Ethylene epoxidation catalyzed by chlorine-promoted silver oxide
JOURNAL OF PHYSICS-CONDENSED MATTER, vol.23, no.40, 2011 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 23 Issue: 40
- Publication Date: 2011
- Doi Number: 10.1088/0953-8984/23/40/404202
- Journal Name: JOURNAL OF PHYSICS-CONDENSED MATTER
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Middle East Technical University Affiliated: Yes
Abstract
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.