Ethylene epoxidation catalyzed by chlorine-promoted silver oxide

Date

2011-10-12

Author

Ozbek, M. O.
Önal, Işık
Van Santen, R. A.

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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.

Subject Keywords

Adsorbed Species Present, Ethene Epoxidation, Oxidation, Oxygen, Surface, Mechanism, Ag(110), Oxametallacycles, Selectivity, Transition

URI

https://hdl.handle.net/11511/31488

Journal

JOURNAL OF PHYSICS-CONDENSED MATTER

DOI

https://doi.org/10.1088/0953-8984/23/40/404202

Collections

Graduate School of Natural and Applied Sciences, Article

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Ethylene Epoxidation Catalyzed by Silver Oxide Ozbek, M. Olus; Önal, Işık; van Santen, Rutger A. (2011-01-01) There are two different reaction paths towards formation of ethylene oxide (EO); in addition to that via an oxometallacycle (OMC) intermediate, silver oxide‐catalyzed epoxidation of ethylene with surface oxygen, which can occur on an oxide phase as long as no oxygen vacancies are present, is possible. This path is established computationally, by using density functional theory.
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Citation Formats

M. O. Ozbek, I. Önal, and R. A. Van Santen, “Ethylene epoxidation catalyzed by chlorine-promoted silver oxide,” JOURNAL OF PHYSICS-CONDENSED MATTER, pp. 0–0, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31488.