Abstract
Abstract Kinetic studies on the oxidative coupling of methane over Sm2O3 have been carried out. The experimental rate equation observed could be well explained in terms of the reaction mechanism proposed. The reaction is initiated by abstracting hydrogen atom from the methane adsorbed by the diatomic oxygen on the surface. The coupling of two CH3· radicals leads to C2H6. Deep oxidation of CH3· produces CO and CO2. The large activation energy (149 kJ mol−1) needed for the formation of CH3· explains the sharp increase in the selectivity to C2-compounds (C2H6 + C2H4) as raising temperatures. The oxygen species responsible for initiating the reaction was suggested to be O22− or O2− on the surface.
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.
