Abstract
Ag/mesoporous-assembled SrTiO3 catalysts with different loaded second metals (Au, Ba, Pd, Sn, and Cu) were tested for catalytic activity toward ethylene oxide formation from the epoxidation reaction of ethylene, in comparison to Ag- and Au-loaded on the SrTiO3 supports. To promote long-term stability, Sn was added to the optimum bimetallic catalyst. The catalysts were analytically characterized by Brunauer–Emmett–Teller (BET) surface area, X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), temperature programmed desorption (TPD), and X-ray photoelectron spectroscopy (XPS) analyses. The addition of a second metal of Au, Ba, or Cu significantly improved the catalytic performance for ethylene epoxidation, whereas the Pd and Sn did not. The Cu–Ag bimetallic catalyst exhibited the highest catalytic ethylene oxide production activity. An addition of Sn to this catalyst greatly promoted the long-term stability toward the ethylene epoxidation.
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.
