined by the Mo2C properties and the reaction conditions. Decreased Mo loading resulted in smaller Mo2C particles and faster oxidation. Increased concentration of DBF and reduced H2 pressure (4.1–2.1 MPa) increased Mo2C oxidation. The dynamic oxidation of Mo2C during HDO depended on the oxidation history of the catalyst. Oxidation of the Mo2C reduced hydrogenation activity and increased selectivity to direct deoxygenation (DDO) products. DFT analysis showed that small amounts of O did not change the preferred surface adsorption geometry of DBF on Mo2C (101). H2 dissociative adsorption was not weakened either. At 350 °C and low concentration of DBF (0.2 wt.%), the 2%Mo2C/APC catalyst was stable for >10 h.
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.
