Ethylene epoxidation catalyzed by chlorine-promoted silver oxide

Ozbek M. O., ÖNAL I., Van Santen R. A.

JOURNAL OF PHYSICS-CONDENSED MATTER, vol.23, no.40, 2011 (SCI-Expanded) identifier identifier


It is demonstrated that, on a silver oxide surface, direct formation of ethylene oxide (EO) through the reaction between gas phase ethylene and surface oxygen is possible. The direct reaction channel produces EO selectively without competing with acetaldehyde (AA) formation. The oxometallacycle (OMC) forms on an oxygen vacant surface and reduces EO selectivity. Cl adsorption removes these surface vacant sites and hence prevents the formation of the OMC intermediate.